Audio Schematics | Next Electronics

Based on the classic Baxendall tone control circuit, this design offers a maximum cut and boost of approximately 10 dB at 10 kHz and 50 Hz. Since the controls are passive, the final transistor provides a slight boost. The output...

Minimalist Discrete Hi-Fi Preamp

A preamp designed for the minimalist, and having no frills at all is the design goal for this project. It is designed as a preamp for the Death of Zen (DoZ) Class-A power amp (Project 36), and has very low...

USB Powered mini Amplifier

The circuit is designed as a dual audio power amplifier for use in battery-operated sound players. The TDA2822M specifications include low quiescent current, minimal crossover distortion, a supply voltage as low as 1.8 volts, and a minimum output power of...

Preamp Transmit-Receive Sequencer Circuit

This circuit is beneficial for amateur radio operations in VHF and UHF frequencies, where a mast-mounted antenna preamplifier is employed for reception. The kit manages the transmit-receive (T-R) switching and relay sequencing to prevent high RF levels from being inadvertently...

Equalizer Circuit Operating on Three Bands

The circuit was designed to illustrate the use of a tone control circuit, which adjusts audio signals before they are sent to any output device. The tone control circuit serves as an essential component in audio processing systems, allowing for the...

250mW audio amplifier

This is a simple three-transistor audio amplifier circuit capable of delivering 250 mW to an 8-ohm speaker. Complementary transistors BC337 and BC227 (Q3 and Q2) are utilized as the output pair, while transistor Q1 (BC547) functions as the preamplifier. The...

Mini-box 2W Amplifier

This amplifier was designed to be self-contained in a small loudspeaker box. It can be fed by Walkman, Mini-Disc, iPod, CD players, computers, and similar devices fitted with line or headphone output. Of course, in most cases, you will have...

36 Watt Amplifier circuit with TDA1562Q

This circuit is based on a Philips class-H audio amplifier integrated circuit (IC) and can deliver 36W RMS or 70W music power, all from a 13.8V supply. The Mighty Midget Amplifier is capable of providing approximately 36W RMS continuous power...

16 watt amplifier

This circuit provides 16 watts of amplification. It is built using two LM383 power audio amplifiers. Use suitable heat sinks with the ICs. More: U1 U2 LM383 8 watt audio amplifier IC R1, R3 220 ohm resistor R2, R4 2.2...