Stereo Pre-amp with Volume and Tone Control

Stereo Pre-amp with Volume and Tone Control
This is the circuit diagram of stereo pre-amp with volume and tone control. When using one of our amplifiers (big or small), you always need a volume control and preferably also a tone control. This circuit available in kit. This circuit operated with 12V symmetrical/dual polarity power supply. (more…)

350 Studio Amplifier Circuit Scheme and PCB Layout

350 Studio Amplifier Circuit Scheme and PCB Layout
Above scheme is the circuit diagram of 350 studio amplifier uses 4 pairs of transistor MJL21193 and MJL21194 as the main components for this circuit. This circuit requires symmetrical power supply to work. The scheme and PCB layout provided here is for single channel (mono) application, build two similar circuit for stereo application. (more…)

Car Subwoofer Amplifier with STK IC

Car Subwoofer Amplifier with STK IC
This is a commonly used audio power amplifier can be used as car subwoofer amplifier since this circuit uses asymmetrical power supply to work. 24V lead acid battery (car accumulator) should be great for this subwoofer amplifier. Simple design, low cost and easy to build are the advantages of this amplifier circuit which capable to deliver about 20W power audio output, or course it's enough for the "room" of cars. Take a note that heatsink is required to prevent

1000W Power Audio Amplifier

1000W Power Audio Amplifier
This is 1000W power amplifier circuit built using many power transistors. The following scheme diagram is used for single/mono channel only, you may build two same circuit for stereo audio system. Circuit Diagram: The power supply needed for this circuit should be 10A minimum single channel and 20A for stereo channel. It uses symmetrical power supply (dual polarity) with recommended voltage is 63V. (more…)

200W Mono / Stereo Power Amplifier using TDA1514A

200W Mono / Stereo Power Amplifier using TDA1514A
This is circuit design of 200W mono / stereo power amplifier using TDA1514A. This circuit support mono and stereo channel. Mono channel uses bridge configuration, so the mono choice will be give power output by twice than stereo choice. A symetrical power supply (dual polarity) is required to powered this circuit. Power supply voltage (+) 28VDC and (-) 28VDC max. (more…)