Yes, both. - Mark Kelly - Tweakers' Asylum

Tweakers' Asylum

Tweaks for systems, rooms and Do It Yourself (DIY) help. FAQ.

Yes, both.

In Reply to: Thanks, excellent suggestions posted by tonemaniac on December 22, 2004 at 03:04:48:

Yes, I've worked with both. The main V/T board on my preamp is carbon /kevlar interleave. The subchassis construction on my power amp is multilayer woven kevlar with random glass core. I went with kevlar/glass for the subchassis as I wanted something non-conductive as I have 1100 volts DC floating around in there.
This aside, sonically and aesthetically and everything else - ically (except financially) I prefer the results with the multilayer carbon and hand tuning.
It aint cheap - the chassis for my power amp cost me around $2k altogether.
Regarding your filled epoxies etc - the key here is the propagation velocity through the composite material. Diamond's propagation velocity is the highest of any "bulk" material - only exceeded by nanotubes. Next highest are the other ultrahard ceramics like sapphire. The propagation velocity of the composite is dependent on both the filler and the epoxy. Epoxy is very low - down with the other plastics. Kevlar is not much higher than other plastics so the admixture with kevlar will bring your resonant frequncy right back into the audible spectrum. Of course you will get some damping but I'm not sure that it's an ideal solution.
There is some evidence that boron fibre composites give a high propagation velocity with a degree of internal damping but I have no direct experience with these materials. On paper boron fibre reinforced magnesium looks an ideal material but all the information on it is classified by your government. Apparently the armour on Blackhawks is made of this.

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Follow Ups Full Thread

Topic - constructive insanity chez Tonemaniac - tonemaniac 14:00:46 12/21/04 (10)

You will need to tune it. - Mark Kelly 23:05:10 12/21/04 (4)

Thanks, excellent suggestions - tonemaniac 03:04:48 12/22/04 (3)

Yes, both. - Mark Kelly 03:29:23 12/22/04 (2)

What didn't you like about the C/F clad case ? - tonemaniac 04:54:49 12/22/04 (1)

Clank Clank Clank! - Mark Kelly 14:55:43 12/22/04 (0)

A Fancy Band-Aid - pburant 16:59:16 12/21/04 (4)

boy, I sure wish it was as straightforward as that - tonemaniac 02:41:19 12/22/04 (2)

As for treating aluminum cases... - Wellfed 05:15:24 12/22/04 (0)

speaking of irritations - tonemaniac 03:10:05 12/22/04 (0)

A crude Band-Aid - Al Sekela 21:14:58 12/21/04 (0)

Follow Ups

Yes, both. - Mark Kelly 03:29:23 12/22/04 (2)

What didn't you like about the C/F clad case ? - tonemaniac 04:54:49 12/22/04 (1)

Clank Clank Clank! - Mark Kelly 14:55:43 12/22/04 (0)

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