BOSS GE-7 demystified (SPICE Simulation of the whole circuit in LTspice XVII)

[garcho]

Gives new meaning to "should have just used a 555"

[iainpunk]

didn't the original Atari Punk Console/Stepped Tone Generator directly drive a little speaker? its supposed to be able to put out up to 1/5th Ampere., i read somewhere it was mainly designed that way to drive gates of power mosfets ^{[citation needed]}
i might try that out with my 555 fuzz pedal directly in to my 16ohm cabinet, using a 30 ohm resistor to lower the current.
should give about 0.6W of power to the cabinet... 0.6 watts of pure squarewave/pwm/chaos goodness

cheers

The 555 squarewave output from the Atari Punk Consol will drive a teeny tiny speaker at least. I've hooked one up to a 1.5 inch speaker. Not sure how large you could go.

bigger speaker, bigger efficiency.
i drove my 4x12 with 0.45 watt quite a long time and it was a good volume to practice in the evening, just enough to hear myself over the TV downstairs. (we have quite a bad sound isolation between my room and the living room.)
cheers