These basic bass controls were obtained from an article in Electronics Now magazine in February 1995. They are basic passive circuits in (a) basic tone, (b) boost, (c) cut, and (d) flat response.
This circuit is from a 90's documentation. The circuit is simple, as it uses only two transistors, and the...
This unusual amplifier configuration is from 1986. The circuit has a high resting current given the...
This circuit was found in a 1967 Electronic Design and can be adapted to use modern equivalent...