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In the Forum: Melquiades Amplifier
In the Thread: 6 Channel Version of Super Melquiades

Post Subject: Upperbass crossoverPosted by anthony on: 12/8/2014

Romy, I appreciate that this is an old thread now and that you may not remember everything from your time developing these amplifiers, but I have a (hopefully) simple question about the upperbass crossover in the schematic above. All other channels have crossovers that are rather straight forward: bass is a low pass RC filter; Fundamentals is a RCL bandpass filter; MF is RL high pass filter; HF is a third order T Section high pass filter; but the Upperbass Channel as I read it is a RC low pass filter only (bandpass is required) within the first stage bias. Are you relying on the coupling cap (0.022uF) to act as your high pass filter for Upperbass?

Regards,

Anthony

PS: I am a newcomer to amplifier circuits, but several things have fallen into place reading through your site, and I much appreciate your efforts in making this all public.

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