new system is quiet

[garretttt4 10+ year member]

Put in a new system today, two custom mmats juggernaut 12's in 4.3 cubes net tuned to 34hz with a ab vfl 175.1. Wired to half ohm, gain about 2/3 of the way up. Two kinetik hc 2400s in the back and just a regular batt up front with big 3 on stock alt for now and two runs of + one run kf -.Got it all hooked up and Its really quiet. Like just enough to where you barely feel it. Was louder with the juggs on a 800 watt DD m80 so something's not right. Lol

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[garychoffmann 10+ year member]

Settings, phase, bad amp? Dmm your amp to get an idea of your output.

 

[garretttt4 10+ year member]

What should the phase be at? But ok I will test that in the morn.

 

[Umbra]

Make sure you don't accidentally have the polarity (pos/neg) on one of the subs swapped.

Electrically it's fine, but one will play 180 degrees out of phase. This causes the subs to cancel each other out, massively reducing your output.

 

[garretttt4 10+ year member]

Make sure you don't accidentally have the polarity (pos/neg) on one of the subs swapped.
Electrically it's fine, but one will play 180 degrees out of phase. This causes the subs to cancel each other out, massively reducing your output.

Checked and they're wired good...they both seem like they're moving at the same but idk I guess. On the loudest song they only move maybe a 1/8". Tried running RCA's from my buddies car who has a system in his that works well and its not much louder. So I think something has to be wrong with the amp or wiring. And I'm guessing it's not the amp. But the sub's are each wired to 1 ohm then down to .5 ohm and I'm reading .6 at the amp so idk what it is.

 

[mylows10 5,000+ posts]

Recheck all your wiring. And try replacing the rcas

 

[mazdakid 5,000+ posts]

Try 1 sub hooked up at a time and make sure it's not the wiring on those.

 

[mylows10 5,000+ posts]

Also Garrett try hooking an iPod directly to the amp

 

[garretttt4 10+ year member]

Recheck all your wiring. And try replacing the rcas

Tried a diff set of working RCA's that were running another system....

 

[garretttt4 10+ year member]

Also Garrett try hooking an iPod directly to the amp

I don't have a aux to rca converter thing...

 

[garretttt4 10+ year member]

Try 1 sub hooked up at a time and make sure it's not the wiring on those.

Going to hook up another system I got in the garage that I know worked on another amp.

 

[mazdakid 5,000+ posts]

What do you mean another system?

Unhook 1 of your subs and see if there's a difference in output.

 

[garretttt4 10+ year member]

What do you mean another system?Unhook 1 of your subs and see if there's a difference in output.

I had a set of Oz's in a diff box wired at .5 ohm and tried those and its the same. Tried unhooking one of the sub's in my truck and It still only moves like 1/2" if that. Should be moving waaay more than it is...

 

[garretttt4 10+ year member]

Settings on the deck are bass is on 0, treble is turned up to like +2, and idk what the others are but they're at 0 though. Subsonic on the amp is at 20, lpf is at 70, bass boost is at 0, phase is at 0° and gain is about 2/3 of the way up.

 

[mylows10 5,000+ posts]

Hmm