Rerurn to Romy the Cat's Site
In the Forum: Horn-Loaded Speakers
In the Thread: The African compression electromagnet drivers?
Post Subject: ApplicationPosted by Paul S on: 11/20/2013
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Kerry, from what you have said so far, I am not surprised that you have gone whole-hog digital. I see that yours is an HT system. The first thing anyone here would say is, physically time-align your HF, although I suppose you "could" do that with DEQ/group delay...
Yes, I saw the photo of your paper diaphragm, and I would say that if you want to mess with it then adjust/play with the edge damping with clamping and/or various doping materials and methods before you bother with leather, although leather would certainly change the sound. Haralanov is the local expert on this.
I'm pretty sure the early Cogent diaphragms I heard were fiberglass/resin, not carbon fiber. The CF could possibly improve the strength/weight ratio somewhat, and it would change the damping, for whatever that would be worth. Again, the units I've heard sounded very nice indeed over a very limited bandwidth, driven by their SETs, listening to fairly simple music.
I never owned 375's, but I sure wanted to, for many years. For consumer applications, JBL always hooked them up to their "lenses". Very smooth, even response compared to any other drivers of the day. I've never heard them in a fast, simple horn, but I know the JBL engineers did tweak their drivers, depending on the "application", and to my knowledge they never used turned wooden horns nor optimized their drivers for them, like we do now.
The dream (with any driver...) is to have a useful octave to "spare" on either side of the X/Os...
Best regards,
Paul SRerurn to Romy the Cat's Site