[Walt]

wrote:

I have a 4 channel marine amplifier I will be installing in my boat,
to a Clarion Head unit with RCA for both the front and rear channels.
it is only 4 channels, however, the boat has six speakers in it, I am
guessing that f speakers are on the front channel and 2 are on the
rear. How can I aply this amp to this situation, any ideas?

Usually you can connect two speakers to an amp channel in parallel.
This assumes 8 ohm speakers and an amp capable of driving a 4 ohm load.
I put it at about a 95% chance of this being the case.

If they are 4 ohm speakers, or the amp doesn't like 4 ohm loads, hook
them up in series.

It's just a boat, make it work, don't obsess about audio quality.

//Walt
//
// three boats: no motors, electronics or plumbing on any of them