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amp not getting enough power


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taylorbridges35 
Member - Posts: 2
Member spacespace
Joined: July 23, 2008
Location: Texas, United States
Posted: July 23, 2008 at 6:40 PM / IP Logged  
when i turn the volume up, it sounds like my amp is not getting enough power to my subs (they sound good through volume 1-25, but loose power at 25-30. i was just wondering what could be causing this. i already have a capacitor BTW
heres the main stuff
kenwood KAC-9152D with 4 gauge batt cable-900 watt RMS
Pioneer 600 watt RMS amp with 8 guage batt cable
2 alpine type r 12's
4 farad power acoustic capacitor
is it my battery/alternator?
do i need bigger battery cable?
if my battery goes completely dead do i need to recharge my capacitor.
P.S. my lights still dim with the 4 farad
DYohn 
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Joined: April 22, 2003
Location: Arizona, United States
Posted: July 23, 2008 at 6:44 PM / IP Logged  
Get rid of the capacitor, upgrade the big 3 and install a high-output alternator.  Problem solved.
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i am an idiot 
Platinum - Posts: 13,605
Platinum spaceThis member consistently provides reliable informationspace
Joined: September 21, 2006
Location: Louisiana, United States
Posted: July 23, 2008 at 6:56 PM / IP Logged  
Does your radio have a loudness button?  
taylorbridges35 
Member - Posts: 2
Member spacespace
Joined: July 23, 2008
Location: Texas, United States
Posted: July 23, 2008 at 11:35 PM / IP Logged  
yea i have the loudness which i can set to high s mids or lows.
soon after i got the capacitor i noticed that they are not worth S***. my lights still dim.
advanced_audio 
Copper - Posts: 170
Copper spacespace
Joined: July 07, 2006
Location: United States
Posted: July 23, 2008 at 11:40 PM / IP Logged  
Read the sticky on capacitors. They will not solve a dimming light issue. Like what dyohn said, do the big 3 and if that does not solve your problem you need a higher output alternator.
i am an idiot 
Platinum - Posts: 13,605
Platinum spaceThis member consistently provides reliable informationspace
Joined: September 21, 2006
Location: Louisiana, United States
Posted: July 23, 2008 at 11:43 PM / IP Logged  

If you are using the loudness, try turning it off.  The loudness contour works untill a certain point on the volume control.  It may turn off at 25 on your particular deck.

furflier 
Copper - Posts: 236
Copper spacespace
Joined: June 14, 2004
Location: United States
Posted: July 24, 2008 at 1:07 PM / IP Logged  
Correct me if I am wrong. If his volume only goes to 30, then @25 he is past 3/4 of the way on the volume. Which would mean he is sending a clipped signal to his amp. Maybe I read his post wrong, but that is what I got from it.
DYohn 
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Joined: April 22, 2003
Location: Arizona, United States
Posted: July 24, 2008 at 8:10 PM / IP Logged  

furflier wrote:
Correct me if I am wrong. If his volume only goes to 30, then @25 he is past 3/4 of the way on the volume. Which would mean he is sending a clipped signal to his amp. Maybe I read his post wrong, but that is what I got from it.

Yes, it is possible the signal is clipping and that is what he's hearing.   Not all HUs clip at 3/4 volume, but it could be related to this issue.  I still suspect power problems, though.

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