jbl 2243

[gazzamongo]

what are the theile small parameters....not on jbl pro website.

don't suppose any of you know if a 2241 or 2242 cone will fit this motor?

gazza

http://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&rd=1&item=5725724892&ssPageName=STRK:MEWN:IT

[gazzamongo]

i was hopeful someone on this board would know.

gazza

[Mr. Widget]

Never heard of a 2243HPL. I guess it doesn't matter as "perfect condition other than the voice coil being open circuit" means it is a raw empty frame you are buying. I love these eBay descriptions! :D :D

It looks like a 2242 frame to me. I was going to suggest you ask the seller to take some measurements of the basket depth etc. I see you bought it. When you get the frame measure it and post. I am sure someone with a handy 2242 can measure theirs to confirm.

The 2242 recone kit is quite reasonable at $169.

Widget

[gazzamongo]

.

[scott fitlin]

But in the pics, it does seem to say 43!

Never saw this before. maybe they have a different designation for the UK?

[gazzamongo]

im in contact with jbl to find out the theile/small parameters

this is their initial response (nb the parameters aren't in the link supplied).....

"Dear Sir,

The 2243 T/S information can be found on our website www.jblpro.com
This link takes you directly to the page you need: http://www.jblpro.com/pub/technote/thiele.pdf

The 2241 is a different driver design and the cones are not interchangeable. The recone you require is a C8R2243 and this should be available via one of the service outlets of Harman Pro UK. Max Lindsay-Johnson (head of division) or Tom Williams (acoustician/technical support) who are cc'd on this email will be able to help you here.

Thankyou for your enquiry, Best Regards,
Mark Bailey
JBL Professional (Europe)"

i'll post the details when i find out

cheers

gazza

[scott fitlin]

Originally posted by Giskard
I'll dig them up for you at some point. Maybe in a few weeks. There is a JBl 2243HPL? What is the difference between this and a 2242?

[Guido]

Originally posted by gazzamongo
This link takes you directly to the page you need: http://www.jblpro.com/pub/technote/thiele.pdf



I can't find any info about the 2243 there :mad:

[scott fitlin]

So what is the difference?

[Oldmics]

C8R2243 is a foam edged cone.

Sorta like a 2241 and a 2245 crashed into each other.

Closer to a 2241 which means a 2242 kit will not fit.

This speaker was used in the Synthesis in 1998.

All above info was provided from our friends at JBL Pro

Its a weirdo!

Oldmics

[gazzamongo]

asked jbl to provide theile small and more info about 2243.

when they respond i will post the results

p.s anyone horn loaded a 2242 with good results?

(know bruce edgar uses 2241 in seismic hornsub)

cheers

gazza

[gazzamongo]

do you have any info about the parameters of this driver?

is the 2243 foam edge cone my only option to re-cone this driver?

tia

gazzer

[Oldmics]

Sorry no other info.

If I were in your shoes,I would take the frame to a service center and see if a 2241 kit fits into the motor assembly.

Of course the correct way is to use the C8R2243 cone kit and restore it to original specs.

Oldmics

[4313B]

The 2243H uses the 2242H basket and has a foam surround.

Fs = 30 Hz
Qms = 5
Vas = 338.1 liters
Cms = 0.155 mm/N
Mms = 0.182 kg
Rms = 6.854 mohms
Xmax = 5 mm
Xmech = 10 mm
P-Dia = 397.4 mm
Sd = 0.124 sq.m
P-Vd = 620.1 cu.cm
Qes = 0.2
Re = 5.2 ohms
Le = 1.4 mH
Z = 6.24 ohms
BL = 30.2 N/A
Pe = 700 watts
Qts = 0.19
no = 4.401 %
1-W SPL = 98.58 dB
2.83-V SPL = 100.5 dB

[Guido]

WOW

How could we miss this driver?
It's a monster!

[4313B]

Well, I personally don't "do" Sound Power stuff and this is the only reference I can find -

http://www.jblproservice.com/pdf/Systems%20Reference%20Charts/Sound%20Power%20P-Series.pdf

http://www.jblproservice.com/pdf/Sound%20Power%20P-Series/P749.pdf

http://www.jblproservice.com/pdf/Sound%20Power%20P-Series/P798.pdf

http://www.jblproservice.com/navigation/Sound%20Power%20P-Series.html

so...

[gazzamongo]

provision of theile smalls much appreciated.

can i assume then that a 2242 cone would also fit?

i ask only as there are cheap 2242 aftermarket recones available here(....of which , can i trust they will match jbl spec???)

cheers

gazza

[4313B]

I wouldn't assume it. Ask JBL Pro or do as Oldmics suggested.

[Zilch]

I notice 2227H there. Is that the same deal? 2226H with a foam surround for "extended" bass?

[scott fitlin]

Smooth curvilinear cone, cloth roll surround, 100db sensitivity, 50hz Fs, high efficiency 15in midbass driver! More for PA stacks.

[GordonW]

Originally posted by Oldmics
C8R2243 is a foam edged cone.

Sorta like a 2241 and a 2245 crashed into each other.

Closer to a 2241 which means a 2242 kit will not fit.

This speaker was used in the Synthesis in 1998.

All above info was provided from our friends at JBL Pro

Its a weirdo!

Oldmics

So, it's a vented-gap, foam-edge 18"? That's kinda cool.

I always thought JBL only made one foam-edged 18"... guess this proves otherwise!

Regards,
Gordon.

[luxmanlover]

It's hard to say from the pics but it looks like your driver has been reconed once already. The surround looks more like an accordian surround than a foam one. Looks like that 18 led a hard life ...lol...sorry, I would look on the back side of the cone and see if you can find some numbers to cross to see what has been done already. If it was me, considering the price you paid for the frame I'd pony up for the JBL 2243 recone kit. That would be on kick ass sub.
Kelly

[gazzamongo]

well spotted...i hadn't noticed the concertina surround.

shouldn't matter if the previous voice coils were fryed as long as the motor hasn't been baked in the furnaces of hell, then a new cone effectively gives me a new driver right?!?

my inclination is for a huge horn sub...but whatever i do with it i'll post the results


cheers


gazza

[Zilch]

If it was me, considering the price you paid for the frame I'd pony up for the JBL 2243 recone kit.

Lessee. That's less than $20, no?

You should be ASHAMED of yerself.... :p

[gazzamongo]

you kidding........you guys get all the good stuff in the U.S of A.

nice when a few scraps of audio nirvana fall into 'our' impoverished british hands...(have to work till retirement to afford tannoy drivers....everybody say.....ahhhh!)

cheers

gazza

[Zilch]

http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&category=23794&item=3757314326&rd=1

[johnaec]

Originally posted by Zilch
I notice 2227H there. Is that the same deal? 2226H with a foam surround for "extended" bass? According to the current tech doc, the 2227H is not recommended for use as a subwoofer: http://www.jblpro.com/pages/pub/components/2227.pdf

John

[Alex Lancaster]

It´s more like a VGC 2220H, more power handling, less power compression, and very efficient, but not for deep bass.

[gazzamongo]

that driver you spotted on ebay has letters J657-05355 on the back.

what does that mean (in advanced jbl ref number-speak) ......anything?


gazza

[Zilch]

Originally posted by gazzamongo
what does that mean (in advanced jbl ref number-speak) ......anything?
Dunno. Maybe one of the reconers here will recognize the driver though....

ANYBODY? What is the mystery JBL 18 there?

[Alex Lancaster]

It is an E155, 2240 or 2245, depending on the cone & coil, but who knows what it is or was; it is not a 2241 or 2242, it only has the center vent.

[baldrick]

I know this is an old thread, but can't find too much info about the 2243 :(

Anyone used this driver? And how do they comapre to i.e. 2242? What is the real difference between them, is 2242 more meant for subwoofer and 2243 midbass or..?

I'm thinking about useing them for my hometheather but don't know how well suited they are for this.

[Eaulive]

I know this is an old thread, but can't find too much info about the 2243 :(

Anyone used this driver? And how do they comapre to i.e. 2242? What is the real difference between them, is 2242 more meant for subwoofer and 2243 midbass or..?

I'm thinking about useing them for my hometheather but don't know how well suited they are for this.

Do you have the driver? Can you post pictures? This is kind of a rare driver :blink:

[baldrick]

I haven't bought them yet so unfortunately I don't have pictures.

They are in fact not that rare (at least not here in Norway) since they were used in the quite popular JBL P749.

[Eaulive]

I haven't bought them yet so unfortunately I don't have pictures.

They are in fact not that rare (at least not here in Norway) since they were used in the quite popular JBL P749.

I don't think it's a very popular serie here in America, I learned abot this driver 15 minutes ago :D

[baldrick]

I'm a bit confused about pictures I've found of the 2243 since no of them have foam surround, so I'm not sure if this is a correct 2243 but I think so:

http://i.ebayimg.com/00/$(KGrHqYOKnME1Up75JdtBN(q6S7sbQ~~_12.JPG

http://i.ebayimg.com/00/$(KGrHqUOKpIE0VM4LTqYBN(q6bm,ug~~_12.JPG

http://i.ebayimg.com/00/$(KGrHqYOKo0E0fjsyVbEBN(q6iHtpQ~~_12.JPG

[Eaulive]

According to the application, since they are used in SR cabinets P749 and P798, I doubt they have a foam surround, my guess is that they are more like a 2241 or 2242, measuring the basket and magnet would sort it out.

http://www.jblproservice.com/pdf/Systems%20Reference%20Charts/Sound%20Power%20P-Series.pdf

[Eaulive]

The 2243 has copper wire according to the spec sheet of the P749/798, while the 2241 and 2242 have aluminum wire.... :hmm:

2240 and 2245 have copper but they don't have this basket


--------------------------------- edit --------------------------

Also, the cabinet with two 2243 is rated 1200W AES, while a cabinet with a 2242 will usually be rated at 1200W AES per driver, such as the ASB6128 or ASH6118.

The 2243 would be a 2242 with a 2240 era cone and VC ??? :dont-know:

[baldrick]

It's stated several times that the 2243 share the same basket as 2242 so that a 2243 can be reconed as 2242. The specs for raw speaker says that 2242 can handle 800 watt, vs 700 watt for 2243 so I'm a bit confused as well :crying:

[Eaulive]

It's stated several times that the 2243 share the same basket as 2242 so that a 2243 can be reconed as 2242. The specs for raw speaker says that 2242 can handle 800 watt, vs 700 watt for 2243 so I'm a bit confused as well :crying:

For power ratings one has to be careful as there is some differences in depending on the era.

Lately we see AES ratings.
At some point there was "program power"
Before we saw "pink noise power" and even before "sine wave power".

As a rule of thumb I consider sine wave and pink noise to be +/- the same, and AES and program being equal and equivalent to twice the sine wave power.

This is a big can of worms :D

That was JBL, now don't get me started on the "RMS power" used by some others. :banghead:

[Jakob]

I have four of these drivers and they all look the same as the picture you posted. What I have learned are that they indeed share the same basket as 2242. They have a somewhat lower Fs (30Hz compared to 35 for the 2242), a lower power handling (700W compared to 800W for the 2242) and a lower sensability (97dB compared to 98dB for the 2242). My contact at a JBL service center thought that this driver were a complement to the 2242 when smaller boxes were needed but I wouldn't take that as a fact.

I haven't been able to compare them to a 2242H driver but as far as I'm concerned they sound awsome. Tight, deep and clear. As I've written in another post here on the forum I'm testing 2 of my subs with a 6dB filter at 25Hz. Despite this low cut off, due to the 6dB roll off, the 2243's is forced to produce sound in rather high frequencies and they still sound great. The 6dB roll off means I trade some of the tightness for something that sounds better overall IMO.

I've paid 1500 to 2500 SEK for mine. If the price is right, go ahead and buy them. I would think they are as good a driver as the 2242H

[baldrick]

Is 4645 the best suited box for 2243 or is there any better ideas? Got my self a pairs of these today :bouncy:

[dannykingston]

Hi there, just selling one of these speakers, used but in good working conditions.

Shipping from Italy in accordance to buyer's requests.

PM or mail to kodamaroots at gmail.com if interested to trade outside the eBay.

http://www.ebay.it/itm/JBL-2243-HPL-18-039-039-Vintage-Speaker-Subwoofer-/26198521818

Cheers