Do I need a new battery or alternator?

 

Bronze Member
Username: Eexospire

Post Number: 17
Registered: Oct-08
To you the viewer,

Car:
99 Mitsubishi Galant
2.4CYL
90amp alternator
BIG 3 Done
Stock OEM Battery

System:
IDMAX 12" Ported
Alpine MRP-M1000
Hertz Energy Front and Rear Coaxials
Sony 4 Channel 60RMSx4

So I'm running a little over 1200RMS watts. When I first turn my car on and play music sort of loud, sounds great, earth shattering bass and all. If I drive a long distance (20+ mins) and continue listening to songs with a fair amount of bass at loud volumes, the bass will eventually get quieter and quieter. Does this mean I need a better battery or alternator? Lights never dim (ever since the BIG 3) and car always starts quick. Before when I was running 700RMS I didn't have this problem. What do you guys think?
 

New member
Username: Venus88591

Post Number: 1
Registered: Aug-10
Thank you for sharing.
 

Gold Member
Username: Illuminator

USA

Post Number: 5427
Registered: Apr-05
Venus, now look what you did! You ruined a perfectly good thread!
 

Bronze Member
Username: Eexospire

Post Number: 18
Registered: Oct-08
Any comments on the topic?
 

Gold Member
Username: Illuminator

USA

Post Number: 5431
Registered: Apr-05
How hot do the amps get after running 20min and the bass starts to fade? And has this occurred since you've installed the amps or is it a recent problem?

And yes, it is definitely a possibility that you need an alternator with a higher amperage output.
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