Radian diaphragm for 2445

[music2me2]

Hello!

Any experience on using Radian Alu diaphragm on a 2445 or the like?
Can this "mellow" the tone somewhat?

Thanks!

[music2me2]

I have been scouring through these forums, and found some info on this topic already.
Still, being a newbie to horns; I'd be very interested in any views on the 2445J as mid drivers - different diaphragm options (JBL and others, 8- or 16 Ohms etc.).
I know this might sound very naive and perhaps laughable, but, my only reference as far as mid drivers go, is listening to a VOTT system, using 288-8C in round Tractricx - I thought that was great, but restricted funds had me looking for "budget" alternatives to the 288, and the 2445(J) popped up at a reasonable price, and I grabbed them, since I've always been a fan of JBL, having owned several of their speakers in the past: 4350, L300, L100

The system I'm now trying to put together is an 825/A7 with 416-8C and then the 2445 + tweeter (perhaps T35).

I realize that the getting a 2445 to sound like a 288 is not going to happen, and that is not my goal either, but if I can get a smooth sound out of it (i.e. not hard/harsh/tizzy/cold or whatever), I'd be chuffed.
I'd be prepared to do whatever with the 2445 if it yields a smooth sounding performance, so any tips on diaphragms, horns, phase plugs, xovers or mods are greatly appreciated!
Pete

[music2me2]

Better yet, just save your money for some Be diaphragms that will be available in a few months. A pair of these diaphragms will cost about the same as just one complete 2452H-SL (the non-eBay version sold new by JBL Professional).

That sounds interesting - do you know who might be producing these please?

[4313B]

That sounds interesting - do you know who might be producing these please?

The information is available on the Internet:

Truextent brand SSX beryllium compression driver diaphragm datasheet

$790 each for one or two
$745 each for three or more

And there will probably be promotions in the next thirty to sixty days. So get them cheaper at that point.

[music2me2]

These Truextents are very pricey though, if on a strict budget like myself.
The 2445 seems to me to be a very nice driver with huge potential - has anybody successfully experimented with them in terms of frams, or otherwise?

[MartinWolf]

Beryllium diaphragms are now (finally) available for the 2445H/J and a long list of 4" voice coil JBL compression drivers. I saw them at the NAMM show last week in Anaheim. Google on keywords "Truextent SSX".

These are made by Brush Wellman with real beryllium. The beryllium is formed from a rolled foil and not vapor-deposited like the TAD diaphragms. The rolled foil is not fragile like the TAD and does not "shatter".

[music2me2]

Back to my original question: Has anybody tried the Radian aluminium diaphragm in the 2445, and if so; any good?

[djnagle]

Hi Music. I have been using the Radian mylar surround diaphragms in my 2441s for a year now and I would not go back to the origanals. The mylar surround really smooths them out wonderfully without taking away any of the detail. When I first got my diaphragms, 5 of us sat down and, with only one diaphragm installed, A/B the two drivers. I am running them on 350hz Edgarhorns. All 5 of us quickly agreed that the Radian sounded better. Then, a number of months later, cosmos borrowed one of the diaphragms an put it in his 2445. You might want for him to chime in.

[music2me2]

Hi Music. I have been using the Radian mylar surround diaphragms in my 2441s for a year now and I would not go back to the origanals. The mylar surround really smooths them out wonderfully without taking away any of the detail. When I first got my diaphragms, 5 of us sat down and, with only one diaphragm installed, A/B the two drivers. I am running them on 350hz Edgarhorns. All 5 of us quickly agreed that the Radian sounded better. Then, a number of months later, cosmos borrowed one of the diaphragms an put it in his 2445. You might want for him to chime in.

Thanks for that - seems to be a very positive result for the Radians then.

[music2me2]

Since I'm on a strict budget here, I feel sad that these are so costly - can't afford them...simple as that

Would these Beryllium domes be the ultimate diaphragm ever for let's say the 2445?

Will they compare to the TADs?

[cosmos]

I did swap out the stock diaphragm in a pair of 2445J with the Radian 1245-8 phragms that Dennis is using. I would state that the stoc,k diaphragms extended higher, but the Radians sounded fuller in the lower frequencies (crossed at 600 Hz - 18db/oct with active crossover) and smoother.

If I were doing a 3 way, I'd do the Radians. If I were using them in a 2 way, I'd stay with the stock diaphragms, but try to smooth them or use a different driver.. Thus my thread on how to extend the FR and smooth out the 2445s.

Best

Dan

[lgvenable]

cosmos
whats the radian diaphragm part number you're using in the 2445, and how high do they extend?
I'm getting ready to do DIY 4732's for front left, right, & center but have 12 of the 2445's; so I might get one and play with it first.
Larry

[mech986]

I have a few of the 4 inch Radian diaphragms in storage. If anyone needs some, let me know and I'll see which ones I have.

Bart

[music2me2]

Hi Bart,

I'm looking for a pair of Radian 1245 diaphragms (8 & 16 Ohms).

Peter

[dkalsi]

Mech,
I sent you a PM earlier as well. Please let me know if you received it.

Thanks,
D