100W power amplifier - a welcome boost to stereo

4-18 - elektor april 1982 100 W power amplifie 100W power amplifier a welcome boost to stereo This 100 W power amplifier design follows a well-beaten, reliable track, without compromising the output power or distortion. It can be used Output power amplifiers (or slaves a! they are known in the music world) ail not only fun to build, but can bE adapted to suit anyone"s persona requirements. With the aid of numerou" interesting suggestions made by readers a set of parameters for the "ideal" power amplifier were drawn up: • It must deliver 100W (into 4 E2 load), • The distortion must not exceed 0.1% at 100W (even at 20 kHz!). • The power bandwidth should be ex tensive. • It must be "short" proof, for the pro. tection of the output transistors. • The power supply must be symmetri- cal, so that no electrolytic capacitors are needed in the output stage. • Only standard, easily available com- ponents should be used. • Construction and calibration must bE straightforward. ...