Another Optima red top or 50 farad Rockford Fosgate Capacitor

 

New member
Username: Jonmtx

Midlothian, VA United States

Post Number: 1
Registered: Oct-05
When I turn up my music, interior and exterior lights dim. I already have a 180amp Hi-performance Alt. and optima red top.
 

Silver Member
Username: Tdisanto

Post Number: 394
Registered: Sep-05
were gunna need a little more info than that.

How many amps, what kinds, and how many watts total?
 

New member
Username: Jonmtx

Midlothian, VA United States

Post Number: 2
Registered: Oct-05
2-1501D MTX AMP
1-1004 MTX AMP
 

Platinum Member
Username: Glasswolf

Wisteria, Lane USA

Post Number: 10727
Registered: Dec-03
http://www.betteraudio.com/geolemon/newmain/battcapalt/

particular mention is made regarding dimming lights and voltage regulation in the article.
 

Platinum Member
Username: Glasswolf

Wisteria, Lane USA

Post Number: 10728
Registered: Dec-03
by the way a lot of alternators only put out full current above idle, too.
usually over 900 or 2000RPM. depends on the car and the alternator.

if this happens mostly when the car is sitting still, the reason is your upgrades aren't helping, and you may want to use dedicated yellow tops for the audio system on a battery isolator in addition to the alternator.
the red top is just a starter battery. not a deep cycle.
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