Anyone know how to check speaker polarity with a multimeter?

[littleangrygiant]

i recently added a 4 channel amp and i need to make sure that i have the polarity right on my speakers. i read on a post somewhere that if you set the mm to volts and put the leads on the speaker terminals (+ to + and - to -) you would be able to tell. it said if the voltage goes neg, then polarity is reversed. that didnt make sense, but i thought id try it. didnt work. always said 0 volts. does that mean play music then put the mm on the terminals while the music is playin? then check if the voltage is pos or neg? all i can find is people sayin put a battery on the terminals, but my speakers are behing the door panels and under the rear deck so i cant see if theyre in or out when the battery is on them. any help? if anyone knows, im sure you guys know.

[Easy E]

You use a battery. Hook positive to postive, and negative and negative. The cone will move out if its hooked up right, if not it will move in meaning the polarity is reversed.

[littleangrygiant]

You use a battery. Hook positive to postive, and negative and negative. The cone will move out if its hooked up right, if not it will move in meaning the polarity is reversed.

yeah. i got that part. but you see, the speakers are covered. inside the door panels, and under the rear deck. i cant see if they move in or out. any more suggestions? thanks

[Easy E]

yeah. i got that part. but you see, the speakers are covered. inside the door panels, and under the rear deck. i cant see if they move in or out. any more suggestions? thanks

Rip open the doors and rear deck ;)

[CVStroker]

You're testing it right, just not reading it right. It will say 0 volts no matter what. It depends on whether is says 0 volts or -0 volts, if it says -0 volts, then the one you have the positive probe touching is the negative wire. Remember, this only works with a digital multimeter, if you have an alalog multimeter (refering to the kind of display) it wont work.

[Easy E]

You're testing it right, just not reading it right. It will say 0 volts no matter what. It depends on whether is says 0 volts or -0 volts, if it says -0 volts, then the one you have the positive probe touching is the negative wire. Remember, this only works with a digital multimeter, if you have an alalog multimeter (refering to the kind of display) it wont work.

Nope will read 0 volts cause its a impedence load not a electric load.