capacitor quandary.

[DiamondAudioFan 10+ year member]

I'm having troubles w/ my voltage in my car. The PPI amp draws too much power. it's only @ like 12-13 volts even when my car is running, and when i turn off the motor the voltage drops to like 9 or below. Should i just stop running my subs for a while, and wait for the battery to recharge, or should i get a 1 farad cap. for my PPI amp?????????

I have an almost new battery, it was new about a month before i got my 1kW amp, so my batt. isn't too old.

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[taylor 10+ year member]

your alternator could be weak...get it tested, if its good then purchase a cap...

 

[bigbassman Premium Member]

Do not purchase a cap.. anything under 10 farrads is utterly useless...

alternators produce voltage.. every other device is a storage device, and will become a load when you drop knob...

"it takes power to make power"

Loyd L.

 

[RcRacerDrew 10+ year member]

How can anything under 10 Farads be useless? It only makes sense to me that any additional stored power would help. If someones running upwards of a 2000 watt system what would you suggest they do? Change alternators or ad a second battery?

 

[chris229 10+ year member]

Originally posted by bigbassman Do not purchase a cap.. anything under 10 farrads is utterly useless...

a 10 farad cap would be useless. a low esr/esl cap is what is needed. you advising not to buy a cap means you don't understand what they do OR how a amp works

 

alternators produce voltage.. every other device is a storage device, and will become a load when you drop knob...

yes BUT what needs to be looked at is the voltage the storage device can be charged too, the ESR/ESL of the storage device and the speed of recharge

 

"it takes power to make power"

sure does ---- just need to look at how that power is made. THEN you can decide how to supply it