bobkatz Posted August 29, 2010 Report Share Posted August 29, 2010 When I said that "Gilmore" may believe in floating the input RCAs it may actually be Justin, as that's how HeadAmp currently wires up its RCA input jacks on the KGSS. Anyway, I switched to grounding all input connectors directly to chassis, which includes XLRs, always ground pin 1 to chassis. This avoids the famous "pin 1 problem" outlined in a famous article from the JAES by Neil Muncy, reprinted in their grounding issue, which has sold out about 10 times. It's available as a reprint, highly recommended. Years ago I built an A/D converter with RCA inputs which I had floated from chassis. Without changing a single circuit, I removed the teflon washers, grounded the jacks to chassis, and the noise floor went down about 10 dB! Lots of RFI floating around in there! Quote Link to comment Share on other sites More sharing options...
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