More than a decade since the original publication by audioXpress, many readers still actively search for information and share the schematics of this OTL tube project. Tim Mellow's design explores a different output stage using a novel combination of local feedback and current drive in order to achieve good symmetry and cancellation of even harmonics. This article was originally published in audioXpress, February 2010.
DIY 600 Watt Amplifier With Old Computer SMPS: Hey! everyone My name is Steve . Today i'm going to show you How to make a 600 watt amplifier With Computer Power Supply Click Here to See The Video Let's Start
Gainclone amplifiers have VERY few components and this one is based on the National Semiconductor LM3875 IC. The PCBs and components are very simple and quick to make, only took about 20 mins to assemble both amps and rectifier board. DC offset was about 80mV on one channel and about 40mV on the other. I used the optional Ci capacitor in the national datasheet for the IC which reduced it to between 0-4mV: This is the capacitor I chose, its an Elna Starget (expensive). The case was MUCH more…
This is a bass treble controller circuit. this circuit needs to control the sound quality. every amplifier needs this circuit to control the bass and to control the treble. There is no pre-amplifier in this circuit. if we use a pre-amplifier then it will be good. it’s a mono circuit. if we need stereo then we have to use 2 circuits to make stereo. if we don’t use this circuit for our amplifier then we will get raw sound. that sound will be not good to hear.