"Kim Inglar" wrote in message
...

"KaeZoo" wrote in message
y.com...
Neither a capacitor nor a second battery will do anything to help an
alternator keep up with current demand when the engine is running.

A second battery or a higher capacity battery is useful if you want to
play
your system for long periods of time with the engine off.

The purpose of a capacitor is to improve the audio quality rather than
to
reduce the strain on your electrical system. Judging from the feedback
I've
seen, if they do have any effect on the sound quality, it's pretty
subtle.

I wouldn't go right out and buy a new alternator just because you're
installing a high power system, however. Your stock alternator may be
able
to supply all the current you need for normal use.

I´m not going to play that mutch with the engine off. It´s going to be
used
when I´m driving to work and other locations. But do you think it will be
enough with an alternator that deliveres 70A?

Kim


It depends on whether you drive the system to its full capacity, as well as
what other electrical devices in the vehicle are in use. Just because you
have high-power amplifiers doesn't mean they'll be drawing maximum current
all the time. There's a very good chance that your normal use of the system
won't overtax your alternator. The only way to tell for sure is to try it
out.