I just got a 15" FI Q sub and am not sure if the its dual 2 ohm or dual 1 ohm voicecoil.
Since is a custom made sub there isnt a stamp on the magnent stating which voice coils it has.
The guy said its a dual 2 ohm sub but then he said it was wired to 2 ohms. Well u cant wire a dual 2 ohm sub to 2 ohms. and yes both voicecoils are being used. lol

so how did i find out with a digital multi meter?

I figured it out... Each voice coil measured 2.4 ohms.
Good thats what i needed! Wiring it to 4 ohms and bridging one of my amps to it. just not sure which one

Those subs are monsters, they're gonna laugh at that power though.

so now you can sell me or trade lol your two 15'*

If they were wired in parallel, they would still pull 2 ohms.

Who are you talking to and what are you talking about?

I traded my 15" JL W0'* for this sub sorry Dude... my buddie said each coil is supposed to measure 1.5 for the dual 2 ohm FI Q.. is that true? did i just measure it wrong?

I'm talking to the OP about his question "The guy said its a dual 2 ohm sub but then he said it was wired to 2 ohms"


He'* correct about the 1.5 ohms Raptor. But thats an approximation. To really measure true impedance of a speaker or cabinet requires a rather complex procedure involving a signal generator, power amplifier, and a high frequency AC voltmeter. However, with raw speakers and many cabinets, the ohmmeter function of a digital multimeter can help you identify what the impedance of the speaker should be. Generally, the reading given by an ohmmeter will be about 2/3 to 3/4 of the impedance of the speaker. So, a 4 ohm speaker will typically measure about 2.5 - 3 ohms,a 8 ohm speaker will typically read about 5-6 ohms, while a 16 ohm speaker will measure around 12 ohms. So according to your measurements of 2.4 ohm'*, those are 4 ohm speakers. BTW, Cheap multimeters vary greatly for small voltage or ohmage readings.

Thanks LSMONTE.
And Venom u never seize to amaze me with ur broad range of knowledge.
I tried to hook my new system up but when i turned it up all three of my fuses in my amp popped..
I guess my amp just cant push this FI Q

Meh, I learned alot of electrical engineering being a contractor of various sorts, been blowing chit up in my cars for almost 40 years, and I hang out at the Custom Shop that did my car alot. I definitely not an audio tech.