• View JPEG images of a completed unit.
• Materials list and some prices (of unit built in 1992)
  
  
• Data: National Semiconductor LM12CLK "80W Operational Amplifier". The Application Notes (PDF) have a wealth of information on features of this circuit (EG: supply bypassing, output clamping diodes, reactive loading protection, heat sinking).
  
  
• If you are really wanting to build an amplifier, take a look also at National Semiconductor LM3886 "High-Performance 68W Audio Power Amplifier with Mute". Looks like good bang for the buck. (Thanks, Charlie.)
  
  
• A quick review of the the basic op-amp circuits...

Here are some sites about fundamentals and usage of operational amplifiers (op-amps): Design Guidelines for Op Amp Audio Preamplifier Circuits Introduction to Op-Amps 1 All About Circuits, vol. 3, chapter 8 Operational Amplifiers (Northwestern U.)

Last tinkered with September 15, 2007 - R. A. Booty Return to Bob's Audio Index.