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how to check polarity?...

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Old Mar 24, 2004
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how to check polarity?...

i think i might have mixed up the polarity on one of my front speakers (sounds different now thats why). how do i check it? i dont want to pull the door panel off again.
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Old Mar 24, 2004
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without removing the door is hard...

the battery test is the simple way, but you have to see the driver for that test
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Old Mar 24, 2004
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can you explain the battery test to me? isnt it something like if you touch the speaker wire to the battery and the woofer moves out, its in phase and if it moves in, its out of phase? do i have the right idea? (i'm still learning, A LOT!)
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Old Mar 24, 2004
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use a small battery like a 9 volt or something and connect it to the speaker if it opos out then you have it wired correctly as in + on battery = + on speaker and same for negative side. If is sucks the cone in then you have it wired reverse. Remember to only temporarily connect the battery to the speaker just long enought to make it pop in or out.
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Old Mar 24, 2004
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okay, thats what i was thinking, thanks tfnaaf and ludlam.

i'll hopefully be able to check it tomorrow, it sounds wierd when its balanced, but when i balanced to the left or to the right, it sounds fine, its just centered it sounds funny.
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Old Mar 24, 2004
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I ran into this issue 2 weeks ago installing my Alpine MVR-F340 amp - when I pulled the Poweracoustik out, I didn't pay attention to what was hooked up where. The rears were easy to figure out but the fronts were not. I was in the same boat you were.

I have Monster cable - and I KNOW the printed side is normally used for positive but there was no way to be sure - luckily I was just able to see the underside of my crossover good enough by gently pulling the panel back. Checked the crossover specs in the Boston manual and I was able to verify fairly easily.

Battery test won't work unless you pull the whole (&%^%*^ panel off...and I was also loathe to do it unless it was the last resort, and I'm **** enough about it to where I would have....glad I didn't need to do it.
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Old Mar 25, 2004
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my xover is in the door, so gonna have to pull the door panel off. i can do it in like 30 seconds, its not hard.
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Old Mar 25, 2004
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you can get a speaker popper, its a snap. many shops will have one you can borrow real quick

its got leads out that you hook to + and minus, and make the speaker go "pop, pop, pop, pop, pop, pop..."

the box has a microphone on it and picks up the sgnal, then has a green and red light for in phase or out of phase. its real handy when you are working behind the dash checking polarity of rear deck speakers!
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Old Mar 25, 2004
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Thats slick .... how much are they?
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Old Mar 25, 2004
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no idea
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Old Mar 25, 2004
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any idea what they are called? speaker popper? lol

that is pretty cool, but no way i'm spending more than (checks wallet) $6.00 on it, tax included.
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Old Mar 25, 2004
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ill bet it costs more than that
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Old Mar 25, 2004
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http://www.gibsonteched.com/vmk132.html

is that it? pretty cheap, but i can find out the polarity long before that thing ships.
its cool though.
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Old Mar 25, 2004
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nope, thats not it
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