On Sun, 29 Dec 2002, Bradley Flubacher wrote:

> If the head unit does not have a sub-out, you'll have to look into the
> issue of a crossover. You do not want frequencies higher than a hundred
> or two Hertz going to the subs.

Some amps also have built-in crossovers.  The Kenwood amp I use in my
Honda is that way.  It saves a certain amount of expense and wiring.

             _ _
  __ _ _   _| | |  | David M. Brodbeck (N8SRE)              Ypsilanti, MI
 / _` | | | | | |  +-----------------------------------------------------
| (_| | |_| | | | @ cyberspace.org
 \__, |\__,_|_|_| "To the optimist, the glass is half full.  To the
 |___/             pessimist, the glass is half empty.  To the engineer,
                   the glass is twice as big as it needs to be."