by TomMcNally » Mon Mar 19, 2007 5:35 am
Hi Lee -
The get*set*go's are dead quiet with ear next to speaker. My way of thinking is this ... keep the input wires, which are low level, away from anything ... you'll see that in the pictures. Speaker leads don't pick up hum, so it doesn't matter if they are close to AC wires, BUT they can radiate audio, so they need to be kept away from anything that can pickup audio - like input and grid leeads. You'll see that the AC wires are all twisted, which is a hum reducing technique. The AC wires are in the back of the amp, which is the power supply, which isn't affected by AC.
Lead dress and grounding are very important, AC lines should be twisted, and kept away from inputs, attention needs to be paid to every detail. Do you amps hum when inputs are shorted and nothing else is connected ?