Sub still moving at zero volume?

 

Silver Member
Username: Stamant

LA, FL USA

Post Number: 461
Registered: Sep-04
I have two mono amps each running one of my two subs. When I turn my head unit to zero volume one of the subs is slightly moving in and out. I unplugged the input RCAs and the movement stops. What could I do to fix it?
 

Gold Member
Username: Snowball123

West Allis, WI

Post Number: 2476
Registered: Oct-07
who cares?
 

Platinum Member
Username: Rovin

1 15 = 149.5 DBs ...Trinidad & T...

Post Number: 14803
Registered: Jul-05
suspect gain is too high ...
 

Silver Member
Username: Dynamik

Post Number: 122
Registered: Feb-08
^^x2... I just fixed this problem in a buddy's car. Fix the gain, if you lose any volume, I suggest looking for a better amp.
 

Platinum Member
Username: Nd4spd18

Philadelphia, PA

Post Number: 10137
Registered: Jul-06
Could be that, or you could have a crappy HU or rca wires that are letting interference into the signal.
 

Silver Member
Username: Stamant

LA, FL USA

Post Number: 462
Registered: Sep-04
I did not have this problem before I removed the amps from my car for a couple of months. I had them reinstalled yesterday. Noticed the problem right away. So I don't think it could be the head unit or the RCAs cause they worked fine before. Same gain settings as well. I thought it might have to do with how the amps were wired. But I don't know.
Snow- Don't be a _ick. Looking for some help. Thanks.
 

Gold Member
Username: Snowball123

West Allis, WI

Post Number: 2479
Registered: Oct-07
im saying, why would that bother you so much. I'm sure it's doing no harm to the sub or amp.
 

Silver Member
Username: Stamant

LA, FL USA

Post Number: 463
Registered: Sep-04
Your kidding right? It can't be good for the amp or the sub. Something is not right which I'm sure could result in permanent damage to the sub or amp. So do you know what I could do to fix the problem?
 

Silver Member
Username: Stamant

LA, FL USA

Post Number: 464
Registered: Sep-04
Ok, I turned down the gain on the amp connected to the sub that is still moving at zero volume. The movement stopped. However, it was the same gain setting as before and I didn't have that problem. I moved the gain down on the other sub amp so they were equal and the subs do not seem to be moving together or at the same rate.
 

Platinum Member
Username: Nd4spd18

Philadelphia, PA

Post Number: 10141
Registered: Jul-06
Those amps have to be the exact same model, if not theres your problem.... then the gains have to be set exactly equal with a DMM.
 

Gold Member
Username: Surferdude9371

Get loud or go home....

Post Number: 1743
Registered: Mar-07
i had that prob i had turned the backstage volume up on my HU idk if you may have done that
 

Bronze Member
Username: Kickittothacurb

Post Number: 13
Registered: Mar-09
you need new RCA's
 

Bronze Member
Username: Kickittothacurb

Post Number: 14
Registered: Mar-09
sorry, i mean you might, idk your complete issue but i do agree with the multiple amps possibility as well.
 

Gold Member
Username: Snowball123

West Allis, WI

Post Number: 2481
Registered: Oct-07
maybe i'm thinking of it wrong. can't really picture it unless I would actually see it.
 

Platinum Member
Username: Nd4spd18

Philadelphia, PA

Post Number: 10143
Registered: Jul-06
If hes running two different amps together thats the problem right there......
 

Gold Member
Username: Hittin1

TEAM REVOLUTIONLake Charles...

Post Number: 2791
Registered: May-07
give decription of amps,hu, subs, and enclosure.
Is the enclosure common chambered? also lightly jiggle the rca's at all points on amps. Did you add anything to this setup while the amps were out(crossover,ect)?
Did you use same amp mounting and ground locations as before?
 

Gold Member
Username: Somedonniedude

Illinois Braaap MX

Post Number: 2444
Registered: May-07
Swap the RCA's on the amps, if it does it on the other amp then probably bad RCA's, might have messed up the ground in them when uninstalling. What kind of RCA's?
 

Silver Member
Username: Stamant

LA, FL USA

Post Number: 465
Registered: Sep-04
Head unit is a pioneer premier. Subs are 2 12" alphas, amps are one JBL for mids and highs, two ED Nine.1 for the subs. Enclosure is common chamber 4.5 cuft at 37 hz. Nothing different was added in the time I had everything out which makes me believe when everything was put back in they messed up wiring somewhere. Same RCAs.
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