Hoffman Amplifiers Tube Amplifier Forum
Amp Stuff => EZ Board postings => Topic started by: Geezer on June 17, 2005, 09:12:14 pm
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Hoffman Amplifiers
> Tube Amp Building - Tweaks - Repairs
> Tone stack - Treble / Bass
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LooseChange
Senior tube assistant
Posts: 206
(2/15/04 8:39 am)
Tone stack - Treble / Bass
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I have a standard tone stack setup.. 110K, 250p,.022mf, .022mf and 2 pots - 250K treble and bass. The treble pot has very little effect until I get to about "7". I want it to get a little darker as I turn it back.
Got any good ideas out there on changing values of the pots of caps?? Thanks, Dan
Leevi
Junior tube assistant
Posts: 103
(2/15/04 12:31 pm)
Tone stack
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Dan,
Go to the following location and download Tone stack software (free). It easy to use and very good tool for planning/modifying tone stacks.
/Leevi
www.duncanamps.com/software.html
LooseChange
Senior tube assistant
Posts: 207
(2/15/04 12:51 pm)
Re: Tone stack
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I got that. Put all sorts of values in. What TSC illustrates and what really happens in the amp can easily be 2 different things. In my case I can't seem to get the tone control to cut enough. That's it. Thanks!
Lucid Alice
Senior tube assistant
Posts: 159
(2/15/04 11:06 pm)
Re: Tone stack
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When you do a 2 pot tone you use a fixed resistor to ground off the bass pot in place of the mid control. What value do you have there? The mid in a fender circuit is usually a 10K pot. I don't know if toying with this value will help you or not.
LooseChange
Senior tube assistant
Posts: 208
(2/16/04 6:38 pm)
Re: Tone stack
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I want to get a Marshall dip in mids so I have zero ohms. Direct to ground.
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