JBL 2490h The big guy Any know anything about this driver ?

[JBLGUY]

Hey guys.....has anyone had any experience with the big dog of JBL drivers. This is the driver with the 3 inch exit hole. I have always wanted to obtain a couple of these along with the ultra large horns that go with them.

Come on you JBL guys does anyone have any info out there to share ?

Thanks :cool:

[Hofmannhp]

Hey guys.....has anyone had any experience with the big dog of JBL drivers. This is the driver with the 3 inch exit hole. I have always wanted to obtain a couple of these along with the ultra large horns that go with them.
Come on you JBL guys does anyone have any info out there to share ?

Thanks :cool:
Hi JBLGUY,

try this link:
http://www.lansingheritage.org/images/jbl/catalogs/1998-pro/page41.jpg

all I can tell you : don't try to use a drive with the expectation of "the bigger the better" , this driver was made specialy for stadiums to blow out the human speach frequencies (250Hz to 4kHz) in one frequency band. I had heard this type with music and tell you.....take the 2"s or 1,5" which sound a lot better for this.
HP

[JBL Dog]

Hey guys.....has anyone had any experience with the big dog of JBL drivers. This is the driver with the 3 inch exit hole. I have always wanted to obtain a couple of these along with the ultra large horns that go with them.

Come on you JBL guys does anyone have any info out there to share ?

Thanks :cool:

I happen to have one of these sitting in the "Dog-house". It's NOBS (new-old-B-stock). I checked with a local JBL dealer and they're over $800 each (that's not list price). If ya really gots to have one, $300 plus shipping and it's yours.

This message comes from JBL Dog :dj-party:

[davp2000]

I happen to have one of these sitting in the "Dog-house". It's NOBS (new-old-B-stock). I checked with a local JBL dealer and they're over $800 each (that's not list price). If ya really gots to have one, $300 plus shipping and it's yours.

This message comes from JBL Dog :dj-party:I am interested in purchasing 2390 contact davp2000

[hjames]

I am interested in purchasing 2390 contact davp2000

Kind of an old message, from 2005 well over 6 years old!

You should check the date on forum posts ...

01-31-2005, 10:06 PM

I mean, he may still have it and get back with you -
but 6 years is a long time for folk selling hardware.

[davp2000]

Kind of an old message, from 2005 well over 6 years old!

You should check the date on forum posts ...

01-31-2005, 10:06 PM
thanks anything newer? davp2000

[Elac310]

Anything newer ?
Well, I'm writing from the year 2015.

I have the 2490 on a 2392 horn. 2392/93/94 is the only series of horns that has a 3" entry, maybe some with 2,8" at Community and if you want the big big guy, the Communiy M4 (4" exit) would be your "thing".
I use it in home audio, about 5 meters (15ft) listening distance. I'm overall pleased with this driver/combo covering the 300hz-2khz region in a 3-way LS system. I find sound presence great even a lower volumes, absolutely effortless. The section above 2khz turned out to be the greatest challenge; still working on it after about 3 years.

[jblguy]

Anything newer ?
Well, I'm writing from the year 2015.

I have the 2490 on a 2392 horn. 2392/93/94 is the only series of horns that has a 3" entry, maybe some with 2,8" at Community and if you want the big big guy, the Communiy M4 (4" exit) would be your "thing".
I use it in home audio, about 5 meters (15ft) listening distance. I'm overall pleased with this driver/combo covering the 300hz-2khz region in a 3-way LS system. I find sound presence great even a lower volumes, absolutely effortless. The section above 2khz turned out to be the greatest challenge; still working on it after about 3 years.
You still rockin those bad boys? always wanted to make something with those. I love you observation of effortless presence......100% right on with big mid horns. I love big mids!!!

[jblguy]

I just noticed I was the original poster on this under my first name here. Same name now just lower case....cool.
Still something I always felt had potential for a setup with these mutha's

[JDZA]

Hey guys.....has anyone had any experience with the big dog of JBL drivers. This is the driver with the 3 inch exit hole. I have always wanted to obtain a couple of these along with the ultra large horns that go with them.

Come on you JBL guys does anyone have any info out there to share ?

Thanks :cool:

I bought a pair of these 19 years ago as a stopgap until I could afford something better. They were going to cover 200 to 1 kHz with very steep active filters,top and bottom. They are still here. The compression drivers above them has gotten more exotic 4 times and the steep upper xo gave way to a simple 6dB oct where the components in the xo cost more than the 2490 itself. They are still here,in daily use and not going anywhere.

https://live.staticflickr.com/65535/52118941584_e1304f28a1_b.jpg (https://flic.kr/p/2npzcx7)

[jblguy]

I bought a pair of these 19 years ago as a stopgap until I could afford something better. They were going to cover 200 to 1 kHz with very steep active filters,top and bottom. They are still here. The compression drivers above them has gotten more exotic 4 times and the steep upper xo gave way to a simple 6dB oct where the components in the xo cost more than the 2490 itself. They are still here,in daily use and not going anywhere.


That looks amazing. Giant bass horn you got there. That look pretty ultimate. Would love more details and pics if your able. Is the large mid horn custom built to take a 3inch mouth?

[Mr. Widget]

That looks amazing. Giant bass horn you got there. That look pretty ultimate. Would love more details and pics if your able.+1

Please describe the bass horn construction and your system over all in more detail. Really beautiful looking.


Widget

[JDZA]

+1

Please describe the bass horn construction and your system over all in more detail. Really beautiful looking.


Widget

This should give a general idea
https://live.staticflickr.com/65535/52122088556_526a6e9fa6_b.jpg (https://flic.kr/p/2npRk2f)

It is a 4 way horn system. 25 to 200 Hz is handled by a concrete and brick basshorn driven by 2X Mark Levinson 531 monoblocks. Crossover is passive line level at 200 Hz 24db/oct by Marchand. Low bass is the 2490 on a Iwata wood horn crossing at 900 Hz to a second Iwata with TAD 4003 drivers (Thanks Widget)Low crossover by same Marchand. No further crossovers. Driving amplifier First Watt F3. There is a dipole arrangement with JBL 2425 on 2344 firing rearwards as an ambient driver piggybacked on front but pulled down in level by ipad made up of Duelund Cast resistors. Tweeters are Goto ss16TT driven by Marchand 6db oct line level crossover at 10 kHz with a piggybacked JBL 2404 via Duelund Lpad as ambient tweeter firing rearwards. Driving amp is a second First Watt F3

Basshorn can (hopefully) be better seen in this darker pic

https://live.staticflickr.com/65535/52122085536_a770b68217_b.jpg (https://flic.kr/p/2npRj8b)

It is 3m long with a throat of 6264 cm2 and mouth of 48068 cm2. It is hyperbolic exponential with a q of 0.707. I think it is a 25 Hz horn flare. It is loaded by 5X Altec 515 16G drivers per side,making a total of 10. Rear wave calced by reactance annulling Here is the initial McBean prediction

[url=https://flic.kr/p/2npL23A]https://live.staticflickr.com/65535/52121052522_1409bdeee2_b.jpg

Here are the left and right horns,unequalised and I think 1/24 filtered in the graph. The crossover is in situ. Freq and db scale correct but ohms not. All drivers in parallel make for a rather gruelling load even if very high eff of more than 105db/w

[url=https://flic.kr/p/2npTSSe]https://live.staticflickr.com/65535/52122585905_ea933efaa6_b.jpg

Finally, during construction. My wife is 6ft tall. My daughter.in the pic, is now 22 yrs old.

[url=https://flic.kr/p/2npRk2W]https://live.staticflickr.com/65535/52122088596_fd41d1e3cc_c.jpg

[jblguy]

Well I'm impressed with any man who actually lives in his speakers. WOW ! What a system. I'd love to hear it. But it's a bit of a boat ride so guess I won't.
I'd love to see behind those horns to see the drivers. Hell I'd love to see it all frankly. Very impressive. I run a 3 horn system 5 way setup.
Love big. Is the listening room you use big?
More pics would be welcome and thank for what you've shown so far.
Welcome to the forum as well. Good to have more horn lovers here.
I've seen in pics another bss horn done like that. Good job and hows it sounds bass wise?

[Mr. Widget]

Welcome to the forum as well. Good to have more horn lovers here.Oh, he’s not a new member. He just stepped away for a while like you and has joined us again.

Yes, it is very nice to be reminded of this project and seeing how the room has evolved.

What a beautiful solution. It even has a high WAF rating… at least in my house. Not that I would get away with a full bass horn :banghead:, but still nice to see it.


Widget

[jblguy]

Oh, he’s not a new member. He just stepped away for a while like you and has joined us again.

Yes, it is very nice to be reminded of this project and seeing how the room has evolved.

What a beautiful solution. It even has a high WAF rating… at least in my house. Not that I would get away with a full bass horn http://www.audioheritage.org/vbulletin/images/smilies/banghead.gif, but still nice to see it.


Widget
I would tell my wife it's a closet for her new clothes I'm buying her.....prob-lemo fixed!

[JDZA]

Oh, he’s not a new member. He just stepped away for a while like you and has joined us again.



Widget

The thing is; time goes on ,passwords have to be more secure and email addresses change. These seem to be a fatal combination for Lansing Heritage Forums. I have been a supporter all these years but unable to log in under my old moniker. This is an incredible site with incredible info. Amongst the popcorn and "What is Best" bickering this site deserves to thrive.

In fact, without this site ,the system would have been impossible. It was here that I learned to substitute the JBL 2205 for K33 in Klipschorns and learned what a great driver that is, learned to substitute the 2404 for the dreadful T35 derivative tweeter in same and then learned there should be more than khorns. Initially it was going to be an all JBL horn system. Upper mids was going to be 2440, then here I learned that a 2450SL diaphragm on 2440 makes a killer combo. In fact it is still one of my favourites and now see use in another TAD based system. From Ian McKenzie I got the aquaplassed JBL 2435 that was in the system for a while but now serves as a lynchpin in another person's system.This was replaced by Gotos which in turn was replaced by TADs from Widget. Loving the 2205, basshorn was going to be around this but I soon realised chances of getting 10 of those are nil. Tod White and Steve Berger helped in choosing the 515 16G, that despite my misgivings about a too high Fs turned to be absolutely breathtaking.See it is not about how deep your bass is but how fast and clean your midbass is.

Despite all the changes, all the discarded JBLs still march on in my systems. That except for the 2435 wrenched from me in a tearful exchange.

https://live.staticflickr.com/65535/52123082173_34714e830b_b.jpg (https://flic.kr/p/2npWqoz)

[jblguy]

Another big speaker....cool.
If you are with a woman she must be the coolest one on the planet.
Thanks for the pics....love it. More please.
More horn pics would be great.

[JDZA]

Another big speaker....cool.
If you are with a woman she must be the coolest one on the planet.
Thanks for the pics....love it. More please.
More horn pics would be great.

I'm actually very proud of that project.I started as a throwaway where Ian Mckenzie's 2435 got swapped for a pair of Kinoshita type boxes. After seeing the massive care that went into the construction of the boxes the bass drivers became a TAD 1601A on the bottom and 1603 up top. Both getting identical signals but according to Scott Fitlin ,on this site,1601 is very sweet and 1603 punches like hell. He was right!. Treble is,again, Iwata with the JBL 2440 with 2450SL diaphragms( A favourite-did I mention it?)

They are big,very big

https://live.staticflickr.com/65535/52125704781_412ed92ddb_b.jpg (https://flic.kr/p/2nqaRZX)

https://live.staticflickr.com/65535/52125704821_789d72b0c5_b.jpg (https://flic.kr/p/2nqaS1D)

https://live.staticflickr.com/65535/52126205590_bed38d0125_b.jpg (https://flic.kr/p/2nqdqSA)

Crossovers were built by a friend

https://live.staticflickr.com/65535/52124706367_efb6597ccb_b.jpg (https://flic.kr/p/2nq5KcV)

Unequalised.unfiltered response at the listening seat

https://live.staticflickr.com/65535/52125945589_79a34c27e1_c.jpg (https://flic.kr/p/2nqc6zP)




























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[jblguy]

I see you have a internal enclosure inspector. He's quite cute and I'm sure a wonderful pet. Does the boom boom scare him. I mean with your system he must be used to it.
You have some cool stuff. We all need a warehouse.
Wonderful pics. Thanks....more of that bigger setup would be cool.

[carolus]

I'm actually very proud of that proje
....Crossovers were built by a friend........
....Unequalised.unfiltered response at the listening seat...


Symmetrical beautiful concept and construction of filter X-over... a feast for the eyes.
Nice frequency band display.... very pleasant (& good relax seat).
Chapeau bas.
(hoedje af)
Karel