I have wondered long enough why car audio manufacturers list specs for 2
different voltages, specifically 12 volt and 14.4 volt. The power ratings
at these two voltages can vary quite a bit (Phoenix Gold seems to come to
mind here).

Why the two sets of specs? What on earth can I do to feed my system the
14.4 volts (just drive the vehicle)? Are there any benefits to providing
the system 14.4 volts?

I have noticed my alt meter when driving is always above 12 volts. Is it
14.4? Can't really tell.

Thanks for your explanation.

Regards,
Steve