I'm in the final stages of a stereo LM1875 build and my enclosure (extruded aluminum) arrived today. After drilling the back plate and attaching the speaker terminals and RCA inputs, I realized the plate was metal so I now have the issue of my speaker signal grounding to the RCA input ground. This will obviously connect to the chassis ground as well. Short of making a new back plate out of Acrylic, any ideas on isolating the terminals and RCA input?
I usually build power amps with the RCAs screwed right into the panel, and the chassis signal ground point to a screw halfway between them. The speaker jacks must be isolated, but any normal bananas would be.
For preamps the RCAs must be floated and wired to ground. At least that's what I've found necessary for best performance.
For preamps the RCAs must be floated and wired to ground. At least that's what I've found necessary for best performance.
I suspect that this will give very good results.I usually build power amps with the RCAs screwed right into the panel, and the chassis signal ground point to a screw halfway between them.
It's about time I tried it!
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