Buying a used sub local? what to look for

[dadydolas 10+ year member]

Please list things to check. How to check with deatails.

Thanks

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[1rockford1 5,000+ posts]

u wana smell the coils and see how they smell burnt = no good. you need to know if there daul 1 ohm, dual 2 ohm dual 4 ohm or single voice coil and check it with a multi meter. make sure u have the sub on a flat surface when u check cuz if its on a uneven surface it could throw it off a tad. feel the sub push down on it if its stiff or lose. if it makes a odd noise like rubbing thats bad. and dont buy it or less u check it out. even if u have to free air it for a few secs do so. good luck

 

[dadydolas 10+ year member]

ok, i'll try. How do I know if the coil is good with the dmm.

Thanks

 

[1rockford1 5,000+ posts]

ok, i'll try. How do I know if the coil is good with the dmm.
Thanks

u need to set it and put the probs to each coil and see what it reads. set it to what looks like a upside down u and lowest number. mine says 200.