Weber 6S100

General discussion area for tube amps.

Moderators: pompeiisneaks, Colossal

Post Reply
fusionbear
Posts: 478
Joined: Thu Nov 01, 2007 4:42 am
Location: Southern California

Weber 6S100

Post by fusionbear »

I built this and am happy with the tone, but unhappy with the taper of the Master Volume. It almost instantly gets too loud. Any ideas what to do?

Here is the schematic:

http://taweber.powweb.com/store/6s100_schem.jpg

BTW, here is a thread on the build:

http://www.thegearpage.net/board/showth ... p?t=769825
Learning to learn...
paulster
Posts: 1299
Joined: Tue Oct 10, 2006 5:08 pm
Location: Los Angeles & London

Re: Weber 6S100

Post by paulster »

You've got a really big bright cap there on the volume so as soon as the volume's away from the zero point you'll be letting loads of high through the cap.

You could always try disconnecting one end of the bright cap temporarily to see how the volume performs after that. Then you can to decide whether you want a smaller value bright cap and a slightly darker sound at low volume or whether just to attenuate the signal.
dynaman
Posts: 495
Joined: Thu Jul 06, 2006 6:16 pm
Location: Westland, MI

Re: Weber 6S100

Post by dynaman »

"...unhappy with the taper of the master volume."

I'd imagine so. The schem calls out the master pot as being 1ML. I'm guessing the "L" is for linear, not logarithmic. How about replacing it with a 1MA (audio/log taper) like most other master volumes use?
paulster
Posts: 1299
Joined: Tue Oct 10, 2006 5:08 pm
Location: Los Angeles & London

Re: Weber 6S100

Post by paulster »

Okay, just noticed that.

I was thinking it was the gain (Volume) control coming on too quickly, not the Master Volume.

If it's the Master Volume then definitely change the pot for a 1MA audio taper pot as a linear will be dreadful in this context.
fusionbear
Posts: 478
Joined: Thu Nov 01, 2007 4:42 am
Location: Southern California

Re: Weber 6S100

Post by fusionbear »

I changed the pot to a 1M Audio. That did it. Now the taper is more like most amps. I also removed the NFB bypass switch and wire. I use the amp for clean sounds or as a pedal platform. I seriously doubt I would ever use the NFB bypass. Now I am a happier camper... :D
Learning to learn...
User avatar
M Fowler
Posts: 14036
Joined: Wed Jan 16, 2008 2:19 am
Location: Walcott ND

Re: Weber 6S100

Post by M Fowler »

Hey great news glad the guys noticed the 1ML pot I never noticed that before.
Post Reply