speaker polarity

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ice32

Copper - Posts: 116

Joined: June 12, 2007

Location: Australia

Posted: August 27, 2007 at 11:16 PM / IP Logged

Hey all,

i'm replacing the front speakers in my car and i'm trying to work out which speaker lead is positive and negative, is there any easy way of testing these as they are not marked?

any advice would be great, thanks

dwarren

Platinum - Nominee - Posts: 1,811

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Joined: December 03, 2004

Location: California, United States

Posted: August 27, 2007 at 11:22 PM / IP Logged

Do you have the original speakers with the plugs? If so, use a nine volt battery and "pop" the speaker and note which way the cone moves based on which wires from the battery ( +, _ ) are hooked up.

Other wise hook a speaker up, and look/feel which way the cone is moving primarily.

Perhaps you could locate a wiring diagram. There is great database on this site.

i am an idiot

Platinum - Posts: 13,668

This member consistently provides reliable information

Joined: September 21, 2006

Location: Louisiana, United States

Posted: August 28, 2007 at 7:10 AM / IP Logged

WOW, I never knew you could see/feel the phasing of a speaker.

sarcomax

Copper - Posts: 276

Joined: November 09, 2005

Location: California, United States

Posted: August 28, 2007 at 10:56 AM / IP Logged

You must become one with the speaker, just be careful.... If you become one with an out of phase speaker, then you too will be out of phase... speaker polarity -- posted image. If you do the connect the speaker and watch for polarity, make sure that you use something that simulates the nine volt battery pop. Track one of off the Square Batt's debut CD "Gotta test that phase" is good because of the 9 volt battery solo at the begining. Kidding of course.

Something with just a kick drum will work, but please save yourself time and headaches and search for the diagram, or give us the info and we will do our best to get the info for you.

ice32

Copper - Posts: 116

Joined: June 12, 2007

Location: Australia

Posted: August 29, 2007 at 8:50 PM / IP Logged

Hey guys,

its a long story, but the general gist is, i replaced the head unit and wired up the wires to a pioneer harness then changed the speakers in the front, they seem to have burnt out or just aren't getting enough power, i rechecked the wiring after a few days of running it the way i started with and after further testing realised they where out of phase, so i reversed the wiring to what i assumed was correct, and they run now but produce little sound, so i bought a set of new speakers to replace them, and i don't wanna make the same mistake twice, so i was wondering if there was anyway i could use say a DMM to measure which was positive and negative wires, as i'm not sure the harness kept the original wires the same,therefor making a wiring diagram useless.

i did the speaker pop with the battery, so i know which is positive and negative on the speaker, i'm looking for a way to find out which is positive and negative on the car end, without having to rewire it so i no for sure which is which. will it wreck the speaker if its wired in reverse phase for a few mins?

Is the only way to truly test that the speaker is wired right to feel which way its going?

thanks

chris.

i am an idiot

Platinum - Posts: 13,668

Joined: September 21, 2006

Location: Louisiana, United States

Posted: August 29, 2007 at 9:30 PM / IP Logged

wiring the speaker out of phase for a few minuter or a few years will not hurt the speaker at all. The only thing it will hurt is the quality of sound.

ice32

Copper - Posts: 116

Joined: June 12, 2007

Location: Australia

Posted: August 29, 2007 at 9:34 PM / IP Logged

for good? or just why its wired out of phase?

sarcomax

Copper - Posts: 276

Joined: November 09, 2005

Location: California, United States

Posted: August 30, 2007 at 10:43 AM / IP Logged

The sound will only be hurt while the speaker is out of phase. The speaker will never be damaged just by wiring it up backwards. If you don't believe us, take your car to a shop and have someone hook it up for you.

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speaker polarity

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