Hoffman Amplifiers Tube Amplifier Forum

Amp Stuff => Tube Amp Building - Tweaks - Repairs => Topic started by: warioblast on August 25, 2017, 09:23:13 pm

Title: Dumb question about Top Hat amps
Post by: warioblast on August 25, 2017, 09:23:13 pm

(http://img.photobucket.com/albums/v293/frankencat/Amps/Internals2.jpg)
(http://cfile8.uf.tistory.com/image/1826D44F4ECF0AA8127365)

What's that grey cloth for ?

Title: Re: Dumb question about Top Hat amps
Post by: MFowler on August 26, 2017, 08:01:12 am

Spaghetti tubing to insulate bare wire/component runs.

Title: Re: Dumb question about Top Hat amps
Post by: John on August 26, 2017, 10:21:21 am

He's asking about the grey cloth.

Title: Re: Dumb question about Top Hat amps
Post by: Glenn on August 26, 2017, 11:07:16 am

Maybe the cloth is there because the components are laying on near the chassis and this would reduce any vibrations
Issue with parts?
Or maybe someone did it so we would say "what's up with That"?  :icon_biggrin:

Title: Re: Dumb question about Top Hat amps
Post by: MFowler on August 27, 2017, 08:41:54 am

I noticed that gray matt or felt like material in a TopHat amp I was poking around in and found no reason for it and it most likely will absorb moisture.

Title: Re: Dumb question about Top Hat amps
Post by: CraigB on August 27, 2017, 07:24:34 pm

Doesn't look like any contact points would be affected even if it sucked some moisture.  I would've picked some other material though that couldn't hold moisture in it, maybe some soft rubber or something.

Title: Re: Dumb question about Top Hat amps
Post by: purpletele on August 28, 2017, 10:19:34 am

An official response on the felt from the creator.


vibration damper for the wires and to deaden the chassis some from hi freq feedback back into the wires
Brian Gerhard
919-817-5614 10-6pm EST M-Sat

Title: Re: Dumb question about Top Hat amps
Post by: warioblast on August 28, 2017, 01:51:07 pm

Cool, thx  :wink:

Title: Re: Dumb question about Top Hat amps
Post by: shooter on August 28, 2017, 06:36:26 pm

put a little gun oil on the felt and it'll never rust :icon_biggrin: