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Original Message
0.1uf is the right value.
Posted by Ralph on January 5, 2016 at 11:10:41:
While you do go to 1Hz with 0.22, they don't sound as good otherwise, and with the 0.1 uf units, the squarewave tilt at 20Hz is unmeasurable. This means no phase shift at 20Hz, which is how you get impact.
Increasing the value will mess with the timing constants in the circuit which will increase the IMD.