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Discussion Starter #1
I have a 1300 watt system and under more taxing volume I get the light flicker characteristic of insufficient power. While I’ve found some threads on HO alternators, most were in regards to towing. I rarely have my volume past 1/3 or 1/2 volume. I’m looking for advice for when I do want to crank if I should get a high output alternator or an audio capacitor. If for either, since I’m still noobish, I could use some help in what kind of the two I need.
 

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There is a higher 150A alternator that is available. The fuse would need to be changed and I am not sure what else.

Also you can change the battery to a more powerful AGM battery. These types of battery don't drain as fast under heavy loads.
 

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I just found this site that have custom high output alternators. Prices are crazy high though.
 

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Discussion Starter #9
W
I just found this site that have custom high output alternators. Prices are crazy high though.
what kind of benefits might there be to one of these higher output alternators than the v6s 150 amp. Should I just get a 150 through rock auto or would a 240 from this site be worth it. Price isn’t Too big a problem for me. I’m just wondering what’s necessary and ideal for my needs.
 

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I am not sure but maybe the 150 A is not powerful enough. You can use that site that calculate what the alternator requirement is with your setup.
 

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Discussion Starter #11
I just found this site that have custom high output alternators. Prices are crazy high though.
Im not seeing that many positive reviews on these “high” outputs
 

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I don't recommend changing the main battery to a yellow top, use a red top since it's a "starting" battery. Your lights flicker since the main battery can't sustain the current spikes caused by the audio amps' sudden need for power. The battery isolator allows both the main and secondary batteries to be charged by the alternator when the vehicle is running. When the vehicle is off, the audio amps will power off the secondary battery and/or cap, so it doesn't slowly kill the main battery.

Regarding audio loudness, my setup rule-of-thumb is to set the volume control to about 90%, then adjust the amplifier's gain so it doesn't clip your speakers. This way, you can enjoy listening at high volume without worrying about speaker damage.

I have no experience with HO alternator, your vehicle's electronics are protected by fuses in the fusible link boxes, and the wiring associated with them are limiters too. Is the 1300W rating continuous or peak power? To me, 1300W doesn't seem like you need a HO alternator, you may be better off with a secondary battery and/or cap.
 

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It's up to personal preference. If you plan to have the vehicle on at all times while playing loud music, the HO alternator may be a better option. However, if you want to play extended audio while vehicle is off, the secondary battery and cap would be a better option.
 
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