Testing Ohm of subwoofer question

[colben22]

I just received back an old dual 2 ohm FI BL I use to own years ago.

I went to test the coils for resistance to make sure I was wired correctly. I measured each coil and got 2.5ohms. When wired like you would to get to 1 ohm, my multimeter said 1.5 ohms.

Is something wrong? do I need to clean connections?

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[HoneyBadgerRy]

I just received back an old dual 2 ohm FI BL I use to own years ago.
I went to test the coils for resistance to make sure I was wired correctly. I measured each coil and got 2.5ohms. When wired like you would to get to 1 ohm, my multimeter said 1.5 ohms.

Is something wrong? do I need to clean connections?

From a newb of subwoofers, but a part time electrician, cleaning the terminals and new wires could very likely be the cure to your problem.

 

[dbjunior 10+ year member]

Touch the two leads together I bet it's close to .5 reading for the cables

 

[colben22]

What would you suggest to do this?

With both multimeter leads touching I get about .7

 

[dbjunior 10+ year member]

That means you can subtract .7 from your readings the coils would be 1.8 each and .8 wired together probably really .9 sub should be fine but you might need new probes soon.

 

[colben22]

Is it possible to get new probes? I have had the sub for about 5 years now so it has definitely had some use.

 

[HoneyBadgerRy]

I can't believe I forgot to post what dbjunior said. I kinda figured it was common sense, so I never thought to mention it.

 

[dbjunior 10+ year member]

Home depot or lowes should have them or just get a new cheap dmm. I bet the sub is perfectly fine

 

[colben22]

Ohh, i thought you meant probes in relation to the sub - duh. The weird thing is this is a new multi meter, less than a week old.

 

[wew lad 5,000+ posts]

edit; thread updated before i posted

 

[colben22]

I tried probes on my old meter. .7-.8 with leads touching and 2.3 on the subwoofer. I guess Ill throw it back in the box and roll with it!

 

[dbjunior 10+ year member]

That's high for probes. Mine are usually 0 to .2 at the most.