Jbl L300 Summit [Archive] - Lansing Heritage Forums

mm54

04-30-2009, 03:48 PM

I have find 2 JBL L300 SUMMIT 75 i must wait for pickup in 2 or 3 weeks
if someone has documents, informations on product or transformation, upgrade or link on JBL L300 SUMMIT I'm interested thank you

Find on the net (by Dan):
JBL has made some incredible speakers in their history, and there is no doubt that the Paragon and the Hartsfield are two of their greatest achievements, and few also would argue that the 4345 has the slight edge on the L300 Summit for audiophile sound quality. But for many reasons the JBL L300 Summit is an icon of not just the JBL product line, but the audio industry altogether. It is something akin to the 1957 Chevy in capturing the essence of an era. In the 1950’s and 1960’s, if you dreamed about a car, it likely was an early model Corvette or the 1957 Chevy Bel Air (probably the convertible!). In the 1970’s, if you dreamed about a set of speakers, it was this pair of JBL L300 Summits. The L300 Summit represents an era of historic greatness, when products that were “Made in America” meant that it was the most innovative design, the best quality materials and components, the absolute best construction and attention to detail, and the best performance possible. In 1975 JBL was at its zenith in terms of Quality Control, Engineering and Design Innovation, and these L300 Summits were State of the Art. Impeccably styled, superb cabinet construction, and absolutely phenomenal driver quality created what was then the astronomically priced statement speaker at $3,000 a pair in 1975 – 33 years ago!

These speakers sound fabulous – no other way to describe it. The combination of finesse and delicacy coupled with the amazing muscle of the 15” JBL 136A woofer create a sound that is just indescribable. The combination of the 136A woofer, the LE85 midrange horn and the incredibly delicious 077 crystal slot tweeter were the culmination of more than 20 years of JBL research and design, and to say that they have withstood the test of time and are still relevant today is a huge understatement. The reason that the demand for these premium speakers is so high is that the drivers out-perform almost everything being made today. This speaker will blow you away with its carefully blended combination of graceful and intimate detail and raw, chest pounding power - it is the quintessential 3-way speaker system.

Technical Details

These Summits were built between 1975-1982 which were arguably JBL’s most innovative and prolific period. These were designed by Greg Timbers, who worked at JBL for over 35 years and is one of the worlds most respected speaker designers.

This is an extremely pure and clean design – a 3-way speaker with extremely high-end components include a massive 15" 136A woofer with 4 inch edge wound voice coil and an optimized alnico motor structure for ultra low distortion. The authoritative bass performance of this classic woofer still rivals the best modern designs. The LE85 midrange features a 1.75 diameter edge wound aluminum voice coil and an alnico motor structure. It fires through a cast aluminum exponential horn and wide dispersion lens assembly. The 077 tweeter features a very efficient ring radiator design with an aluminum diaphragm which has been shown to be one of the most effective ways to achieve flat, extended frequency response beyond 20 kHz. The design of the high frequency driver matches the directivity of midrange horn beautifully which leads to a near-perfect transition between them.

The performance specs are readily available from JBL or the JBL Heritage site. Basic info:

Size = 31.5” x 23” x 23.5”
Unpacked Weight = 145 lbs apiece

hjames

04-30-2009, 05:27 PM

Look, just freakin' Google IT (http://lmgtfy.com/?q=JBL+L300)!!

besides, this is the Mother Lode of JBL Info -
that stuff is already here, loaded in "The Library"
Look at the Black bar 1/4 of the way down the page - where it says

USER CP - FAQ - Library ...

Yeah, click LIBRARY
then click JBL Library
Then click SPECS
Then click Home Speakers ...

Its real easy - they keep using pictures of L300s as typical speakers!

Halfway down that page is a scanned in brochure of the 1975 L300

http://www.lansingheritage.org/html/jbl/specs/home-speakers/1975-l300.htm

Go fer it!

There is all kinds of other info here - just use the site SEARCH and type in L300 Zingo - the words will come!

Welcome to the site, and good luck on your new vintage speakers!

I have find 2 JBL L300 SUMMIT 75 i must wait for pickup in 2 or 3 weeks
if someone has documents, informations on product or transformation, upgrade or link on JBL L300 SUMMIT I'm interested thank you

Much redundant specs deleted by Heather ...

BMWCCA

04-30-2009, 05:48 PM

I also pointed you toward the JBL technical sheets on the two (L300/L300A) versions here: http://audioheritage.org/vbulletin/showpost.php?p=249644&postcount=9

brutal

05-01-2009, 09:37 AM

Gotta love, "The performance specs are readily available from JBL or the JBL Heritage site."

You found your way here, I bet you can find your way to the docs you seek.

It's nice to be able to come here and tell people to STFA (Search the Forum/F** Archives) since we're not allowed to do that over on AK where the same OP made the same post. There must be 10 "Where can I buy lamps for xxx receiver?" posts in the same forum there every week.

LOL.

mm54

05-02-2009, 05:37 AM

thank you hjames (http://www.audioheritage.org/vbulletin/member.php?u=3090) & BMWCCA (http://www.audioheritage.org/vbulletin/member.php?u=3653) i appréciate your help
i have also make a post on ak to have informations on JBL L300SUMMIT
and have a idea less "targeted" JBL and I have no more informations ..
I had to make a choice quickly and decided to buy the L300 summit I'm very happy to have done
have you an idea of the price for the JBL L300SUMMIT in USA
in europe it is EUR3000,-- if the speakers are in good cosmetic condition and operating
thank you brutal (http://www.audioheritage.org/vbulletin/member.php?u=7171) I thought I could get other information that is available outside the sites and links usual ..
again thank you all for your help

BMWCCA

05-02-2009, 11:42 AM

have you an idea of the price for the JBL L300SUMMIT in USA
in europe it is EUR3000,-- if the speakers are in good cosmetic condition and operatingI'd have to say excellent pairs are generally being offered with asking prices around $3,600 USD. About a month ago a pretty nice pair from an original owner's son went for $2,300 on Ebay after 16 bids. Another pretty nice pair in need of new grille cloth went days ago for $3,495 also on Ebay. So actual price on any given day is just a guess.

mm54

05-02-2009, 11:00 PM

I'd have to say excellent pairs are generally being offered with asking prices around $3,600 USD
yes i agree, more difficult to find in France and near ..
the problem for me is the shipping cost for France, very deterrent! without which he must make a serious packing in wooden boxes and that it takes time and money ...
In many cases, sellers do not wish to do the work of packing and shipping, he preferred pickup directly on site by the buyer, which is understandable, it is a big job ...
do you know a company in USA that could get the speakers at the vendor pack speaker in wooden boxes then ship to the address of the buyer

mm54

05-02-2009, 11:36 PM

If I remember correctly, the vintage JBLs with the names on the "foilcal" (that's what JBL calls the metal-foil label where the crossover L-pad knobs usually are) are the earlier versions. In most cases the system is the same. I believe I remember the names got dropped about the same time JBL changed plant locations.

I'm sure someone here will correct me if I'm wrong. ;)

The differences in the two versions of the L300 Summit/L300A can be seen here:
http://manuals.harman.com/JBL/HOM/Technical%20Sheet/L300%20Summit%20ts.pdf
http://manuals.harman.com/JBL/HOM/Technical%20Sheet/L300A%20Summit%20ts.pdf
thank's again for your help,

on some forum in France it seems that the owners make L300 SUMMIT "UPGRADES" or changes the filters and/or other components ...
is there a technique doc to determine whether these changes were advocated by JBL or technicians trying to improve ..

mm54

05-04-2009, 09:02 AM

it is the same N333 SHEMATIC i have reade only this diffrences:
LOW FREQUENCE DRIVER :
136A (L300)
136H (L300A)
and if not serviceable replace with : 2235H

SYSTEM SPECIFICATIONS:
Max Rec. Amp Power :
300 Watts (L300)
400 Watts (L300A)

SHIPPING Weight :
145lbs _ 66KG (L300)
152lbs _ 69KG (L300A)

ADDITIONAL PARTS CURRENTLY AVAILABLE/
Binding Posts:
Red : 10243 5L300) / 56131 (L300A)
Black: 10244 5L300) / 56130 (L300A)

mm54

05-07-2009, 12:55 AM

Both the Klipsch and L300 have large soundstages, but I wouldn't say that either images that precisely. "Summit" was the name assigned to the L300 model number. Early L300's have no mention of the model name on the speaker while later versions had the foilcal labeled "L300 Summit". As best I can tell, there is no difference between these systems. There was an L300A introduced in 1979 that replaced the Alnico 136A bass driver with the ferrite 136H bass driver. Both drivers used identical moving parts and both magnets had identical energy so that there sould be very little sonic difference, if any. The only real way to tell which bass driver is in the system you are considering is to take it out of the cabinet. The 136A has a magnet that is fully enclosed in a deep, small diameter pot. The 136H has an exposed magnet that has a larger diameter and is shallower to look more like a pancake.
thank you Don McRitchie

mm54

05-13-2009, 11:46 PM

what type of cable to connect the JBL L300 SUMMIT to my BOSE1801 amp
are there any recommandations

MikeBrewster77

05-14-2009, 08:09 AM

what type of cable to connect the JBL L300 SUMMIT to my BOSE1801 amp

are there any recommandations

You're definitely gonig to want this:

http://www.roger-russell.com/wire/wire10.jpg

Seriously though, assuming the hook ups at the back of the Bose are standard (I know some of their products have proprietary connections) then equal lengths per channel of high quality wire of an appropriate thickness relative to the length you are running should do the job. My experience with wire is in line with AWG specifications (which I understand is not the European standard) but the chart below gives appropriate diameters vs. run, and hopefully should help:

0.82 mm2 / 6m maximum
1.30 mm2 / 9m maximum
2.10 mm2 / 15m maximum
3.30 mm2 / 24m maximum

Best,
- Mike

mm54

05-15-2009, 06:19 AM

You're definitely gonig to want this:

http://www.roger-russell.com/wire/wire10.jpg

Hi Mike,
thank you,

I think this kilimanjaro is well named, the price is proportional to the height of the summit ! I am sure that quality is top!

the price is higher than the price of my JBL L300 SUMMIT,
I am looking for something more affordable you now
what do you think of
Ked Xtube400 5 m €459,-- http://www.qed.co.uk/168/gb/product/speaker_cables/x-tube_400.htm
Ked revelation http://www.qed.co.uk/184/gb/product/speaker_cables/revelation.htm
harmonictechhttp://www.harmonictech.com/products/speaker/pro11-plus.html or http://www.harmonictech.com/products/speaker/fantasy-speaker.html
anticables http://www.anticables.com/home.html
Van Den Hull http://www.vandenhul.com/p_C11.aspx
Kimber 8TC http://www.kimber.com/Products/LoudSpeakerCables/8TC/8TC.aspx
Audiophile HighEnd Speaker http://cgi.ebay.ca/ws/eBayISAPI.dll?ViewItem&Item=110214497598 (http://cgi.ebay.ca/ws/eBayISAPI.dll?ViewItem&Item=110214497598)

all in the ~same price but no informations on earch, the last (Audiophile) say:
"The cables have been bench tested against Chord, Wireworld, Nordost, Kimber and DNM with outstanding results" but we cant prouve ...

other link if you have
brgs
michel

MikeBrewster77

05-15-2009, 09:49 AM

Hi Mike,
thank you,

I think this kilimanjaro is well named, the price is proportional to the height of the summit ! I am sure that quality is top!

;) Indeed, and spending that kind of coin on a few meters of cable could likely be attributed to a lack of oxygen to the brain one might associate with that elevation...

In all honesty, my earlier reference was intended as a joke. IMHO, there is no need to purchase cables that are of higher quality than the wiring in your components or your loudspeakers (and perhaps even your house.) So for my purposes, I've always used and been very happy with Monster Cable interconnects and speaker wire, and have found them to be a solution in line with the wiring throughout my system.

Best,
- Mike

mm54

05-15-2009, 10:34 AM

;) Indeed, and spending that kind of coin on a few meters of cable could likely be attributed to a lack of oxygen to the brain one might associate with that elevation...
:) !!

yes Monster cable (http://www.monstercable.com/productdisplay.asp?pin=19) is also a good way ..
once of my friend how have the same JBL L300 SUMMIT say
"On this speaker, according to the amp, the best cable

is one who gives the bottom of the spectrum more articulated.
After Monster Cable, Audioquest, Isoda, phone and other I returned
to 1.5mm mono strand square semi rigid as standard.
Over time it resists boredom"

brgs
michel

mm54

05-15-2009, 06:50 PM

i have find this on audioXpress (http://www.audioxpress.com/magsdirx/backissues/BISAXM.htm) September 2001

Audio News
"Build an Automotive Sub-Satellite Speaker System"
"The AC Power Line and Audio Equipment, Pt. 1"
"A Single-Ended 6550 Amplifier"
"How Good is Your Port?"
"The Ultra Fidelity Computer Sound System, Pt. 1"
"Phase Inverting by Transformers"
"JBL L300 Summit Renovation"
Product Review, Tannoy S8LR with Listening Critique
Product Review, Blaupunkt Munchen RDM 169 Car Audio Head Unit with Listening Critique
Product Review, Monarchy SM-70 Pro Power Amplifier
Product Review, The Sovtek 12ax7 LPS Twin Triode
Xpress Mail
Driver Report, The Jordan JX92S
New Chips on the Block
Book Review, GEC Audio Tube Data, 2nd Edition
"E-V Model A15", Glass Shard
Yard Sale
Vintage Glass, "Sylvania Audio Amp"

for this article "JBL L300 Summit Renovation" ?
if someone has it or a copy, .pdf ..
I would be very happy to receive
brgs
michel

mm54

05-17-2009, 08:20 AM

hehe

28 dollars, 1 email and 3 posts later. Well at least I get the pictures.

http://www.oaklodgeconsulting.co.uk/Articles/NewJBL.pdf

:D thank you warpig , is it the same on audioXpress (http://www.audioxpress.com/magsdirx/backissues/BISAXM.htm) September 2001!

Technical manual L300SUMMIT (http://manuals.harman.com/JBL/HOM/Technical%20Sheet/L300%20Summit%20ts.pdf)

if someone has a .pdf copy of the JBL L300SUMMIT manual user guide .

mm54

05-19-2009, 09:48 AM

thank you warpig , is it the same on audioXpress (http://www.audioxpress.com/magsdirx/backissues/BISAXM.htm) September 2001!

this is the AudioXpress reply :
Dear Michel,

You may purchase the September 2001 issue of AudioXpress for $7.00 plus
shipping. A copy of only the article may be purchased for $5.00 plus
shipping. We do not sell the single issues or article reprints in a pdf
format. The entire year of 2001 is available on CD in a pdf format for
$29.95 plus s/h.

The CD is available via our website but the individual issues or article
are not. They may be ordered by phone (888-824-9465 in USA/Canada or
603-924-9464) Monday-Thursday from 8am-4:15pm. You may also fax orders
to 603-924-9467 or send by postal mail to:
Audio Amateur Inc
PO Box 876
Peterborough NH 03458-0876

We accept Visa, Mastercard, American Express and Discover. Checks are
accepted in the US but for orders to Canada and overseas we accept
International Money Orders that are payable in US dollars and payable on
a US bank.

Please let me know if I may be of further assistance.
Best Regards,
Sharon LeClair <[email protected]>
Customer Service

mm54

05-23-2009, 05:23 AM

here i pickup the JBL L300SUMMIT 1976
39435

near my JBL L300SUMMIT 1976 the K2 S5500 are going to feel alone now!
39434

BMWCCA

05-23-2009, 05:56 AM

What happened to the pretty pictures? :applaud:

For those of us not fortunate enough to have seen, much less heard, the S5500-K2, how do your two systems compare? :dont-know

mm54

05-23-2009, 10:29 AM

What happened to the pretty pictures? :applaud:

For those of us not fortunate enough to have seen, much less heard, the S5500-K2, how do your two systems compare? :dont-know

just problem with display ..actualy ok ?

K2 are the clearest to hear more separation but appears less homogeneous than L300SUMMIT,
requires a fairly powerful amp in case a KRELL of 2X600Watts
I do not know more, I did heard that 5 minutes ...
rush to take my L300 and go!
anyway, I do not like them aesthetically

speakerdave

05-23-2009, 11:45 AM

. . . . anyway, I do not like them aesthetically

Yeah, they are a kind of techno-industrial moderne, and I agree with you. One reason, I think for the S9800 and S9900 improvements in visual aspect.

Nice Summits. I listened to a similar speaker, the 4333a for a good while and always enjoyed it. The remaining item to fill in your JBL collection may be a large format 4-way of the 43xx series (4344 or 4344MkII probably the best option).

mm54

05-23-2009, 12:16 PM

Nice Summits..
thank you speakerdave (http://www.audioheritage.org/vbulletin/member.php?u=155) i prefer L300 SUMMIT of other 43xx

speakerdave

05-23-2009, 12:22 PM

thank you speakerdave (http://www.audioheritage.org/vbulletin/member.php?u=155) i prefer L300 SUMMIT of other 43xx

Visually nice, and sonically, they do have their points.

mm54

05-23-2009, 12:25 PM

Visually nice, and sonically, they do have their points.

certainly not perfect, it is impossible ! but the emotional side ..

Doc Mark

05-24-2009, 07:10 AM

Good Morning, mm54,

Like you, I do love my JBL L300's!! Yours look very nice, and it's great that you enjoy them to the point that you do, especially when you already have a "more modern" JBL with which to compare the L300's! Also, like you, I do not find some of the more modern JBLs to be asthetically pleasing, whilst I dearly LOVE the look and feel of the L300's. But, each to his/her own, right? Some folks prefer a more modern look, some of us prefer a warm walnut cabinet and TOTL vintage look. What are the small boxes on which you have perched your Summits, if I may ask? I've been planning to raise ours up a bit, too, and after seeing yours setup that way, will definitely get to it. Thanks for the inspiration, and have fun with your wonderful JBL L300 Summits!! Take care, and God Bless!

Every Good Wish,
Doc

BMWCCA

05-24-2009, 08:35 AM

What are the small boxes on which you have perched your Summits, if I may ask? I've been planning to raise ours up a bit, too, and after seeing yours setup that way, will definitely get to it. Looks to me like the attached plinth is taller than original, too. What do you L300 owners think? Cute little boxes look like a nice shipping containers or presentation cases for some quality object. Whatever it takes to get the 077 up to ear level. ;)

midlife

05-24-2009, 08:47 AM

Would tilting the cabinets back give the tweeters higher projection paths?

Doc Mark

05-24-2009, 10:25 AM

Looks to me like the attached plinth is taller than original, too. What do you L300 owners think? Cute little boxes look like a nice shipping containers or presentation cases for some quality object. Whatever it takes to get the 077 up to ear level. ;)

Hey, BMWCCA,

Yep, I noticed that taller plinth, too. Looks nice. Regis had some new plinths made, of solid wood, for our L300's, and we like it. But, I am definitely going to raise the cabinets up on something higher, too. I don't want to use congrete blocks, as that reminds me too much of my "home-made furniture" during my college days! ;):bouncy: But, I do like the idea of using some 4x4's, or even something larger, to make a nice solid foundation on which to perch the L300's. I totally agree that the 077's need to be a bit higher, and the mid's, too. In your "new" 4-ways, how high does the 077 reside from the floor? Take care, and God Bless!

Every Good Wish,
Doc

BMWCCA

05-24-2009, 09:44 PM

In your "new" 4-ways, how high does the 077 reside from the floor?About 37-1/2" to the UHF center. On the L7s it's 42" not including the base, and that one is on the tilted part of the baffle, too! Seems like the built-in tilt of the L300 should give it an advantage, as midlife touched on, but when I was discussing my apprehension for bringing something so huge into my home, the previous owner of the 4345s reminded me that many L300 and 4333 owners elevated their systems anyway and the 4345's height made that unnecessary. To my ears, when I'm sitting on the couch, he was right! Just enjoyed the movie "Iron Man" with my youngest tonight and it was very cool over the big speakers. Made that "big" 27" CRT TV seem much too small! ;)

mm54

05-24-2009, 11:01 PM

support is made presentation boxes of product to celebrate an occasion, there is a box Alboreto and the other I do not remember more.
The previous owner had these boxes for me to listen the L300 before I buy them.
if you look at the photo, there are marble supports in the K2 (earch in 2 parts 20cm), which was previously under the L300 but in vertical positition therefore very high .. I guess that's the sound that he preferred to hear
actually my L300 support is above 3.5" instead of 2" it is what was asked when replacing it

I can not give an impression, I just have and I can not make comparisons, but you can test yourself, then tell us what you think
on this (http://listeninn.com/catalog/popup_image.php/pID/496), the tweeter is very hight!

i have not tested my L300 with my BOSE1801+4401,

when I connect my turntable Luxman PD277 (coil MC) on the preamp BOSE4401 on IN switch to 1 or 2 for hight or low position
there is a steady background noise every second
if I connect to my Accuphase amp on MC phono1 it works properly
I think there is a problem on the preamp BOSE4401?
i have no CD and cant make other tests, i think take Plinius Cd ?
is it possible he does not accept MC entry ?
it seems yes on the manual but it is a copy and I can not properly read
the part that corresponds to the connection of a phono1 or 2

if impossible can i use outside adaptator...
since MC to IN adaptator and OUT adaptator to IN PREAMP PHONO1

Hofmannhp (http://www.audioheritage.org/vbulletin/member.php?u=483) say the output of a Mooving Coil phono cartridge doesn't fir to the 4401.
therefore you need a Preamp with an MC input.
I suppose it is Preamp Phono like Clearaudio
(http://www.clearaudio.de/eng/navi_pv.html)

mm54

05-25-2009, 11:32 PM

for the probleme with BOSE4401 go to this tread (http://www.audioheritage.org/vbulletin/showthread.php?t=24669)

mm54

05-28-2009, 06:41 AM

In 1975 JBL was at its zenith in terms of Quality Control, Engineering and Design Innovation, and these L300 Summits were State of the Art. Impeccably styled, superb cabinet construction, and absolutely phenomenal driver quality created what was then the astronomically priced statement speaker at $3,000 a pair in 1975 – 33 years ago!

Does someone has an idea of the equivalence of $ 3000 in 1975 on 2009?

MikeBrewster77

05-28-2009, 08:07 AM

Does someone has an idea of the equivalence of $ 3000 in 1975 on 2009?

Almost impossible to believe but according to an inflation calculator hosted by a government agency here in the States it's a whopping $11,890.71!!!:eek:

Best,
- Mike

BMWCCA

05-28-2009, 08:32 AM

Almost impossible to believe . . .Why?
38 years ago I was paying $3,300 per year for tuition-only to Washington University in St. Louis. Four years ago that same tuition-only cost was $33,000 per year when my oldest was there. Thirty-three-years ago a Twinkie cost 12¢. Today a worse product using the same name is about $1.25. A Tootsie-Roll pop cost 2¢ then, 25¢ today. The motorcycle I rode to college back then used gasoline that cost 22¢/gallon in St. Louis. Today that gas cut with corn and with less octane is $2.30/gallon.

Every time I walk into our local Crutchfield store I see Thiel speakers with one tweeter, one mid-range, a 10" woofer with a 5-lb. magnet, and a passive radiator—with a retail price on a pair of over $13,000. You can't tell me a brand-new L300 updated with today's technology wouldn't sell if it was offered for less than those Thiels?

;)

MikeBrewster77

05-28-2009, 08:48 AM

Thirty-three-years ago a Twinkie cost 12¢.

I'm really beginning to believe that you have a thing for Twinkies ;)

You can't tell me a brand-new L300 updated with today's technology wouldn't sell if it was offered for less than those Thiels?

Do they offer lay-away? 'Cause then I might be interested (provided the styling was updated a bit as well :p)

Best,
- Mike

BMWCCA

05-28-2009, 08:57 AM

I'm really beginning to believe that you have a thing for Twinkies So few name-brand items are still around in nearly the same form that it makes for a good inflation metric.

Comfort food as a kid. Sno Balls, too. I never really liked the chocolate cupcakes and Ho-Ho's didn't come out until I was a teen. Twinkies went well with reefer, I'm told, if you didn't happen to have any brownies around when the craving hit. I may even have spent some time combining listening to JBLs and eating Twinkies back then. The Twinkies are just not the same today. My JBLs are!

;)

mm54

05-28-2009, 09:23 AM

according to an inflation calculator hosted by a government agency here in the States
Hi Mike, it is possible to have the link ..

Fred Sanford

05-28-2009, 09:50 AM

So few name-brand items are still around in nearly the same form that it makes for a good inflation metric.

Comfort food as a kid. Sno Balls, too. I never really liked the chocolate cupcakes and Ho-Ho's didn't come out until I was a teen. Twinkies went well with reefer, I'm told, if you didn't happen to have any brownies around when the craving hit. I may even have spent some time combining listening to JBLs and eating Twinkies back then. The Twinkies are just not the same today. My JBLs are!

;)

Twinkies were too plain for me.

je

BMWCCA

05-28-2009, 10:13 AM

Twinkies were too plain for me.

I"m willing to bet those don't fry as well! :applaud:

MikeBrewster77

05-28-2009, 10:21 AM

Hi Mike, it is possible to have the link ..

Sure!

http://data.bls.gov/cgi-bin/cpicalc.pl

Best,
- Mike

MikeBrewster77

05-28-2009, 10:24 AM

Twinkies were too plain for me.

I've never even seen a choco-dile before! Apparently, there's a whole wonderful world of artery-clogging, comfort-inducing junk food to which I was never exposed.

I'm calling my mom tonight and giving her hell for depriving me as a child! ;)

hjames

05-28-2009, 10:48 AM

I"m willing to bet those don't fry as well! :applaud:

Nonsense, once you dip them in egg batter, most anything will fry!

How do you think they fry a snickers bar?

http://www.ehow.com/how_2090831_deep-fry-snickers.html

"The concept of deep-frying candy bars originated in fish and chips shops in Scotland"

(yeah, figures its something the Scotts did first !)

But this one reads better ... whew!!

http://www.flakmag.com/misc/deepfried.html

mm54

05-28-2009, 10:56 AM

http://data.bls.gov/cgi-bin/cpicalc.pl

thank you Mike! dammage that we cant have also the change $/Frs or $/€ or other money for the same thing and with select date years!

it would be interesting to have the price of most products used to make a comparison

mm54

05-28-2009, 10:58 AM

is there any way to have the original plan of L300 SUMMIT cabinet + electronic

I think try to build a new pair of L300
if possible with existing components.
it would require the electronic part that I can rely on an existing product JBL can have great sound in a cabinet-type L300

mm54

06-10-2009, 05:13 AM

what is the difference:
LOW FREQUENCE
136A (Alnico) L300
136H (Ferrite) L300A
is 2235H (http://www.jblpro.com/pages/components/2235h.htm) better than this ?

MIDRANGE:
What can be changed on the LE85 to be better
what is the difference on H92Horn and Lens and 2425J (http://www.jblpro.com/pub/obsolete/2425hj.pdf)

HIGH:
what is the change on 077 and 2405H (http://www.jblpro.com/pub/obsolete/2405.pdf)

SHIPPING Weight :
145lbs _ 66KG (L300)
152lbs _ 69KG (L300A)
Why the L300A are the heaviest ?

Fangio

06-10-2009, 06:05 AM

what is the difference:
LOW FREQUENCE
136A (Alnico) L300
136H (Ferrite) L300A
...
SHIPPING Weight :
145lbs _ 66KG (L300)
152lbs _ 69KG (L300A)
Why the L300A are the heaviest ?

Compare the weight of the magnet assemblies (pro equivalents but basically the same baskets):

http://www.lansingheritage.org/html/jbl/specs/pro-comp/2231.htm
http://www.lansingheritage.org/html/jbl/specs/pro-comp/2235.htm

richluvsound

06-10-2009, 06:14 AM

I really like the Summit with the 2235 in it. I wouldn't change anything else.
It would not be a summit if you changed anything else IMHO.

They could stand being raised off the floor 150 mm .

I'd be proud to own a pair.

Rich

BMWCCA

06-10-2009, 06:21 AM

is 2235H better than this ?I have no experience other than to tell you the 2235 is often mentioned on this site as an improvement for the L300/4333 systems. I believe there are several here who have made the swap and can better tell you what to expect.

Is your system now up and running? I must have missed your impressions of your new L300s. Are you looking for or were you expecting more LF output than you're getting now?

Personally, I have the 18" 2245H woofers so I consider myself spoiled! ;)

richluvsound

06-10-2009, 11:32 AM

Hi BMWCA

just wait and give them 6 months. Its amazing how something that big can be so delicate. I have both sitting here at the moment to A/B. I had never gotten to hear a 2235 before:p "IT AINT A POOR MANS 2245" imho. It has everything you could ever want for a home application 15". Nice bloody speakers you have there old bean ! BTW

Rich

Doc Mark

06-10-2009, 12:13 PM

Greetings, All,

Our L300's have 2235H's in them, and we love that woofer, very much! It's offers tight, highly detailed bass, and a warm sweet sound that is very natural to our ears. When I say "our" ears, I mean Sweet Bride and myself. We both feel the same about the L300's with the 2235H woofers. I have another pair of 2235H's, which are installed in the 4333 cabinets that Grumpy sent my way. I've not yet done the work necessary to be able to use those boxes, but hope to do so, "one of these days".... LOVE the 2235H woofer, though, and I think any L300 system could benefit from using it. For what it's worth.... Take care, and God Bless!

Every Good Wish,
Doc

mm54

06-10-2009, 02:41 PM

Is your system now up and running? I must have missed your impressions of your new L300s. Are you looking for or were you expecting more LF output than you're getting now?

Personally, I have the 18" 2245H woofers so I consider myself spoiled! ;)

Hi BMWCCA
the 2245 (http://www.lansingheritage.org/html/jbl/specs/pro-comp/2245.htm)seems to be impressive if you look at the specifications, are there changes in the homogeneity of origin L300 ?
What is the price of this 2245 and is it difficult to find, if i must change in a few years, i think i can take it ...it is not a priority actualy

LF is verry good for me !! listen to my vinyl on my Accuphase and L300, I had the impression of rediscovering the music with a real pleasure and I was very surprised at the sound!

not tested with my BOSE1801 actualy in stand by..

mm54

06-10-2009, 02:51 PM

Compare the weight of the magnet assemblies (pro equivalents but basically the same baskets):

LOW FREQUENCES
JBL 2231 (http://www.lansingheritage.org/html/jbl/specs/pro-comp/2231.htm)
JBL 2235 (http://www.lansingheritage.org/html/jbl/specs/pro-comp/2235.htm)

thank you Fangio!
you have an idea about the difference between the two woofer (except weight)
136A (Alnico) L300
136H (Ferrite) L300A
i have not find a link ..

BMWCCA

06-10-2009, 02:51 PM

Its amazing how something that big can be so delicate. Exactly. Their performance at low volume is truly amazing. I balked at first figuring something that big would suck up the power. The owner patiently explained to me that with the same effortl the eighteen with the same motor pushes nearly twice the air of the fifteen. The sacrifice in real-estate is minimal. Robert called the 2245 the "velvet hammer" and bi-amping keeps them damped nicely.

mm54: Sorry to take you off topic. The 2245 is an 18" woofer. I don't think you want to go that road with your iconic L300s, even if it would fit! If you're interested, you might want to look for a pair of 4345s, talk with Rich about his, or work out a nice DIY as many have here.

mm54

06-10-2009, 03:01 PM

What is the pro components of this :

MIDRANGE:
LE85 ?

HIGH:
077 is the 2405H (http://www.lansingheritage.org/html/jbl/specs/pro-comp/2405.htm)? what is the H on 2405 ?

mm54

06-10-2009, 03:11 PM

mm54: Sorry to take you off topic. The 2245 is an 18" woofer. I don't think you want to go that road with your iconic L300s, even if it would fit! If you're interested, you might want to look for a pair of 4345s, talk with Rich about his, or work out a nice DIY as many have here.
no probleme .. I thought you had 2245 on L300 ! well I was wrong

all components of my L300 are from just a few upgraded capacitors and output connectors HP (pictures in few days if i can)

What is the price of 2235H (http://www.jblpro.com/pages/components/2235h.htm)and is it difficult to find ?
Michel

mm54

06-10-2009, 03:21 PM

Hi rich

what do you make changes to improve the sound quality of the already very good L300?

hjames

06-10-2009, 03:31 PM

What is the pro components of this :

MIDRANGE:
LE85 ?

HIGH:
077 is the 2405H (http://www.lansingheritage.org/html/jbl/specs/pro-comp/2405.htm)? what is the H on 2405 ?

Get familiar with this site ...

http://www.jblpro.com/pages/obsolete.htm

Also this part of the Lansing Forum - the Library
http://www.lansingheritage.org/html/jbl/specs/pro-comp/pro-comp.htm

You can look up all of your Pro drivers here, get their specs and such...

2405 = 077 - see
http://www.lansingheritage.org/html/jbl/specs/pro-comp/2405.htm

2420 is LE85 driver
(also 2425 - new ones)
see - http://www.lansingheritage.org/html/jbl/specs/pro-comp/2420.htm

2312 is Long horn (as used in L300 and 4333)
2307 is short horn (as used in L200s and such)

oh, and the 2235s??

http://www.lansingheritage.org/html/jbl/specs/pro-comp/2235.htm

mm54

06-10-2009, 03:38 PM

hjames (http://www.audioheritage.org/vbulletin/member.php?u=3090) thank you

Michel

BMWCCA

06-10-2009, 04:29 PM

This is one of my favorite and more useful Pro links when it comes to what goes in which of the Studio Monitor series, but it's often kind of hard to find amid all the others: http://www.jblproservice.com/pdf/Systems%20Reference%20Charts/Studio%20Monitor%20Series.pdf

Fangio

06-10-2009, 06:30 PM

you have an idea about the difference between the two woofer (except weight)
136A (Alnico) L300
136H (Ferrite) L300A
i have not find a link ..
Me neither, never seen a direct link to a data sheet for one of them. AFAIK the magnet assembly is the only difference.

Anyway, next level would be the different magnet ingredients. :)

Note that discussions about alnico vs. ferrite, and their impact on sound can get very passionate here... :duel:
Facts to start with:

http://audioheritage.org/vbulletin/showpost.php?p=37039&postcount=1 (http://audioheritage.org/vbulletin/showthread.php?t=4031)

and the designer on the subject:

http://audioheritage.org/vbulletin/showpost.php?p=110522&postcount=29

BMWCCA

06-10-2009, 07:37 PM

and the designer on the subject:
http://audioheritage.org/vbulletin/showpost.php?p=110522&postcount=29Great link! Got to love an engineer with a sense of humor about his work! :D
The old decade woofers (116A and 127A) only had to see an amplifier in the room and they got really nervous.

richluvsound

06-11-2009, 01:01 AM

Hi rich

what do you make changes to improve the sound quality of the already very good L300?

Hi mm54,

I looked at all the small things that could be done ie. New insulation, binding post, Fillet all internal joints with a structural adhesive, new gaskets on all components, etc. If they were mine I would remove the old networks service and clean , then pack them away safe and build CC networks - charge coupled. The 2235 is quite easy to find if your not worried about using original 2235 baskets. Jbl-recone kits are still made and there are a few jbl baskets that can be made into 2235 while still maintaining original factory spec.

I use forum member "Guido" for all my re-coning and all things electrical. We're good friends also. However, that friendship was built on mutual respect and trust.
There are people, closer and cheaper,but I have no desire to penny pinch
on any aspect of a speaker project.

The summit was the first JBL I ever heard - but at 18, unless I was going to live a life of crime, I would have to wait a good few years to own a pair. . In my opinion, they sound brilliant and look stunning.

How about some pics of said specimen ?

BTW . WELCOME !

Rich

mm54

06-11-2009, 03:04 AM

These Summits were built between 1975-1982 which were arguably JBL’s most innovative and prolific period. These were designed by Greg Timbers, who worked at JBL for over 35 years and is one of the worlds most respected speaker designers.

Ferrite magnets do not demagnitize

is gtimbers the same person ? whaoo

I admire and am impressed
MOULT RESPECT !

mm54

06-11-2009, 09:12 AM

I made my new plates (Please do not copy my images)
40050

40051

40052

mm54

06-11-2009, 09:27 AM

Our L300's have 2235H's in them, and we love that woofer, very much! It's offers tight, highly detailed bass, and a warm sweet sound that is very natural to our ears. When I say "our" ears, I mean Sweet Bride and myself.
Hi Doc and thank you for your impressions on the L300

you hear a real difference between 136A and 2235H ?
is the range of response is clearer , more nervous ?
Michel

4313B

06-11-2009, 10:09 AM

The biggest differences between the 2235H and 2231/136A was the introduction of a progressive suspension and high power voice coil. The progressive suspension was developed to deal with the issue of dynamic offset. At higher output levels, coil motion is no longer centered at the vertical midpoint of the coil gap but can be centered at some point outside of the gap. This greatly increases distortion. The progressive suspension acts to counteract this phenomenon and keep the coil centered. Power handling was increased with these suspension changes and the change to a kapton coil former. The result was that the later 2235H had twice the power handling of its predecessor.

Whether or not anyone can actually hear the improvement can be debated just like anything else. I know Greg could. After a few beers I really don't think it matters.

Fred Sanford

06-11-2009, 10:20 AM

^^ Thanks for that...

je

mm54

06-11-2009, 10:37 AM

Whether or not anyone can actually hear the improvement can be debated just like anything else. I know Greg could. After a few beers I really don't think it matters.

it's very fair, listen good music with good beer, a real pleasure !!

a person who loves music and beer can not be fundamentally wrong!

Doc Mark

06-11-2009, 06:59 PM

Hi Doc and thank you for your impressions on the L300

you hear a real difference between 136A and 2235H ?
is the range of response is clearer , more nervous ?
Michel

Hello, Michel,

The first L300's that I heard had their original woofers in them, and I remember them being simply outstanding!! I've heard several other sets of those wonderful speakers over the intervening hears, and always loved them. But, I have heard other speakers, including some that I have made myself, with the 2235 woofers, and for whatever reason, seem to prefer them. When we got the chance to buy our L300's with 2235 woofers, we were really happy about that, and dearly love our speakers, very, very much! BUT, had they contained their original woofers, rather than the 2235's, I'm sure we would have bought them and enjoyed them, just as they were. But as for the 2235's, I've always thought they were more punchy on the bottom end, less boomy, and more accurate, than the original woofers. For what it's worth.... Take care, and God Bless!

Every Good Wish,
Doc

mm54

06-12-2009, 08:50 AM

40053

40055

mm54

06-12-2009, 10:32 AM

I connect my L300 tomorrow on my 1801+4401 (http://www.audioheritage.org/vbulletin/showpost.php?p=255290&postcount=20) for a first listening impressions follow ..
40058

hjames

06-12-2009, 10:53 AM

Nice pictures!
Thank you for sharing with us!

mm54

06-12-2009, 10:59 AM

Nice pictures!
Thank you for sharing with us!

thank you hjames (http://www.audioheritage.org/vbulletin/member.php?u=3090) it is a pleasure, what do you think of my new nameplate JBL (http://www.audioheritage.org/vbulletin/showpost.php?p=255184&postcount=65)

it is a big job, but you see the result

BMWCCA

06-12-2009, 11:18 AM

what do you think of my new nameplate JBL (http://www.audioheritage.org/vbulletin/showpost.php?p=255184&postcount=65)

I think your little water-mark or trade-mark symbol embedded in your photos is a bit over the top. If . . . IF . . . anyone wanted to copy your photos they still easily could and two seconds in Photoshop would sponge-tool away your mark. What proprietary material are you trying to protect from copying? Your copy of the JBL logo??? :confused:

hjames

06-12-2009, 11:23 AM

yeah, just share images freely - its simpler and doesn't offend anyone here ...

i know, I know, I really need to take some time and build some grills ...
but that would detract from my listening time!

mm54

06-12-2009, 02:47 PM

I think your little water-mark or trade-mark symbol embedded in your photos is a bit over the top. If . . . IF . . . anyone wanted to copy your photos they still easily could and two seconds in Photoshop

I know it is easier to copy than to do the work himself .. yes I know it's silly of me but
I had a problem with a person who used my photo to sell its products.
So for a non-commercial use, there is no problem, we are pleased to share these images.
I do not want to offend anyone, I find here many pleasure to read and share
and for the orange JBL logo (http://www.audioheritage.org/vbulletin/showpost.php?p=255184&postcount=65) it is just a glance on the work I have done to do the new signs of my L300 and I have delete it now.

midlife

06-12-2009, 02:59 PM

Congrats you are going to LOVE the 300s. :D

mm54

06-12-2009, 03:17 PM

hjames (http://www.audioheritage.org/vbulletin/member.php?u=3090)
it is your 4341 in blue ?

Congrats you are going to LOVE the 300s. :D

yes I loved them since a very long time, it's crazy as you can focus on things !

hjames

06-12-2009, 04:08 PM

hjames (http://www.audioheritage.org/vbulletin/member.php?u=3090)
it is your 4341 in blue ?

yes it is ... a used pair from a recording studio in Pennsylvania - but the cabinets have almost no scratches in the finish! We like them!

elshout

06-20-2009, 07:58 PM

After reading this tread, I have a question. Can the JBL 2235 woofer be a direct replacement for the 136A in a L300? I know it is not exactly the same, that is not what I am asking. What I am trying to find out is the cabinet and port appropriate and is the crossover appropriate? Or is there some modification needed if you put 2235's in the L300?

Thanks
Scott

Doc Mark

06-21-2009, 09:22 AM

Morning, Scott,

Our L300's have 2235H's installed in them, and we LOVE that speaker in them!! If you drop in some 2235H's in your L300's, I believe they will work perfectly, with no retuning, or modifiying necessary. Crossover works well, too.

Were you born and raised in McKinney, or moved there later? I am from Odessa, and we were just in Texas a few days ago, visiting relatives. Great State in many ways, and I'm proud for have been raised there. I do HATE chiggers, though, as Sweet Bride and I both got a ton of bites whilst there!! I have 93 bites, and she garnered 44! Damn chiggers to hell, as far as I'm concerned!! ;);) Take care, and God Bless!

Every Good Wish,
Doc

macaroonie

06-21-2009, 06:48 PM

Doc---- What is a Chigger ?

hjames

06-21-2009, 06:55 PM

Doc---- What is a Chigger ?
Nasty little bugs out in the wild - they bite you and suck the sweet sweet blood ... and leave welts --- ugh!

BMWCCA

06-21-2009, 08:16 PM

Nasty little bugs out in the wild - they bite you and suck the sweet sweet blood ... and leave welts --- ugh!That's putting it mildly. Brings back ugly memories of childhood summers spent learning golf in the Midwest and picking up horrible bites in the deep rough. That'll teach you to hit a straight drive! I'd be very happy never again to encounter a chigger: http://en.wikipedia.org/wiki/Harvest_mite

Doc Mark

06-21-2009, 08:46 PM

Evening, Mac, and All,

Sorry I didn't make that clear in my post. I got into talking "one Texan to another" and forgot that we are an international band here at LH. Thanks for the comments and clarification, Heather and Phil. You are right in that chigger bites are really nasty and I would only wish such things on terrorists, rapists, and child molesters, but nobody else. In fact, my idea of a sort of hell, includes head to toe coverage of thousands of chigger bites!! Oh, man.... makes me itch, just thinking about it!! It's been about one week since Sweet Bride and I were initially bitten, but our bites are still very nasty, somewhat painful, and itchy. They also look absolutely horrible, with a few of them having gotten a bit infected despite our extreme care not to scratch them. Oh, well.... could have been far worse, so we'll not complain. But, beware of chiggers, my friends, as they are not fun, and that's an extreme understatement!! We found a medication at Walmart that actually seems to help with chigger bites, and it's called "Chiggerex Plus". Supposedly good for other bites, including those from the mosquito. We're just about out already, so today, I went online and found a place that sells the vials of "Chiggerex Plus", 6 for $12 plus $5 for shipping. You can bet I ordered a set, and asked for quick shipping, too!!

By the way, we really missed our L300's whilst away from home, and as soon as we returned, I fired them up and listened to some Diana Krall during some of the unloading!! It's good to be home again!! Take care, Friends, and stay clear of chiggers! God Bless!

Every Good Wish,
Doc

mm54

06-22-2009, 05:30 AM

hi Scott from Rolf ,Steve K and 4313B hope that help you

The 136A woofer is the same as the 2231A woofer. These cone kits are no longer available. 2235H is a later model of "the same woofer". The re-cone for kit for your woofers is is the 2235H kits. Fits perfectly, not exactly the same, and some claim to hear a difference, I could not.

Hi all,
I just want to to pass on information that the newer JBL 2235 recone kits come with larger diameter dust caps now. If anybody is planning on having a recone done, and if 'trueness' to the original as far as appearance is important to you, it might be better to confirm the caps' size. If the caps on the old cones are still intact, you may have them removed and installed on the new recone kits. However, I'm told that audibly there's no difference with the larger caps. This information comes from a techie with Harman Int'l in Japan.
- Steve K

They've been modified for bi-amping. You should go through them thoroughly to ensure the modifications have been done correctly.
C8R2231 kits for the 136/2231 transducers have been gone for ages. I can't think of a single reason to attempt to find any either. Use the C8R2235 kits. The LE85 takes the D16R2420 diaphragm and the 077 takes the D16R2405 diaphragm.
Yes, the alnico magnets can be recharged.

mm54

06-23-2009, 07:52 AM

if anyone has the original documents on L300 SUMMIT I'm interested (if you want to separate, of course!)
I look at this time the JBL L-300 Summit Brochure
40388
contents 4 pages color salesbrochure contains photos, circuit descriptions, and specifications for the JBL L-300 Summit
i think This Brochure was printed in 1973 but if you have another date ...

BMWCCA

06-23-2009, 08:34 AM

if anyone has the original documents on L300 SUMMIT I'm interested (if you want to separate, of course!) I've had that brochure from when it was new, but I'm a pack-rat. You do know that a later version of this one (and many others) are available in electronic form in the site's library, don't you?

Dated 1976: http://www.lansingheritage.org/html/jbl/specs/home-speakers/1975-l300.htm

mm54

06-23-2009, 09:10 AM

thank you BMWCCA (http://www.audioheritage.org/vbulletin/member.php?u=3653)
yes i have the links but it is the original brochure that i want ..more difficult
also i prefer the Dated 1976 ! it is the date of mine !

i would like also the "L300 instruction manual" original :
this is a message from my friend ounesh (http://www.audioheritage.org/vbulletin/member.php?u=1379)
The user manual is in black and white but the chapter titles
are light brown on bottom.
The paper is of good quality size 215x140mm
This "L300 instruction manual" was supplied with a double sheet, thick format
280x215 color. Above on the first page is the photo of the L300 and the
4333 that the Lansing Heritage site and back a few lines on each hp

mm54

06-26-2009, 01:26 AM

L300 SUMMIT use a 2235H (http://www.jblpro.com/pages/components/2235h.htm)and the B460 Passiv Subwoofer use 2245H (http://www.jblpro.com/pages/components/2245h.htm)
I wonder if it's interesting to use a JBL B460 (http://www.lansingheritage.org/html/jbl/specs/home-speakers/1983-b380-b460.htm) coupled with L300 SUMMIT ? there is a filter system JBL BX63 (http://manuals.harman.com/JBL/HOM/Technical%20Sheet/BX63%20ts.pdf) with the B460 connected between the amp and speakers, this does not duplicate with 2235H of L300 ?
I have also OUT subwoofer on my Accuphase E203, and actually my L300 are connected directly on Speaker L and R.

how the system can be connected if interesting ..
the JBLPrice (http://www.lansingheritage.org/html/jbl/reference/price-lists/1970-1999-prices.htm) for B460 on 1993 is $2150 has the same buying power as $3181,94 in 2009 (calculing with Inflation Calculator)

mm54

07-06-2009, 12:57 PM

L300 test with Bose4401+1801
I note that these are my impressions and I understand that we can have a different view .
the sound is very well defined, the 1801 provides a gain control L & R very precise, it is necessary that the buttons are 2H to see that the meters begin to move ... LEDs are useful for controlling the gain of each channel but i prefer without! after a half hour of operation, the sound seems better
the 4401 sets the volume at will, control of bass and treble is very precise with a very wide range! the loudness is well calibrated, 4401 can control two 1801
The L300 follow without hesitation and Precision, I am amazed at the quality of sound, the power generated (only half volume control! no neighbors next to me), ,
decidedly the L300 is very homogeneous, I discovered the ability of L300 and I'm very surprised !
I am very enthusiastic, very great sound...
I saw the 2235H vibrate with a special dynamic , the treble is very precise, clear and well-distributed, the voice is clear, warm and well-trained.

a very good time of life, thank you JBL !
40657