bridging 4 channel amp

[o2cavyss]

I'm trying to keep this as small an install as possible and I want the amp under the passenger seat. Also, won't the additional amp cause more strain on the electrical system than the single 4 channel amp?

[talnlnky]

Originally Posted by o2cavyss

I'm trying to keep this as small an install as possible and I want the amp under the passenger seat. Also, won't the additional amp cause more strain on the electrical system than the single 4 channel amp?

yes... but like said, you should be fine.

when you bridge two channels together you will go from being 2ohm stable to 4ohm stable.... For example. Most 4 channel amps can do 4 channels @ 4 or 2 ohm, or 2 bridged channels at 4ohm.

the power breakdown would look like this

75x4 watt amp:

37.5x4 @ 8ohm
75x4 @ 4ohm
150x4 @ 2ohm
or
(bridged mode)
150x2 @ 8ohm
300x2 @ 4ohm

so, depending on the type of sub you have, bridging may be a good idea, a bad idea, or a moot point. most subs have either a single 4ohm coil, or dual 4ohm coils (DVC 4ohm).

A single 4ohm coil would be perfect, a DVC 4ohm would require you to run 1 channel to each coil @ 4 ohm (total of 150rms), or 8ohm bridged (150rms) or run the amp out of spec @ 2ohm bridged (theoretically that'd mean 600rms, but really it won't be anywhere close to that cause of heat issues... plus you're bound to fry your amp some day.... if not soon).

If you had DVC 2ohm coils you could run 4ohm brdiged, or 2ohm on 2 different channels.. .both options give you max power out of that amp, and are safe.

like I said before however, most subs are either SVC or DVC 4ohm... and most entry level subs are SVC.