Xref: utzoo rec.audio:8006 sci.electronics:3699 Path: utzoo!utgpu!water!watmath!onfcanim!dave From: dave@onfcanim.UUCP (Dave Martindale) Newsgroups: rec.audio,sci.electronics Subject: Re: Sony D-10 through car amp Keywords: motor noise (CD motor) Message-ID: <15892@onfcanim.UUCP> Date: 26 Aug 88 15:39:53 GMT References: <2253@uhccux.uhcc.hawaii.edu> <15911@apple.Apple.COM> <183@limbic.UUCP> Reply-To: dave@onfcanim.UUCP (Dave Martindale) Distribution: na Organization: National Film Board / Office national du film, Montreal Lines: 9 In article <183@limbic.UUCP> gil@limbic.UUCP (Gil Kloepfer Jr.) writes: > >I looked at my Sony D-5 player, and if you look at the power connector, you >will see that (at least in mine) the "+" side is the outer conductor, which is >generally connected to the device's chassis and audio ground. Why Sony made >a positive ground unit is beyond me, but it seems like they did. The D-5 is negative ground. It just connects the center pin of the power conductor to ground, rather than the outer contact as you assumed.