Dual Gang Potentiometer Questions

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RockinRocket
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Dual Gang Potentiometer Questions

Post by RockinRocket »

I am thinking about building a 18 watt lite again and am hoping I can keep the head small again. I was thinking two input, vol and tone. Input one would do a parallel normal channel in V1 and input two would do a cascaded hot rod with the lite 2 tremolos tone stack in v2. The dual gang potentiometer would allow the two different tone stack configurations separate and just run the two channels into the two PI caps.

Would running two channels into dual gang potentiometer cause noise or other unwanted problems?

Just a thought I had that might be simple and useable.
Stevem
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Re: Dual Gang Potentiometer Questions

Post by Stevem »

It may if the signals are in phase with each other, can`t say for sure!
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Re: Dual Gang Potentiometer Questions

Post by martin manning »

A schematic is worth a thousand words...
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M Fowler
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Re: Dual Gang Potentiometer Questions

Post by M Fowler »

Talking about dual gang pots is the dual pot in this amp being wired reversed so when you turn up the volume it is engaging modest treble as the volume increases?
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Structo
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Re: Dual Gang Potentiometer Questions

Post by Structo »

RockinRocket wrote:I am thinking about building a 18 watt lite again and am hoping I can keep the head small again. I was thinking two input, vol and tone. Input one would do a parallel normal channel in V1 and input two would do a cascaded hot rod with the lite 2 tremolos tone stack in v2. The dual gang potentiometer would allow the two different tone stack configurations separate and just run the two channels into the two PI caps.

Would running two channels into dual gang potentiometer cause noise or other unwanted problems?

Just a thought I had that might be simple and useable.
Are you talking about a dual concentric pot?
So you can adjust each pot individually?
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pops
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Re: Dual Gang Potentiometer Questions

Post by pops »

I have used dual concentric pots for tone and volume with no problems, they are as shielded as a regular pot.
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Structo
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Re: Dual Gang Potentiometer Questions

Post by Structo »

Understood, but it is unclear what type of pot he was using.
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RockinRocket
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Re: Dual Gang Potentiometer Questions

Post by RockinRocket »

Structo wrote: Are you talking about a dual concentric pot?
So you can adjust each pot individually?
No not a concentric pot. Im not to familiar with dual gang pots. But it was my understanding that a dual gang pot turns two separate pots with one shaft. Simply merging the normal channel parallel v1 to the first pots of Vol/Tone and channel two (cascaded)to the second pots. The two channels would be out of phase. Completely separate from each other, other than sharing tone/vol knobs for simplicity.

Id still be able to use a A/B/Y box to switch channels or to combine them because they are out of phase. Obviously where you set the tone/vol is going to have to work for both channels in a live situation. Even if not wanting to A/B/Y still have that second channel to mess around with.

Im just interested in keeping the amp simple. While having more versatility than appears. Two inputs and a vol/tone. The two inputs being normal channel and the other being a simple hot rod cascaded.
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