JBL 476be/435be

[hlaari]

Can someone tell me how much pair of JBL 476be and 435be cost.
I am going to replace my JBL 2435hpl drivers for Be drivers.







regards
Ari

[HCSGuy]

Ari,
The 2435hpl already uses a Be diaphragm. 2431 is the same driver with an aluminum diaphragm. 435be is a 2435 with the Be diaphragm coated with aquaplas and a different back cover. 476 is the 4" diaphragm version. I would pursue finding a LH member who can aquaplas your existing diaphragm. 435be's show up on ebay periodically used, selling for around $700/pr, but with questionable heritage. I don't remember seeing a legit pair sell. JBL no longer sells parts directly, so it's going to be really tough to find a pair of 476's, but I'd guess $5k might get you a pair from some collector in Japan.

[hlaari]

Ari,
The 2435hpl already uses a Be diaphragm. 2431 is the same driver with an aluminum diaphragm. 435be is a 2435 with the Be diaphragm coated with aquaplas and a different back cover. 476 is the 4" diaphragm version. I would pursue finding a LH member who can aquaplas your existing diaphragm. 435be's show up on ebay periodically used, selling for around $700/pr, but with questionable heritage. I don't remember seeing a legit pair sell. JBL no longer sells parts directly, so it's going to be really tough to find a pair of 476's, but I'd guess $5k might get you a pair from some collector in Japan.

Sorry I forgot to put aquaplas in my note. I put offer on a pair of JBL 435AL on ebay in last month, but I did not vin. I thik the price end in $630 for the pair.
I was going to buy them an put be aquaplas diaphragm in them.
I live in Iceland, but I think at I can buy those drivers like parts from JBL audio service here in Iceland. I ask them about the price of JBL 435be diaphragm and a pair cost around $1600.

I think at I am the only member from Iceland on the forum



thanks
Ari

[speakerdave]

. . . I think at I am the only member from Iceland on the forum
thanks
Ari

Well, that would mean about the same proportion of the population there as here are members. A couple of members have applied aquaplas to these diapragms in the past. You might be able to find them by reading old threads. OR, perhaps they will chime in here, but remember, July 4th is a national holiday here, and although these forums are at times a place to see fireworks, today most Americans, even including our members, are probably looking to see them in the sky.

[Ian Mackenzie]

A couple of members have applied aquaplas to these diapragms in the past. .

Like on a record turntable platter. (if you can find one!)

I watched Rich (in the UK) do this. I think he applied two coats.

[richluvsound]

Thanks Ian,

the trick is not to over do it !2 coats is correct. The first coat is just enough to cover the diaphram evenly , the second coat should be just enough to cover any area of diaphram not covered by the first. Thin and even , we practiced on the base of a coke can . I have seen some here that have been too thickly applied . 1 db not 10 db damping is what your after !

[HCSGuy]

but a set of 'plassed 2435Be's on the 2352 horns sound very very nice with little EQ or effort.

That's good to hear - I've got a pair of 2352's waiting for me to build into something.

[Rudy Kleimann]

That's good to hear - I've got a pair of 2352's waiting for me to build into something.

Yeah, those were MY horns! I thought by now they'd be making music! What happened?

[4313B]

Can someone tell me how much pair of JBL 476be and 435be cost.

The 435Be are ~ $1,800 a pair and the 476Be are ~ $6,000 a pair. The 435Be are available from Harman Consumer Group and the 476Be are available from Crown (with an Everest II serial number, therefore essentially unobtainable).

Technically the 435Be is no longer used in any current production system.

Arguably you would do better to simply put some Truextent Be diaphragms in some newer JBL 4-inch compression drivers and call it done.

[hlaari]

The 435Be are ~ $1,800 a pair and the 476Be are ~ $6,000 a pair. The 435Be are available from Harman Consumer Group and the 476Be are available from Crown (with an Everest II serial number, therefore essentially unobtainable).

Technically the 435Be is no longer used in any current production system.

Arguably you would do better to simply put some Truextent Be diaphragms in some newer JBL 4-inch compression drivers and call it done.

Can I get Be aquaplas diaphragm for JBL 2450SL or 2451SL drivers!
I think they have 82,5mm bolt circle like JBL 2435hpl. how much does this drivers cost?
did you sell the pair of JBL 476Be drivers you have for sale for few month ago?


Thanks
Ari

[hlaari]

The 435Be are ~ $1,800 a pair and the 476Be are ~ $6,000 a pair. The 435Be are available from Harman Consumer Group and the 476Be are available from Crown (with an Everest II serial number, therefore essentially unobtainable).

Technically the 435Be is no longer used in any current production system.

Arguably you would do better to simply put some Truextent Be diaphragms in some newer JBL 4-inch compression drivers and call it done.

Can I get Be aquaplas diaphragm for JBL 2450SL or 2451SL drivers!
I think they have 82,5mm bolt circle like JBL 2435hpl. how much does this drivers cost?
did you sell the pair of JBL 476Be drivers you have for sale for few month ago?


Thanks
Ari

[4313B]

Can I get Be aquaplas diaphragm for JBL 2450SL or 2451SL drivers!
I think they have 82,5mm bolt circle like JBL 2435hpl. how much does this drivers cost?
did you sell the pair of JBL 476Be drivers you have for sale for few month ago?


Thanks
Ari

Here's the link to driver prices. Transducer List.pdf

Note that the Pro version of the 435BE, the 2435HPL runs $2,798 a pair. I think you can get them off eBay for something like $20 though. They're pretty worthless. And extremely fragile! Don't bump them or let them come in contact with each other or the neo mags will rip the top plates loose from their super glue bonds. Then you'll have a $20 paperweight. They're very nice sounding but they aren't your dad's LE85's. They are meant to be bolted into a system and left there. They don't take well to lots of handling. Early versions suffered surround creep due to the manufacturing process. Later versions had that issue fixed. Mexico still isn't certified to make them. I guess they're kind of tough to make correctly. In fact, Mexico so far has only been certified to make three driver models. Three... That could be a problem...

I haven't decided yet whether or not I am going to sell my personal pair of 476BE's. They were awfully difficult to obtain and I might use them for something someday.

[hlaari]

I haven't decided yet whether or not I am going to sell my personal pair of 476BE's. They were awfully difficult to obtain and I might use them for something someday.[/QUOTE]



I have this drivers in my speakers JBL 2254j/2251j/2435hpl and 045Be
This is hornloded speakers with this crossover point 300Hz/700Hz/10kHz



regards
Ari

[Steve C 2020]

I haven't decided yet whether or not I am going to sell my personal pair of 476BE's. They were awfully difficult to obtain and I might use them for something someday.

I have this drivers in my speakers JBL 2254j/2251j/2435hpl and 045Be
This is hornloded speakers with this crossover point 300Hz/700Hz/10kHz



regards
Ari[/QUOTE]

Hi Ari,
Can you please tell me what kind of surround is used on the 476Be? Is it diamond pattern, fabric, etc? I have not been able to find a good picture of the diaphragm.

[HCSGuy]

A quick search will show that the 2450 and 2451 drivers are 4" (100mm) diaphragm drivers and have no parts interchangeable with a 2435HPL. They only used Titanium diaphragms, which were aquaplassed in the SL versions. You can get the TruExtent aftermarket Be diaphragms for them, but they are not aquaplassed.

If you are still pursuing your 2435HPL's, there are no other diaphragms available that I know of. Only JBL, Aluminum or Be, but the Be is not aquaplassed. I don't know any way to get the aquaplassed Be diaphragm of a 435Be - I don't think they serviced them, so the parts were never made available.