What to look for used subs

[Chalo_209]

So I'm going to take a look at 2 x12s tommorrow and im not sure what to look for or how to tell if something is wrong. Any tips?

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[kr15 5,000+ posts]

Take a dmm and check the coils

 

[Chalo_209]

Take a dmm and check the coils

What would be considered a bad reading?
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[SubbinNCali 10+ year member]

Find out what impedance they're "supposed" to be and compare to what they actually read with the DMM. If D4's, the coils should read 3.8ish-4ish each.

 

[kr15 5,000+ posts]

They should read within a few tenths. Check resistance in probes by touching them together. Usually reads a few tenths also

 

[Chalo_209]

What setting would it be

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[Chalo_209]

If they give a bad reading is it difficult to repair? He doesn't have anything to try on so if the reading is good that means they should work Correct

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[Popwarhomie 5,000+ posts]

200 ohm.

Yes if the coils are bad it would require recones.

 

[My63bug]

Id check impedance and smell motor for any burnt smells

 

[Kam311]

What subs are they?

 

[BOOMINGRANDPA 5,000+ posts]

What subs are they?

yeah if they planet audio or boss don't buy them no matter what lol..

 

[Popwarhomie 5,000+ posts]

Says two X12s in the first post.

 

[Chalo_209]

What subs are they?

2 sundown x12
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[Boomin_tahoe 5,000+ posts]

Just as popwarhomie said, set DMM at 200 ohms. Stick probe in each pos(red) and neg(black) of the terminal of the sub. Should give you a lower number if the subs are dual 4 ohm, then it might read 3.7 or 3.6 There's never a perfect 4.0 coil read.

Same with dual 2 ohms. So the DMM should say 1.7 or so give or take a point or two. Let us know how it goes.

 

[Chalo_209]

Just as popwarhomie said, set DMM at 200 ohms. Stick probe in each pos(red) and neg(black) of the terminal of the sub. Should give you a lower number if the subs are dual 4 ohm, then it might read 3.7 or 3.6 There's never a perfect 4.0 coil read.
Same with dual 2 ohms. So the DMM should say 1.7 or so give or take a point or two. Let us know how it goes.

I just picked them up the lowes reading I got was 3.6 so I got them. Now just need to figure out the dimensions for a box and build one
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