Sourround: Sound Amplifier

Easy to build Gun Sound Effects generator kits, also inludes several different sounds and tunes.

PCB plans and circuit diagram (schematic) for what appears to be an extremely nice 100 watt guitar amplifier. Includes preamplifier and power amplifier circuit diagram and PCBs

1 Watt Audio Amplifier. 8 Ohms impedance. 20 Hz to 20 kHz. Small, few components.

This high gain earphones amplifier electronic circuit has a microphone, the sound from which it amplifies by a very high level so you can listen things to with lower volume easily.

Easy to build sound effect generator kits, inludes several different sounds and tunes.

The circuit is a gem; a TDA 1554 Integrated Circuit is used to produce an amplifier that will output up to 22 watts per channel with distortion typically not in excess of 0.1% thd. Sound quality is very, very high. Originally intended for use in an automo

An extremely good stereo tube amplifier which produces 90Wrms per channel.

MicroStrip 2.3 GHz (GigaHertz) RF amplifier with 1 Watt RF output power.

This audio amplifier electronic circuit uses MOSFET transistors to create more than 25 Watts output power. Uses IRF530 and IRF9530 MOSFET transistors.

Describes the schematic (circuit diagram) and PCB (Printed Circuit Board) for a cheap 100-150 Watt audio amplifier with few components.

Amplifier circuit for electret microphones (condenser microphones). Amplifier the audio signals picked up by the electret microphone, using 741 op-amp and a 2N2222 transistor.

Easy to build sound effect generator kits, inludes several different sounds and tunes.

2 channel (Stereo) Audio Amplifier with 1 watt per channel.

Extremely useful electronic circuit capable of producing a variety of cool sound effects.

This simple stereo audio amplifier will amplify audio for your low-medium impedance headphones and give you left/right balance control

Easy to build sound effect generator kits, inludes several different sounds and tunes.

High quality 25 watt audio amplifier. Combining 2 would give a 50 watt stereo amplifier.

Circuit diagram for an AM radio antenna preamplifier that amplifiers the signal before it get to the AM receiver, thus making the AM radio signals stronger for better reception.

An electronic circuit that uses a 556 (Dual timer) IC to produce a two-tone train horn sound effect. Equivalent circuit using two 555 timers (single timers) is given.

This page links to two electronic circuits. Once circuit produces emergency siren noises (police, fire, ambulance), and the other is a chime type sound effect.

Amplify tiny audio signals fifty times with this electronic kit, and deliver them to a power amplifier cleanly and undistorted. AGC (automatic gain control) eliminates distortion. This circuit is useful in boosting the output from tape heads, microphones