Would you, if you could?

[cooky1257]

The benefits of the 4" Truextent Be dias have been well discussed on here. We are all also more than aware of the legendary status of the large format 24**comp driver family.

I am a very satisfied user of the 2435 3" Be on a SAM1HF horn-they are sweet and lucid and wonderful.

My question;
I haven't/cannot get to hear, some 4" Be JBL/Truextent but have in mind 2451/2's+ Be+ SAM1HF horn, so would you, if you could and is it a significant ie worthwhile, step up from the 3" Be's?

Thanks
Cooky

[richluvsound]

Cooky,

right behind you as soon as Im back to work .... was thinking a 3 way with the 2435 on HF duty ...
There is a sense of effortlessness about the 4" . I have not heard the JBL - truextent combo , but heard the TAD 4002z on Sam - 9800 horn and the 4003 on the TH 4003 .

I'm enjoying very much the Aleph, tricked out, 30 - 50 Be combo. The detail seems to hang in the air for ever . The sense of space is just beautiful .

I'm very happy with this ,but cant help but wonder how much more I can get out of my music collection with another 1"

Rich

[Guido]

I'm very happy with this ,but cant help but wonder how much more I can get out of my music collection with another 1"
Rich

You'll hear in spring. I hope we find some time :)

Some might be interested that the extremely good -and affordable- Radian 950PB is available in a 1,5" version! Means you can have the 4" experience on a SAM/H9800/H4338 with a BRANDNEW driver for a price you can't resist.

[Robh3606]

Hello Cooky

No I am sticking with what I have. The 2435be and 045be combo on the SAMHF1 horn has made me very happy. At this point in time I can’t see going through another set of measurements, crossover changes and rebuilt networks. Not even considereing the cost of the new diaphrams and cores needed. I have other things I want to try. I am done with the Be drivers for a while. I have my center channel to build and then it’s on to new/old/different things. I would rather use the time to look in new directions than keep clawing for incremental changes/improvements using the same technology.


Rob:)

[richluvsound]

You'll hear in spring. I hope we find some time :)

Some might be interested that the extremely good -and affordable- Radian 950PB is available in a 1,5" version! Means you can have the 4" experience on a SAM/H9800/H4338 with a BRANDNEW driver for a price you can't resist.

Some time in April ? I'll be there when their ready to listen to :applaud:

[Mr. Widget]

My question;
I haven't/cannot get to hear, some 4" Be JBL/Truextent but have in mind 2451/2's+ Be+ SAM1HF horn, so would you, if you could and is it a significant ie worthwhile, step up from the 3" Be's?If I was starting a new project I would absolutely consider this tack... however I guess I agree with Rob's statement:

I would rather use the time to look in new directions than keep clawing for incremental changes/improvements using the same technology. I will likely screw around with new drivers and new approaches at some point, but the stock 1400 Arrays are good enough. I don't feel compelled to screw around with success for an incremental albeit definite improvement... but then I don't drop thousands on wire just to hear a difference either.


Widget

[4313B]

I am a very satisfied user of the 2435 3" Be on a SAM1HF horn-they are sweet and lucid and wonderful.Sounds like a perfectly good reason to eff it all up and try something different then. :rotfl:

[cooky1257]

Interesting comments guys.

Well as the muse had taken me I just had to ask.

I suppose I could always look to improve on the 2235 bass/mid instead:p:p

Cooky

[Guido]

Some might be interested that the extremely good -and affordable- Radian 950PB is available in a 1,5" version! Means you can have the 4" experience on a SAM/H9800/H4338 with a BRANDNEW driver for a price you can't resist.

I forgot to mention that the Truextent fits into this driver.

[4313B]

I suppose I could always look to improve on the 2235 bass/mid instead:p:pThat's probably a more worthwhile endeavor. ME150H, 1500FE, 1500AL...

[cooky1257]

That's probably a more worthwhile endeavor. ME150H, 1500FE, 1500AL...

Thanks, I'll start looking.

[4313B]

Eh, I'm just sorry to hear that the combo you have isn't doing it for you. I can understand the desire for the 4-inch though. G.T. made the swap as soon as he was able to obtain some 476Be's...

[richluvsound]

Thanks, I'll start looking.

I think Pos has some ME150 for sale ....!

[richluvsound]

I forgot to mention that the Truextent fits into this driver.

Even better !


We shall chat about this over a Cigar:D

[Odd]

Will a 2450 be close to a 476Be with Be diaphrams?

[Maron Horonzakz]

Very close..

[pos]

Cooky, I think I read on your british forum that you where now using the 2435 full open without 045?
If that is the case then you could definitely benefit from the 2452H+truextent combo (or radian+truextent, or 2450SL+truextent, but the 2451 would require a redrill of the horn)

[4313B]

Will a 2450 be close to a 476Be with Be diaphrams?Depends on your age, how well you've taken care of your hearing, whether or not life has been kind to your hearing, etc. In some cases I suspect it would be a dead ringer for the real deal.

I had this exact discussion with the design engineer and he said that with a certain core (I believe it was the 2451 but I could be wrong) and the Truextent diaphragm the result would be roughly 85%.

Note that the 476Be is very expensive for JBL to manufacture, hence the need to come up with the 476Mg. JBL has zero interest in offering either driver over the counter despite the fact that they are manufactured by JBL Professional for JBL Consumer. I still have yet to find anyone who has successfully purchased any of these SOTA drivers (1500AL, 435BE, etc) from Harman Japan where they were listed on their website for years. I have no clue why they are even advertised there. :dont-know:

[pos]

I think Pos has some ME150 for sale ....!
true :D

[cooky1257]

Eh, I'm just sorry to hear that the combo you have isn't doing it for you. I can understand the desire for the 4-inch though. G.T. made the swap as soon as he was able to obtain some 476Be's...

Oh the combo is the best I've ever owned it's just you know..
it'll probably pass, I wish I was taller or 2 stone lighter too:rotfl:

It's all GT's fault.

[cooky1257]

Cooky, I think I read on your british forum that you where now using the 2435 full open without 045?
If that is the case then you could definitely benefit from the 2452H+truextent combo (or radian+truextent, or 2450SL+truextent, but the 2451 would require a redrill of the horn)

Thanks Pos yes I'm 2 way/not using the 045's, I knew one of the later 24**'s was on a larger bolt radius thanks for the clarification. I wouldn't want to mod the SAM's.

Cooky

[4313B]

Oh the combo is the best I've ever owned it's just you know..
it'll probably pass, I wish I was taller or 2 stone lighter too:rotfl:

It's all GT's fault.True, but he gets paid to be on the bleeding edge.

[Guido]

Will a 2450 be close to a 476Be with Be diaphrams?

The 2450 is a 1,5 inch driver but with a 2". It can't be used on a 1,5 inch horn without some tricks. The 476Be is a 1,5 inch driver.
The 2450SL Core is very close to the 476Be core. It's also 1,5" and so you can use it on a H9800. H9800 clones are available.
The Bolt circles are also the same on both drivers. Even the backcaps fit each others motor.


I had this exact discussion with the design engineer and he said that with a certain core (I believe it was the 2451 but I could be wrong) and the Truextent diaphragm the result would be roughly 85%.

It's the 2450SL

I can hear no difference.
The main difference I can MEASURE is the copper sleeved pole piece on the 476Be that reduces the rising impedance over 5 kHz.
The HF extension is slightly better on the 476Be.
Not hearable for me :o:

[Guido]

It is very easy and not THAT expensive.

Buy a pair of 2450SL
Have a guy who knows what he is doing install you Truextent dias*
Buy a pair of H9800 clones
Buy a pair of ME150 (they are available from pos, me and even new from JBL)
Buy the crossover developed and made for this combo (some here have the schematic tricked out)
build a pair of nice cabs

... and you are done. K2 Style

* I started measuring THD on each driver I replace diaphragm app. 2 years ago and are still shocked how many need re-alignment. So it's NOT plug and play. I think Widget mentioned this before once.