Risking 1ohm on a 2ohm stable Pioneer amp

[juzzyx]

Hi,

I want to hook up 4 x kicker comps 4ohm svc and wire them to 1ohm parallel back to the amp.

My amp is only rated for 600rms at 2ohms (Pioneer GM-D8500M).

Will the amp function properly with 600rms at 1ohm?

[kcpwns]

Wouldn't recommend it...

[sweefu]

4 single 4ohm subs wired parallel does not equal 1 ohm, it will be less than 1ohm. Your amp will go into protect and not function, or it will overheat and blow up, or just blow up.

[StoneX]

Four 4 ohm subs in parallel is 1 ohm (nominal). I would not risk your amp at 1 ohm, it will blow eventually.

[juzzyx]

cheers man. I wont do it then.

[acarmody]

Might be fun for a few second tone burst though

[davey g-force]

4 single 4ohm subs wired parallel does not equal 1 ohm,

Yes it does. Have a look through your high school physics text books..

[HCVP]

Yes it does. Have a look through your high school physics text books..

That's on paper, you have impedance curve, dips ect, it will drop to below 1 ohm, which is when the problems will happen.

[m1lky]

Is the amp a mono or 2 channel?

You could wire it to 4 ohm or 2, 2 ohm loads

[StoneX]

It's a mono amp that does 600Wrms at 2 ohm or 300Wrms at 4 ohm. He can't get 4 ohm with four 4 ohm subs unless he wires in series which should not be done.

[AmmoJammo]

That's on paper, you have impedance curve, dips ect, it will drop to below 1 ohm, which is when the problems will happen.

it won't drop below the dc resistance, chances are it won't even get that low.

[HCVP]

it won't drop below the dc resistance, chances are it won't even get that low.

Isn't dc resistance measured at rest and then rounded up by manafactuers to give the nominal impedance value ? That's always been my understanding, but i don't know much more than that about it. I've seen a few impedance vs fq graphs though where the impedance level has still dropped before rising again. I wouldn't do it personally, not on his amp anyway.

[davey g-force]

I think it's pretty clear that he shouldn't do it - nobody's arguing that.

What we're saying is that if you wire up four x 4 ohm speakers in parallel, you'll get a 1 ohm load - not lower.

[axemurderer101]

just wire it up at 4 ohm

Rockford Fosgate® - Woofer WiringWizard

[HCVP]

just wire it up at 4 ohm

Rockford Fosgate® - Woofer WiringWizard

But again that would involve wiring them in series we (most people) don't do that.

[axemurderer101]

why cant you wire them in series?? as others have said wiring it to 1ohm will most likely do damage so wiring it to 4ohm is the only way you will get it to work. otherwise buy an amp that is stable at 1ohm

[AmmoJammo]

just wire it at 1ohm.

if the amp dies, good, then you can buy something more suitable

[juzzyx]

Rofl. Thank you all for replying.

I just went with 2 x 300rms DVC Soundstream SST - 12/2 and the old kickers are siting in the garage now.

I Highly recommend these soundstream subs. When I pump it you can feel the bass in your chest and body, every hair you exposed have tingles. The sunglasses opens by itself near full volume . They pump about 1.75 times more then the kickers.

Subs only cost me $100 each. The owner told me he bought 50 of them for a good price, otherwise normally he would pay $100 each for them

[StoneX]

why cant you wire them in series??

Back-EMF

It is far less desirable to make subwoofer to subwoofer connections in series. Due to slight and unavoidable differences between speakers and the high likelihood of uneven loading between different speakers in a car, there will be slight differences in the mechanical behavior of the two speakers in series. These differences in movement result in the creation of induced voltage (called back EMF) by the speakers across the series connection. This effect causes a problem when two speakers that behave differently are connected in series because the speakers can modulate each other (cause each other to move), resulting in distortion. The problem becomes more serious as more speakers are connected in series.