I have built several Gainclones. The most recent being an LM3875 (build details on Decibel Dungeon) as I wanted to get as close to the original Gaincard as possible)
DecDun uses 2 423K resistors in Parallel to get about 211k (used in parallel to increase the power rating). I in advertantly wired them in series and got massive gain, but something I found very likeable. I corrected my mistake and the amp sounded great, but a little poilte in comparison. I have put some connectors in so that I can swap the resistors in and out easliy.
The DecDun LM3886 uses 270k
At the moment I am using 390k whcih I think sounds great.
There is so much variety of values I have seen on different layouts for the both the LM3886 and LM3875, 22k, 100k, 47k etc
I am learning quickly, but wondered if anyone could tell me why some specify low values, and some high ?
Is there an optimum, or is it personal preference.
DecDun uses 2 423K resistors in Parallel to get about 211k (used in parallel to increase the power rating). I in advertantly wired them in series and got massive gain, but something I found very likeable. I corrected my mistake and the amp sounded great, but a little poilte in comparison. I have put some connectors in so that I can swap the resistors in and out easliy.
The DecDun LM3886 uses 270k
At the moment I am using 390k whcih I think sounds great.
There is so much variety of values I have seen on different layouts for the both the LM3886 and LM3875, 22k, 100k, 47k etc
I am learning quickly, but wondered if anyone could tell me why some specify low values, and some high ?
Is there an optimum, or is it personal preference.