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bush, the boards are double sided tinned copper on fiberglass, they are thicker than i had anticipated,
i never bought a bias circuit but i remember somebody posting a pic of the psftech board, they were basic, i have not played with a circuit like that since the late 80's,
the active circuit works MUCH better than any passive system i ever saw,

as peakaboo said it would be wise to test your circuit before you stick it in an amplifier, i would clamp the output with a large diode to ground so you dont accidentally smoke the base emitter junctions.

[QUOTE="bob85, post: 168342, member: 18"] bush, the boards are double sided tinned copper on fiberglass, they are thicker than i had anticipated, i never bought a bias circuit but i remember somebody posting a pic of the psftech board, they were basic, i have not played with a circuit like that since the late 80's, the active circuit works MUCH better than any passive system i ever saw, as peakaboo said it would be wise to test your circuit before you stick it in an amplifier, i would clamp the output with a large diode to ground so you dont accidentally smoke the base emitter junctions. [/QUOTE]

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