Help wiring a new SW to existing system

[threeqz]

Hello all I am a Newbie to the forum and I am hoping some here can help me out. I am replacing my boats old AquaticAV head unit with a new model Head unit that has BT capability. The system as wired consist of 6 speakers (2 in the cabin and 4 outside) an AquaticAV 520 watt 4 channel AMP. What I have going as far as connections are, RCA cables that connect the head unit to the amp then it looks to me like the speaker wires are connected to the AMP (all the positive wires together to one post on the amp and all the neg wires to another post on the amp) I plan on just leaving it the way it is as the sound was pretty nice but I would like to add a SW to the mix. That is where I am completely lost. Can anyone help.

Thanks in advance.

jt

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[garychoffmann 10+ year member]

You will need an amp and a subwoofer. Does the current amp have rca outputs?

 

[threeqz]

Yes it does