Re: How to determine polarity of speakers
- From: "joe.ker" <joe.ker@xxxxxxxxxxx>
- Date: Thu, 29 Sep 2005 09:54:00 GMT
"Rod" <dontemailme@xxxxxxxxxx> wrote in message
news:2jqmj1lm7vng62r5vsac719228rmi5ppri@xxxxxxxxxx
>I suspect that the 3-way Alpine SPX speakers that I had installed are
> not all in phase. Normally, to test polarity, I'd hook a 9volt battery
> up to the speaker wires normally going into the amp. Each speaker
> should either pop out or pull in, but all should do the same thing,
> assuming positive and negative are hooked up correctly.
>
> HOWEVER, these 3way speakers have not one but two crossovers that like
> to absorb the 9v and prevent the speakers from moving.
>
> How else can I test the polarity? Do I simply need to add more 9volts
> into the equation, and if so, how many, and how many would it take to
> accidentally fry my crossovers?
>
> Thanks!
How is the amp hooked up to the head unit? What brand head unit is it?
I suspect you have the amp hooked to a factory radio and the input may be
out of phase.
The Alpine xovers should have different size connectors for + & - so it
should be hard to hook them up out of phase to an amp.
The easiest way to test if there out of phase is to fade the head unit to
just those speakers. then balance the head unit from left to right.
if the bass increases when you are all the way left or all right and
decreases when balance is in center, then the speakers are out of phase.
.
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- How to determine polarity of speakers
- From: Rod
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