Wiring Dilemma Help Please

[GeorgeMcNelia]

HI Everyone,

I have a bit of experience wiring car stereos in the past. I have a stereo system in my Hot Tub. It is a AM/FM CD Marine radio. Poly Planar SRD60. The system has 2 speakers and a powered sub. I wanted to add 2 more speakers externally. My problem is that the sub is wired to the left and right rear speaker leads. The sub does not have RCA in only 2 wires connected to the leade of the radio. I was going to connect the 2 new speakers to the rear output from the radio but this leaves me with no connection to the sub. Poly Planar sell an interface module that will give me a RCA out for a SUB. My question is how do I connec from RCA to speaker wire into the sub. The sub is powered. Any help would be great.

Thanks

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[Chevyaudio 5,000+ posts]

its a powered sub? I guessing like the BassLink thing that Infinity has, did you install this system or did it come with the hot tub. If it is powered it should have some kind of RCA input.

 

[GeorgeMcNelia]

Itwas installed from the manufacturer. I talked to them but they just want mw to buy more stuff. Another amp for the two extra speakers and run the m seperate. I really did not want to do that.