Quick ohms question.

[Beerdrnkr 5,000+ posts]

I'm an idiot and have a hard time understanding ohm loads. I bought my dad a Kicker zx700.5 and need to know what ohm configuration on a sub do I need to get. Any help is appreciated.

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[fbi90909 5,000+ posts]

depends on what sub you are considering.

though i have to say, with your join date of 06, you should have known this by now.

 

[bonesninja 5,000+ posts]

probably should look for a dual 4 ohm sub...that amp puts out 410 watts at 2 ohms

 

[Stel 10+ year member]

The sub channel on that amp can do 420 watts rms on a 2 ohm load, or 210 watts rms on a 4 ohm load. So to get the most out of it find a sub with a 2 ohm resistance.

This can be either:

-1 single voice coil sub with the coil at 2ohms

-1 dual voice coil sub with each coil at 4 ohms (wired in parallel)

-2 subs each with a 4 ohm load (wired in parallel)

-2 subs each with a 1 ohm load (wired in series)

 

[Beerdrnkr 5,000+ posts]

probably should look for a dual 4 ohm sub...that amp puts out 410 watts at 2 ohms

Thanks Bones.

RMS Power (4 ohms) 70 watts x 4 chan. + 210 watts x 1 chan.

RMS Power (2 ohms) 85 watts x 4 chan. + 420 watts x 1 chan.

RMS Power (1 ohm) Not Stable

Bridged RMS Power 130 watts x 2 chan. + 420 watts x 1 chan. (at 2 ohms)

With these specs I wasn't sure if I had to run it at 4ohms because I'd be running the speakers all at 4ohms. So I guess I can run the speakers all at 4ohms and the sub at 2ohms?

 

[bonesninja 5,000+ posts]

Thanks Bones.
RMS Power (4 ohms) 70 watts x 4 chan. + 210 watts x 1 chan.

RMS Power (2 ohms) 85 watts x 4 chan. + 420 watts x 1 chan.

RMS Power (1 ohm) Not Stable

Bridged RMS Power 130 watts x 2 chan. + 420 watts x 1 chan. (at 2 ohms)

With these specs I wasn't sure if I had to run it at 4ohms because I'd be running the speakers all at 4ohms. So I guess I can run the speakers all at 4ohms and the sub at 2ohms?

yes sir that is correct

 

[bonesninja 5,000+ posts]

The sub channel on that amp can do 420 watts rms on a 2 ohm load, or 210 watts rms on a 4 ohm load. So to get the most out of it find a sub with a 2 ohm resistance.
This can be either:

-1 single voice coil sub with the coil at 2ohms

-1 dual voice coil sub with each coil at 4 ohms (wired in parallel)

-2 subs each with a 4 ohm load (wired in parallel)

-2 subs each with a 1 ohm load (wired in series)

you forgot the famous dual 1 ohm sub:crazy: