SA-8 impedance

[Stanko 10+ year member]

I recently got a SA-8 sub from a buddy of mine because he found something bigger, but he didn't know what the ohms were on the voice coil. I know it can be either D2 or D4, but I'm wondering if there are some distinguishing features that I can use to figure out which of the two it is?

Are there any ways to visually distinguish it? And if not, is there a safe way to ballpark the impedance with a multimeter or something?

Thanks!

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[Phoenix Risen 10+ year member]

you put a dmm set to ohms on the coils.

and read...

 

[Stanko 10+ year member]

You sure that's right though? Every result I got on google that mentioned that was overrun with people saying you needed an o-scope and resistors and other stuff, and I'm just trying to get some clarification.

 

[Bettr n' Revrse 5,000+ posts]

Hahahaha an Oscope to tell impedance? Thats google for ya... Just do what Phoenix said...

 

[Stanko 10+ year member]

Haha right on, thanks a bunch //content.invisioncic.com/y282845/emoticons/redface.gif.62fdbfe1a101588a808c4cff71bcb942.gif

 

[Bettr n' Revrse 5,000+ posts]

No problem

 

[VWBobby 10+ year member]

nope, that's all you have to do to get an ohm reading. You might be reading about settings gains, clamping an amp, or some other measurement.

for 2 ohm sub, it will read around 1.3 ohms or so. a 4 ohm sub will read about 3.6.