I have what looks like a lvl 4 18 but it ohms to 3.4 on each coil. Is it a lvl 3?

[Daniel Shepard]

May seem like a stupid question, but did you touch the multimeter leads together and see what it showed before you checked the sub? My buddy had a similar issue, thought he had a blown SA15, ordered a recone, read the same... checked the leads and found out his cheap DMM was just off.

When I touch them together it reads 1.5??

[OrionStang]

D2's?

[andale927]

May seem like a stupid question, but did you touch the multimeter leads together and see what it showed before you checked the sub? My buddy had a similar issue, thought he had a blown SA15, ordered a recone, read the same... checked the leads and found out his cheap DMM was just off.

When I touch them together it reads 1.5??

Well there's your problem, that means that your sub is actually reading 1.9. So you are fine XD

[bass_stalker]

well theres your problem, your dmm is really off, take whatever reading you get and subtract that 1.5

[OrionStang]

DMM leads aren't the problem, its just simple math. You have a d2 sub.

[Daniel Shepard]

D2's?

Seriously?? I guess I never thought of that. So it should read 0 when touched together? Its just a cheap harbor freight mm but has never given me fits. its set on 200 in the ohm setting of the meter.

[CJ18]

You are good bro you have a good d2 sub.

[OrionStang]

Most all meters have some resistance when the leads touch. Take that number from the number you get from the coils. 3.4-1.5=1.9=d2 sub.

[Daniel Shepard]

I have some beat up sony subs laying around, single 4. my meter reads 4.8? Thats not a full 1.5 off??

Edited July 16, 2012 by Daniel Shepard

[andale927]

I have some beat up sony subs laying around, single 4. I just when and ohm them and they read 4.8? Thats not a full 1.5 off

The impedence of a woofer is more of a ballpark, if you look at the sony's t/s it is probably 3.5ish DC resistance.