Re: Car stereo wiring and L+ L- and GND
- From: "Ralph Mowery" <rmowery28146@xxxxxxxxxxxxx>
- Date: Fri, 17 Mar 2006 00:30:46 GMT
<gonzalobriceno@xxxxxxxxx> wrote in message
news:1142482089.745787.249390@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
This question is part of a larger undertaking that currently has led me
back to brush up on very basic electronics. To make a long story short,
I am wiring a stereo plug (ie, red, white, common) into a connector
that has, R+, R-, L+, L- and GND for ground among other things.
My question is, and please pardon such a basic question, why are there
not just L, R and GND? I've seen a buch of instructions on home made
wiring for a stereo plug but quite honestly, I am confused. Can this
even be done in such a case where the inputs are as such? (L-, L+, R-,
R+ and GND I mean accomodating a stereo plug for this setup.
What is the basis behind having +, - and ground?
Without seeing the wiring hook up, here is the best guess. YOu do not hook
either speaker wire to ground. The + and - indicate the phasing of the
signals. Speakers may (should) have marks on them also. This means that
when the sound comes out of the speakers the voice coils move in the correct
direction to reproduce the sound as it was recorded. If the speakers do not
have the marks on them, you can do it yourself with a battery. Hook a
small (low voltage) battery to the speaker terminals and see which way the
cone moves. When two or more speakers are moving the same way, mark one
terminal with a + and hook it to the + of the amplifier output.
.
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