Hi,
I put an ean tremolo circuit inside an old wah wah, so the pedal controls the rate of the effect, but even with the pedal flat the rate is a bit slow.
Please, what part of the circuit have I to modify to speed up the rate?
Thank youù
M.
There might be a bit of resistance left on the pot when it's flat down. Have you tried moving the gear up a cog?
If you have and there's still some resistance on the pot you could make the stop resistor a bit smaller (1K on the runoff schematic). Wire up a couple of crock clips to the board, either side of the 1k, and parallel large value reistors with it to see if you can get the rate up. If it works, calculate the combined resistance and replace the 1K with whatever it is.
You can make the 1u caps smaller to get a faster rate (.68u and some even go for .47u)
thanks!
I've found the runoff schematic you're talking about also, I'll try some of these mods.
BTW, this tremolo has a great sound to my ears,
M.
Changing the 3 x 1uF caps on the phase-shift oscillator to 680nF (0.68uF) is the easiest way to do it. Most people like the 680nF.
Smaller cap value = faster oscillation.
I tried to get them going with .1uf...dohh ten times too small, it oscillated but those frequencies interfered with th guitar...but yupp 'smalling' these a bit will get the speed up...or down...I had three 2.2uf's there as it were and they work just fine and slow.
It seems the slow side with 1uf's fades beyond compensation of the depth pot, at a low speed ~point, with the 2.2uf's slower speeds with greater depth is possible.