Little help deciding on how many subs

[xile]

Ok guys heres the deal. I got 4 dc audio xl 18's they are d1 voice coils and the amp being used is a dc 9k. As you know running 4 subs my wireing options are .5 ohm or 2 ohm. Before anyone ask why I didn't get d2 subs it was all at package deal at at great price. Now the question is would I get more db's running all 4 at 2 ohm or running 3 at 1.5 ohm. Amp is rated at 4800 rms at 2 ohm and if my math is right it should put out around 6800 rms at 1.5 ohm. So whats the better setup.

Thanks.

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[Massive spl]

Why not four at .5ohm?

 

[xile]

Dc doesn't rate the 9k at .5 ohm stable. Some say you can do it others say don't. Not brave enough to risk trashing the amp.

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[Massive spl]

If u have the electrical that bltch will run .5ohm all day. Like a 350amp alt and 8 d3100batts or dual alts and acouple batts

 

[xile]

If u have the electrical that bltch will run .5ohm all day. Like a 350amp alt and 8 d3100batts or dual alts and acouple batts

Yea the 8 3100's would kill me for weight. Im riding on 35 series tires. I planned on running 4 deka g31 batts in the back and 1 up front. Still looking for a alternator.

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[Massive spl]

Yea the 8 3100's would kill me for weight. Im riding on 35 series tires. I planned on running 4 deka g31 batts in the back and 1 up front. Still looking for a alternator.
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Lol lo pros usually have a good weight limit do to the small stuff side wall.. I'm on 30series tires and have tons on weight.

 

[xile]

I wounder if anyone has clamped a 9k at .5 ohm might have to hijack me a truck full of batteries

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[xile]

Any other thoughts on this. Im really on the fence and want to start building my box soon.

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[tymoto21 10+ year member]

Do 4 at 2 ohm

If your voltage is stable wire to .5ohm and let her rip!

 

[xile]

Do 4 at 2 ohmIf your voltage is stable wire to .5ohm and let her rip!

I was leaning towards 4 @ 2 ohm. Going to use a xs vdc controller so hopefully the little added voltage will yield a little more power at 2 ohm

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[subzero 5,000+ posts]

Ok guys heres the deal. I got 4 dc audio xl 18's they are d1 voice coils and the amp being used is a dc 9k. As you know running 4 subs my wireing options are .5 ohm or 2 ohm. Before anyone ask why I didn't get d2 subs it was all at package deal at at great price. Now the question is would I get more db's running all 4 at 2 ohm or running 3 at 1.5 ohm. Amp is rated at 4800 rms at 2 ohm and if my math is right it should put out around 6800 rms at 1.5 ohm. So whats the better setup. Thanks.

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DO you have a high output alternator. Extra batts. power wire upgrades?

 

[xile]

DO you have a high output alternator. Extra batts. power wire upgrades?

Yes. The plan for electrical will be a single HO alternator 1 deka g31 up front and 4 in the back. 2 runs of true 2/0 ofc positive and negative to the back. Also getting a xs vcb controller

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[subzero 5,000+ posts]

Yes. The plan for electrical will be a single HO alternator 1 deka g31 up front and 4 in the back. 2 runs of true 2/0 ofc positive and negative to the back. Also getting a xs vcb controller
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Well, when you do that, drop the impedance to .5 ohms and go ham.

 

[xile]

Are you 100% sure that amp will handle .5 ohm. I figured the load would be slightly higher with box rise or reactive load so to speak. Just not 100% sure on running it that low. I've searched all over and can't find any info on someone running a dc 9k at .5. Someone brought it up over on smd form and everyone said don't do it. Not saying they are right just dont want to cook a amp.

Thanks for the input.

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[xile]

I guess the thing to do would be wire them at .5 and clamp the amp to see what the resistive load is and go from there

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