Output Relay Delay Audio Amplifier Circuit
This is a simple circuit which I built to one of my audio amplifier projects to control the speaker output relay. The purpose of this circuit is to control the relay which turns on the speaker output relay in the audio amplifier. The idea of the circuit is wait around [...]

Microphone Preamplifier Circuit

Mixer Circuit

Clipping Monitor

Tone Volume Balance

Power Amplifiers

Power Supply
The appearance account of this arrangement are:
* Six absolute microphone amplifiers with up to 60dB accretion (theoretical, not tested). Each approach has an absolute fader and an attenuator to acquiesce affiliation of agreeable instruments which accept line-level outputs (such as synthesizers).
* Mixer to amalgamate all the six [...]

Single Chip Amplifier + Tone Control
This ambit is based on the National Semiconductor LM3876. This accessory is able of carrying as abundant as 56W of connected boilerplate ability into an eight ohm amount with 0.1% THD from 20Hz to 20Khz. Be abiding to accommodate an able calefaction bore for the package.
Use log pots [...]