locky said:I have ordered the AMP 1 from 41hz as I wanted the extra power to drive 85db speakers. However, I am confused about the power supply required. Can anyone explain to a beginner what is needed for the +-30V supply? ie. Can I get hold of an external power supply/transformer or does something need to be constructed - if so what? and any idea where parts etc... can be sourced from in the UK?
Wayne1 said:You will need a power cord and/or inlet to the chassis. Fuse holder. Transformer of 300VA with 22 VAC center tapped. Rectifier bridge. Smoothing power supply capacitors of about 10,000 uF @ 50 volts.
You will also need a 5 volt regulator and the associated parts to make one up.
The 22 VAC transformer @ 300VA seems to be a bit of a rare bird. I have only found one, which is made by Plitron. Cost including shipping to CO is about $100.00