Re: EMG 18 volt mod safe for other pedals ?
The 18V is the supply voltage for the emg pickups. It bears no relation to the output signal, which is much much lower.
Pedals have no interest in the supply voltage of your pickups. They only want a certain input for their own power supply
Yes and no,
Generally speaking, this isn’t necessarily true in some regards, and depends on many factors. Also let us not forget that amplification is the product of power supply modulation so they are 100% related. When you increase the power supply potential of your active pickups internal amplifier, you also increase the maximum amount of signal swing the amplifier in those pickups is capable of. If the amplification factor of the pickups internal amplifier was slightly limited by its supply voltage before, you all of a sudden have gotten rid of that limiting factor by upping the supply voltage, so the pickups output swing could be potentially higher than before depending on the gain of the internal amplifier, in conjunction to that limiting factor set by its powersupply, if such limiting were present to begin with.
This will have an effect by potentially distorting most pedals, which are designed primarily for -10db instrument level input signals.
While this typically won’t damage most chip based designs, some other discrete devices, and chips may be more sensitive to this. So while the two devices may not share a power supply, there is still a potential associated cause and effect. Some pedal designs may even put in an input clamp for this reason.
I doubt it had much to do with the OP’s case, but it’s still something to consider.
