GoodSoundClub - Romy the Cat's Audio Site

In the Forum: Horn-Loaded Speakers
In the Thread: The African compression electromagnet drivers?

Post Subject: Paper diaphragmPosted by Kerry Brown on: 11/20/2013

Hi Paul,
The Cogent diaphragm I have seen pictures of was woven carbon fiber with a leather outer surround. I have never listened to a Cogent 1428 but they must sound very good, at least Bill Woods and Bruce Edgar say so.
Besides their overall ultra clear and natural 'sound' the B&Cs big advantage over most compression drivers is its low frequency extension. My 375s had weak response near the 500 Hz crossover point I use, but the DCM50s are very strong.
My system is 4-way using 2x DEQX HDP-4 processors; 2xNuForce mono amps on the midrange horns and 6 x channels of a 7-channel NuForce HT amp that uses the same circuit.
The DEQX processors function as crossovers, speaker 'correction', room correction devices and equalizers.
My bass horns are 80 Hz straight Edgar horns, tweeters are HiVi slot-loaded planar magnetics and I run a pair of Edgar Seismic Subs.
There's a photo of my system attached to this post. Politically incorrect, but it sounds good.
A leather suspension could be rigged up I guess but I like the B&C paper diaphragms as they are. Why fix it if it ain't broke ?
By the way, did you open the attachment on my last post of a photo of the B&C diaphragm ? Doesn't seem practical to modify it, you'd probably have to start from scratch.
Anyway, I was not exaggerating the major step up in sound quality of the midrange horns in my system vs. any others I have tried. I think it's a real breakthrough driver. Instruments and voices just sound way more real with the DCM50.
I'm curious if any other club members own the DCM50, or know anyone who uses them. I wonder if anybody else is as stoked on them as I am.

Rerurn to Romy the Cat's Site