Amp + Sub Please Help

[TRIX34]

Hey Guys,

I have a 4 channel amp connected in my boot with my front and rear speakers connected can I just add a sub to that amp or can I use my spare amp and piggyback off the current amp and connect the sub to the second amp? And if I piggyback what do I do to connect the second amp?

Thanks

Dion

[Carbon 34]

depends on the size/gauge of the wire and the combined amp current draw. and how hot the wire gets, some degrades quickly and can create a fire hazard.and of course the fuse at the battery will need updating as well if it can be ?????

0Ga about 200-300amps but really varies with brands and manufacturing, lots of plated alloy floating around, that can and will melt with 200amps thru it on a hot day.

4ga can handle about 120-150 amps max. on a good day, brand etc.

8ga about 80 amps max

depending on your current amp brand/specs etc , you can run it bridged mono and stereo at the same time, if your rear speakers can go on the front channel or run thru a passive crossover(external to the amp)

so most modern amps can run 4 speakers and a sub off two channels or 4channels ,but must be 2ohm stable.

because the amp wont see lower impedance with crossovers. in most cases it would be at least 2 ohms load from 20hz -20khz and way more in certain freq. without a zobel filter and impedance matching crossovers= really expensive to build from jaycar parts, cheaper to amp the other amp

the sub would need to be 4ohm single voice coil or similar ohm load from mutiple coils , with aprox a 6.4mh coil in series with the positive output wire on the sub.

if you need a wiring chart I can dig one up, pm me your amp brand/model first.