Power Issues, Headlights Dim Pretty Bad When Bass Hits
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=145301
Printed Date: May 16, 2024 at 3:41 PM
Topic: Power Issues, Headlights Dim Pretty Bad When Bass Hits
Posted By: jamesrundles
Subject: Power Issues, Headlights Dim Pretty Bad When Bass Hits
Date Posted: March 17, 2019 at 4:09 PM
So I installed my amp and subs in my car. When big bass hits my headlights dim pretty bad. Having had this problem before add I g a second battery just for audio doesn't completely fix the issue. Should I just get a bigger second battery and increase the main battery size or get a big capicator. From those out there with this issue what would or should the course of action be. Thanks in advance. James.
Replies:
Posted By: geepherder
Date Posted: March 17, 2019 at 6:11 PM
The alternator is the source of power for the vehicle. If your system draws more than the alternator can provide, no amount of batteries and/or capacitors will fix this. You need an alternator with a higher output. You didn't mention what vehicle/amp you are using.
------------- My ex once told me I have a perfect face for radio.
Posted By: jamesrundles
Date Posted: March 18, 2019 at 7:06 PM
I figured that was not really relevant to this question as this has been an issue in 4 different cars. My current car is a 2004 mitsubishi endeavor. 3.8l motor. Stock system with soundstorm 2f1600 amp. Amp is 800 x 2 at 2 ohm which is what I have. 2 audiobahn 12 inch in ported enclosure. Adding the second battery helps some but not completely and is cheaper than a new high output alternator. Thanks for the answer.
James
Posted By: jamesrundles
Date Posted: March 18, 2019 at 7:08 PM
Btw for power wire I am using 4 awg and ground is the same about 15 I chew away and I am running a 50 amp fuse
Posted By: geepherder
Date Posted: March 19, 2019 at 4:59 AM
Luckily, that amp can't produce 1600 watts, so it may not be as bad as you think. The math just doesn't work. If you add up the 2 25 amp fuses on the side of the amplifier, we'll assume a max 50 amps. At 50 amps and 32 volts input, it would still have to run at 100% efficiency.
We'll assume your factory alternator is rated at 110 amps, since that's what the Autozone replacements are rated.
For $70-$80 more than it would cost for a replacement alternator at the parts store, I found a 220 amp (above 1200 RPM's) alternator on ebay.
You could also look into having a shop rewind your factory alternator for higher output.
------------- My ex once told me I have a perfect face for radio.
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