I just built a preamp box with the active acoustic preamp from Gitty and was blown away with the quality of tone,volume,and clarity it produced with piezo's and magnetic pickups. My go to guitar was all acoustic but I wanted to play it live and still keep the acoustic character of the box so I used a 3 string piezo and the preamp through a Blues Jr and it rocks. Now for the question. I would like to build another cigar box preamp but use two preamps (one for the acoustic and one for the electric) but wire them to one output jack so I can EQ and balance volume on two separate guitars to be run to a one amp. Is this possible by wiring to one jack or do I need to add a selector switch between the preamp and output jack or do I need to add capacitors etc. Any advice appreciated.
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Run the output of each preamp through a resister before joining them on the output jack and that should drop any backwards crosstalk between them...anything from 10K to 50K will likely work. See the discussion in this thread...
The preamble already has output capacitors. I would guess they'd work in parallel, but you run the risk of some odd oscillations. BUt, if you take a pot... Any size over 10k would probably work... Wire each preamp outer connector, and the output to the input of the amp...
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Run the output of each preamp through a resister before joining them on the output jack and that should drop any backwards crosstalk between them...anything from 10K to 50K will likely work. See the discussion in this thread...
how-do-we-connect-a-guitar-and-mike-to-one-amp
Use an A/B switch box.
That should work fine...