Anyone with Corolla 05-08 with 1500+ RMS

[jrwalte 10+ year member]

I have a 2007 Corolla with the equipment in my sig. It is capable of 1900RMS. I'm running 1/0 power to trunk and big three. I have a 6" 4g ground from amp to distro and then 8" 1/0 ground to chassis on a streetwires grounding block that is bolted down.

I'm wondering if my car's frame is inadequate to handle the high current for my ground and if I should run a dedicated 1/0 from battery. Even with my HO 180A alt (not tested for actual output) I get odd voltage drops. Such as I'll have sudden drops into the 12s even when the system isn't turned up loud but usually it'll stay at a constant 14+ volts.

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[BurnOne]

about to put 2000+ in my '93. //content.invisioncic.com/y282845/emoticons/wink.gif.608e3ea05f1a9f98611af0861652f8fb.gif

 

[ls2poweredgoat 5,000+ posts]

Throw a battery in the back.

 

[bk12321 10+ year member]

can ur amp take 1/0 for ground?

 

[jrwalte 10+ year member]

can ur amp take 1/0 for ground?

Unfortunately not. It's 4g.

I figure my two options are battery in trunk or dedicated ground. Since I'd want a dedicated 1/0 ground from front battery to rear if I go with a battery in the trunk anyways, I might as well run the 1/0 ground now see if it works and then get the battery if I have to, no?

If I were to get a battery in the trunk, what size would you recommend for my system? Do I need something as large as a Powermaster D3100 or Kinetik HC2400 or would a D2400 or HC2000 be good?

 

[jrwalte 10+ year member]

Update:

Ran dedicated 1/0 ground run of Knu Fleks and voltage at HU is much better. It'll stay higher and the system will go louder and now rarely goes below 13.5 @ 2000+ RPM. The only thing that seemed to make it go below was sometimes when the initial bass hit would occur. I suspect a rear battery would help the single HC1400 handle those spikes.

I found that running the ground from the ground point on my EA alt instead of from my battery is what made the huge difference. Apparently I have some current throughput issues in my ground from alt -> Chassis -> battery, but yet the ohm resistance is near zero.

I believe this is due to my chassis because I had a 14" run from the alt ground to the chassis, so the alt had a direct ground to the chassis and not from the engine block - it just can't handle the current apparently. Due to this I may install another 1/0 ground run from my alt to my front bat. This way my amps have a direct wire ground to the bat, whereas currently it has to run to alt -> engine block -> chassis -> bat.

 

[Saint211 10+ year member]

You could use a 1/0 to 4 reducer fitting to make the ground 1/0.... on your amp i mean.... unless its a forl terminal....

 

[jrwalte 10+ year member]

since the 4g wire from the distro block is only about 5" long I figure that's probably working as good as a reducer directly from 1/0.