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07 grand Cherokee
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Discussion Starter #1 (Edited)
Hello. Can anyone help me out with identifying these subs? I believe they are 8in and the only name on them is HD. I got them from a family friend and they didnt know anything about them.



 

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Welcome here!


If you can get one out, you might find some info on the magnet, or some numbers to look up. If you don't see anything, or just numbers, you can post the numbers and I'll try to dig in. Car stereo is the biggest violator of standards, so there may be no standard numbers to get the information on.



Without any numbers, you can read ohms/DC resistance across the terminals and post that up. It won't be exactly 4 ohm or 8 ohms, because speakers are rated in nominal impedance (AC resistance of the voice coil nominal, because it varies by frequency). The speaker must be unplugged from the wiring while you test.



Also need to know if they are wired in series or parallel as well. Google series/parallel speaker wiring and look at what you have or post picture of all the wire ends and all the wiring if you can.
 
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