something wrong with subs

[pd1dish 10+ year member]

i have 2 subwoofers in my car and have had them for a year now. they worked great until now. one day they completely went out so i took them back to Best Buy (where i had them installed) and they fixed the problem. now i have a new problem just a few days later...the subs are coming in and out. what i mean is that they will be performing at what they should be and then all of a sudden in the middle of a song, they will lose about 75% of the bass. this happens to every song and they go in and out constantly.

what could be wrong and is there a simple way to fix it? idk their specs but i do know that the amp can handle the subs. i dont want to take my car back just yet because it takes them a couple of hours and i have a job and dont have the time during my day.

Subs: 2 MTX Audio Thunder 4500 subs and a link for all the specs: http://www.circuitcity.com/ssm/MTX-Thunder-10-Subwoofer-T451004/sem/rpsm/oid/147569/catOid/-13093/rpem/ccd/productDetail.do

Amp: Rockford Fosgate Punch P400-2

thanks

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[wr11shredz 10+ year member]

i have 2 subwoofers in my car and have had them for a year now. they worked great until now. one day they completely went out so i took them back to Best Buy (where i had them installed) and they fixed the problem. now i have a new problem just a few days later...the subs are coming in and out. what i mean is that they will be performing at what they should be and then all of a sudden in the middle of a song, they will lose about 75% of the bass. this happens to every song and they go in and out constantly.
what could be wrong and is there a simple way to fix it? idk their specs but i do know that the amp can handle the subs. i dont want to take my car back just yet because it takes them a couple of hours and i have a job and dont have the time during my day.

Subs: 2 MTX Audio Thunder 4500 subs and a link for all the specs: http://www.circuitcity.com/ssm/MTX-Thunder-10-Subwoofer-T451004/sem/rpsm/oid/147569/catOid/-13093/rpem/ccd/productDetail.do

Amp: Rockford Fosgate Punch P400-2

thanks

found your problem

 

[ThatChevyGuy 5,000+ posts]

Either your electrical is failing or the amp is going into a protection mode.

 

[MrDave 10+ year member]

Check that all the wires are okay, and check the ground. Protection mode is a possibility.

 

[lilmaniac2 5,000+ posts]

id check the connections on the subs

probably take it back to best buy again and get them to fix it

 

[pd1dish 10+ year member]

found your problem

what do you mean found your problem...if you know please share...

 

[ThatChevyGuy 5,000+ posts]

Best buy is the problem.

First rule of caraudio.com

Dont get shit installed at BB OR CC.

 

[pd1dish 10+ year member]

Check that all the wires are okay, and check the ground. Protection mode is a possibility.

i think the guys at Bestbuy would have noticed if the wires were connected wrong, but how do i know if the amp is in protection mode?

 

[x2o 10+ year member]

Is the amp getting hot? And also, there should be some sort of protect light on the amp, whenever the bass cuts out, see if a new light comes up.

 

[pd1dish 10+ year member]

Is the amp getting hot? And also, there should be some sort of protect light on the amp, whenever the bass cuts out, see if a new light comes up.

i dont think the protect light comes on. just the power light comes on but it used to come on

 

[DidUHearThat? 10+ year member]

Does this happen when you run it quietly, or only when loud?

 

[romans535 10+ year member]

Does this happen when you run it quietly, or only when loud?

Yes, if it does that I'm sure that it might be that your ground cable got loose.

 

[pd1dish 10+ year member]

Yes, if it does that I'm sure that it might be that your ground cable got loose.

i will definately check. now that you bring it up...i think it is when it is loud. i am going to check my ground cable right now.

 

[pd1dish 10+ year member]

the ground cable was only about half way in so i plugged it in all the way and i will play it tomorrow on my way to work and get back to you guys to see if this fixes it. thanks to everyone that posted.

 

[romans535 10+ year member]

the ground cable was only about half way in so i plugged it in all the way and i will play it tomorrow on my way to work and get back to you guys to see if this fixes it. thanks to everyone that posted.

Glad you found your problem, I because of my lazyness did a half *** ground and later had to take all my stuff out to re do it. Make sure you scrape the area drill a hole and put a nut under the car so that it gets real tight. GOOD LUCK