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sub wont play loud

Printed From: the12volt.com
Forum Name: Car Audio
Forum Discription: Car Stereos, Amplifiers, Crossovers, Processors, Speakers, Subwoofers, etc.
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=107409
Printed Date: May 12, 2025 at 12:31 PM


Topic: sub wont play loud

Posted By: cobaltssfiend
Subject: sub wont play loud
Date Posted: September 13, 2008 at 4:42 PM

i have everything hooked up right but the amp  will not play the sub without distortion, can i get some default amp tuning advice, and in a 07 cobalt ss witht eh pioneer audio system do you need to override the stock amp running to the stock sub?

thank you




Replies:

Posted By: i am an idiot
Date Posted: September 13, 2008 at 7:17 PM
Are you installing an amp, or are you trying to get the factory amp to work with the pioneer deck?   We need a little more info.



Posted By: cobaltssfiend
Date Posted: September 13, 2008 at 11:54 PM

i am installing a aftermarket mtx amp and an aftermarket mtx sub. I'm goin to unhook the factory sub. If you do need to bypass the stock amp, then why do you have to do so?

thank you again




Posted By: i am an idiot
Date Posted: September 14, 2008 at 1:14 AM
Where did you get input for the MTX amp?



Posted By: cobaltssfiend
Date Posted: September 14, 2008 at 2:12 AM
from the aftermarket head unit



Posted By: Steven Kephart
Date Posted: September 14, 2008 at 3:28 AM
Where do you have the gain and bass boost on the amplifier set at?



Posted By: KPierson
Date Posted: September 14, 2008 at 7:44 AM
I would try either unhooking the factory sub or reversing the plarity on the added sub.  It sounds like you have the subs out of phase.

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Kevin Pierson



Posted By: cobaltssfiend
Date Posted: September 14, 2008 at 11:11 AM
the gain i have set at the middle and the bass boost i have set at zero



Posted By: proatthagame
Date Posted: September 15, 2008 at 12:28 PM

cobaltssfiend wrote:
the gain i have set at the middle and the bass boost i have set at zero

Your gain needs to match the output voltage of your headunit. I personally DO NOT EVER use bass boost.

U might want to check the settings of your head unit. Make sure you have the same cutoff freq.

I think its either the setting of the headunit or a sub out of phase. (reverse the - and +)



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Yours Truly


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