Getting into making my own pedals and a friend asked me if I can building him a chorus. I was going to use the Cepheid Chorus PCB and was wondering if there was any parts I could swap out to make it more suited to bass? Thanks in advance, I'm already enjoying the building process.
The input HPF is below 10Hz, and the output should be even lower on most cases, so the full signal goes through.
The only consideration to avoid low frequency artifacts (the usual rumble) would be to modify the RC HPF (High Pass Filter) before the delay line:
This cuts off the lows at 48Hz (@ -6dB/oct).
The usual mod online is to change the cap to 12n, to change that frequency to 133Hz:
I would personally try values from 12n down to 2n2, just because I prefer higher cutoff frequencies on bass chorus. 2n2 takes the cutoff freq up to 723Hz.
Maybe even a 10nF cap and change the R16 to a 15k resistor and a 250k pot in series. The pot will control the frequency. R min (15k) would cutoff at about 1kHz, and R max (265k) it would go down to 60Hz.
I would use pins 2 and 3 of an ANTI-LOG pot, so that the pot controls the cutoff frequency, and pot at 100% gives the higher frequency.
But you can also have it the other way if you use pins 1 and 2 of a LOG pot. It also makes sense for some, because lower cutoff frequency means more signal passing though, and it will give you more signal (lows) at max.
