Low-cut and Bass controls Output power: 40W into 8 Ohm and 60W into 4 Ohm loads This design adopts a well established circuit topology for the power amplifier, using a single-rail supply of about 60V and capacitor-coupling for the speaker(s). The advantages for a guitar amplifier are the very simple circuitry, even for comparatively high [...]
The Bass Boost section provides two switchable levels of Bass enhancement. The input audio is first low-pass filtered by a second-order LPF, whose cutoff frequency is 100Hz. The LPF is built around IC2C and IC2DThe output of the LPF is given to a MUX based on a CD4052. This mux can choose between ground, an [...]
The picture above shows a circuit board layout giving every option that the MOSFET amplifier will use. This board could be built very easily using “Manhattan Construction” or “dead bug” style construction. I have also built it on mass produced prototype boards from Tanner Electronics. Radio Shack and others have similar prototype boards that can [...]
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