Beryllium upgrade for JBL compression

[Elac310]

@Bruno and more10

The reason why I asked is that I've tried a 4" Be diaphragm with flat surround in my 2445.
I would now like to try 4" Be with diamond pattern, which I know from my original JBL 2445 diaph's.

I understand JBL do not sell their 4" Be and in any event, they might not fit into the 2445. Hence my interest in anyone else doing such dias.
If anyone has a tip...

[ivica]

@Bruno and more10 The reason why I asked is that I've tried a 4" Be diaphragm with flat surround in my 2445. I would now like to try 4" Be with diamond pattern, which I know from my original JBL 2445 diaph's. I understand JBL do not sell their 4" Be and in any event, they might not fit into the 2445. Hence my interest in anyone else doing such dias. If anyone has a tip...

Hi Elac310,

I have measured 2445 with the original Ti-no-rib diaphragm, and Be-(Truextent), with my 2"-horn JAN45-2
It is visible that the 'ringing' (not smoothed curve) of Ti diaphragm is more pronounced then Be.
Even Be diaphragm has several dB larger output from 3kHz to 10kHz.
But with Ti diaphragm almost 20kHz can be reached.

Reagards Ivica

[ivica]

Just as an info:

Truextent® Is Introducing A New Metal Matrix Composite (MMC) Dome and cone Material:
http://materion.com/TruextentNewProducts
"..TF-25™ is a new proprietary acoustic material from Materion that delivers superior performance over current materials. Available at a price point lower than our Truextent Genuine Beryllium material, our new TF-25 material has been developed to satisfy the demand for premium performance at a reduced cost....."

But we have to what would be the real consequence on the market

regards
ivica

[baldrick]

Anyonw know what is the dirrenece between the "old" Truextent Beryllium and the new BeX version?

[Mr. Widget]

Anyonw know what is the dirrenece between the "old" Truextent Beryllium and the new BeX version?

See post #15 in this thread.


Widget

[baldrick]

Thank you Widget!!

[Champster]

I thought this was a pretty important quote from the press release.

"Finally, we compare the new Truextent TF-25 dome to one made from Truextent Genuine Beryllium. As expected, the Genuine Beryllium dome out-performs the TF-25 dome."

Of course, the cost is lower for the TF-25, but if you're out for all out performance, the Be is still King.

[brettMc]

Hi All,

was there ever a consensus arrived at on beryllium upgrades to the ti tweeter?

i have a pair of 4312as I am attempting to upgrade.

thanks,
brett