dissapointed with this setup!! very angry..

[Ali1 10+ year member]

Okay, as you guys may know about my previous setup, it was far more louder than this new setup I have. my previous setup was a pair of 15" L7s (2ohm) on a zx2500 @ 2ohms. Electrical system consisted of two optimas in the back with a redtop upfront, stock alt, and 1/0 throughout vehicle. Gain was set a LITTLE UNDER A FOURTH. I had no need to turn the gain any higher as it was plenty loud. I had no intention on touching the bass boost or even raising the bass level from the headunit. To make a long story short, I swapped my zx2500 with a xxv colossus, swapped subs to 08 models (2ohm) so I can acheive a 1 ohm load on each channel, swapped both optimas for a single powermaster d3100 (largest battery powermaster makes), swapped jvc avx33 with alpine x100, and I noticed a huge decrease in output. I had to turn the gain all the way up to 95% in order to hear half of the output I got with my previous setup. At this point, I am very dissapointed with the overall setup. All connections are tight and secure. The battery swapping would make minimal difference in the output as described above, so I don't think the battery made the difference in output. As for the amp, its wired to 1ohm on each channel, essentially giving each sub 1600(not factoring in many variables such as impedence rise, voltage drops, resistance, etc.). My only other option is the head unit. I know these alpines are terrible in terms of voltage preout, but I've used other alpines ( 9856,9885,9855) which all have 2v preout and I've never had to turn a gain that high to hear audible output. any advice is appreciated. If I have to, I may ditch the HU and look into the pioneer 9800. Help me out fellas

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[spark plugs. 10+ year member]

did you turn up the sub-out on the head unit?

 

[kmanian 5,000+ posts]

there is nothng I see that you have done that should have given you a big decrease in volume. This has to be a setup issue

 

[hoxie08 5,000+ posts]

yeah check your head unit...

 

[kmanian 5,000+ posts]

have you checked the output voltage of your headunit?

and why start another thread?

 

[937DYTBOI 5,000+ posts]

first off y would you swap out the zx2500

 

[jbizzle 5,000+ posts]

does kicker even make svc 4 ohm subs for the l7's?

 

[skylineTT 10+ year member]

no. they are all DVC.. he might have been running that ZX at 1ohm and getting a ballscock load more power than he thought.

 

[jbizzle 5,000+ posts]

^ Thats what I was thinking..

 

[Ali1 10+ year member]

did you turn up the sub-out on the head unit?

I couldn't find the sub out like the previous alpines. I will check again. I hope this is the issue

 

[Andrew12 10+ year member]

^ Thats what I was thinking..

Nvm, misread it.

 

[Ali1 10+ year member]

have you checked the output voltage of your headunit?
and why start another thread?

Im on my phone

Sidekick FTL

 

[kovemaster559 5,000+ posts]

its probly the headunit u have great equiptment. cant see y u aint happy.

 

[Ali1 10+ year member]

first off y would you swap out the zx2500

Because I got a pair of BNIB 2008 15" L7s for $100, essentially $50 a piece. Zx2500 isn't stable to 1ohm, so I sold it. I also got another deal on a BNIB XXV colossus for $450 . Couldn't pass up these types of offers, so I jumped on them and then swapped those L7s for dual 2ohm.

 

[mlstrass 5,000+ posts]

I've had the same problem with a 2v Pio HU. Had to use LOUDNESS on the HU to get decent output from sub/comps, even with gains nearly maxed out. Swapped in a Kenwood 4.5v and turned the gains way down, but it was MUCH louder, cleaner, and fuller sounding. Even though it's not supposed to make a diff it did in this set up, so no more 2v HU's for me...