Recent content by heffrey

I fixed it! Ground was fine, I even ran the ground directly to the battery and the problem persisted. Evidently, my amp doesn't like my head unit's LPF, or the LPF on the head unit is poor. I turned off the head unit LPF (which was set at 80hz) and set it to 80hz on the amp and it works perfectly!

Good to know, thank you...should I use the remote wire or the knob on the amp? I'm wondering if this is a Hifonics thing. But why then would the output voltage decrease once it passes ~23v?

With car off. I can check running voltage tomorrow.

Could the power and ground wire be the issue? Both are 4 gauge, and speakers and subs are total 1,240 RMS.

Any ideas what it could be then?

Might it be the head unit pre-out is too low? It's 2.5v.

Looks like my speaker amp isn't outputting enough voltage either. Could it be a grounding issue?? Although my battery reads 12.54V, which is identical to the voltage at the amps.

Which is still 8.6v less than what I'm looking for...

50hz. Update: I turned the subwoofer output to +15, and now when I read the output voltage it will go up to ~23v at about 2/3 gain, but if I turn the gain up beyond that the voltage output DECREASES...

I have an aftermarket HU. This one: Kenwood KDC-348U CD receiver at Crutchfield.com

Hello, I am running into problems with my amp not outputting enough voltage. I installed this setup, with the subwoofers wired in parallel, for an impedance of 1 ohm. 2 x Pioneer TS-W3003D4 12" Subwoofers + 1000W Hifonics X1000.1D Amp. I verified that the impedance is 1 ohm by using a DMM...

Good to know, thanks! Any other input?

Why do you say that? Better brand? More power?

Hello all, I am looking to upgrade my current subs and sub amp, on a budget. However, I can not decide between two setups... SETUP 1: 2 x Pioneer TS-W3003D4 12" Subwoofers + 1000W Hifonics X1000.1D Amp Which contains 2x Pioneer TS-W3003D4 12" Champion Pro Series 2000W Subwoofer And 1x...