PT2399 isolating LPF 1

[peterg]

I'm building a small amp using the Noisy Cricket circuit and want to incorporate a PT2399 echo/reverb circuit (I'm awaiting the echo/reverb board which I'm sure is based on the Echo circuit in the PT2399 data sheet). I'm using a 3P4T rotary switch to turn the circuits on, switch the amps grit mode on and to turn the echo/reverb on. Since I don't have enough poles/throws to true bypass the echo/circuit I'm wondering if I can bypass the pot that connects pin 14 to 16 on the echo/reverb circuit.

Will this isolate the LPF from the effect? Are there advantages to having the filter before the amp? Any disadvantages?

Reference documents:

[merlinb]

The PCB only has one pot. If it is the 'mix' pot then you can ground the wiper to kill the delay, but if it is the 'delay' pot then no. Doesn't your switch have a SPDT available? In which case you could do a normal bypass (but not true bypass).
 

[peterg]

Metlinb. Thanks! I think the pot is the mix pot. There is the option to add the delay pot. I'll experiment with grounding the mix pot wiper and using the simple bypass as you suggested to see which is better for tone.

[sinthmart]

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