14 Watt Audio Amplifier


Posted on Apr 9, 2012

The audio amplifier shown below provides 14 watts of power, but can provide much more simply by increasing the power supply voltage. This amp was built in 1975 and has worked reliably ever since. The power amp portion was published in Popular Electronics in the mid-1975s. I added a preamp and bass and treble controls. This amp has extremely low distortion and is relatively insensitive to the choice of components.


14 Watt Audio Amplifier
Click here to download the full size of the above Circuit.

The power amplifier is actually a discrete power op-amp. As such the gain is set by R18/R23. The pre-amp has a voltage gain of 10, for an overall gain of approximately 150. I recommend non-polarized capacitors for C2 and C9, even though the schematic show




Leave Comment

characters left:

New Circuits

.

 


Popular Circuits

Phone Bill Calculator
Ringer-relay
Low-distortion-video-buffer
Dynamic Audio Mixer
Beat-Frequency Audio Generator
supernode dependent voltage source
Electronics Circuit Application: New Vacuum Tube Amplifier
cool chip lt1970 power op amp with current limit
halloween build part 3 full schematic
Audio clipping indicator circuit
Simple NE555 IC Testing Circuit
Analog to Digital Converters



Top