Stereo Speaker Rewire - 2007 270 SLX

Discussion in 'Electronics Q&A' started by BleednBlue, Jul 19, 2016.

  1. BleednBlue

    BleednBlue Member

    161
    Jul 22, 2015
    Lake Of The Ozarks
    270 SLX
    Merc. 496 MAG Bravo III
    I like the equipment but think I can do a better job rewiring my current setup for better sound.
    Current Equipment:
    Head Unit: Sony CDX-H910UI
    Amp: Rockford Fosgate Punch P400-4
    Sub: Rockford Fosgate 10" sub x1
    Speakers: Rockford Fosgate 6.5 speakers x6

    Two speakers are located in the bow. Two speakers are located midship. Two speakers are mounted aft. The sub is mounted in front of the cooler compartment.

    The current wiring scheme seems a little odd to me. The bow speakers are wired to the hu front speaker wires. The midship and aft speakers are wired hu rca front to the amp rca front and rear (possible wired in series). Finally the sub is wired to hu sub speaker wires. While the wire scheme sounds okay, there is nothing wired to the hu rear ouputs and the sub does not hit very hard.

    I would like to change this by doing the following.
    1. Add a mono amp for the sub in same location of sub (hu rca to amp rca)
    2. Wire the bow and midship speakers in parallel (via hu rca front to amp rca front)
    3. Wire the aft speakers to hu rear (via hu rca rear to amp rca rear)

    I've been through the boat and understand how the current wiring is run (gunwale / ski locker). So after all this hopefully useful information my questions. Is there a good method of removing current wire and adding new wire? Are there some useful tools? Do seat backs need to be removed?

    Thanks for your time.
    Rich
     
  2. bahamabreisus

    bahamabreisus Well-Known Member

    Oct 25, 2007
    Hampstead NC
    500 dancer, previous 420,390,300 dancers
    detriot 8v92
    You should not have run new wires to all speakers. Place new amp near existing amp and connect speaker wires to amp that are now
    directly wired to head unit. Run RCAs to amps. you should be good to go.
     
  3. tdgard

    tdgard Member

    342
    Jun 4, 2013
    Atlanta, GA
    05-270 Sundeck
    496 w/Bravo III
    Can't speak for the slx but the sundeck is very similar. I did not strip out the old wire-just ran new along side of it with the exception of the starboard rear. It's a real sob to run and I just reused the old. The others were pretty straightforward and I did not have to remove anything. Make sure your current amp will handle a 2ohm load if you want to run in parallel. I'd also rethink placing the bow and midship speakers together. I put the aft and midship speakers together. The windshield is a nice dividing line on the boat and I find it useful to be able to turn on or off the bow or cockpit with the fader.
     
  4. BleednBlue

    BleednBlue Member

    161
    Jul 22, 2015
    Lake Of The Ozarks
    270 SLX
    Merc. 496 MAG Bravo III
    Thanks for the responses.
    My thought originally but the fire extinguisher is using that spot. Guess I could move the fire extinguisher but where???

    Good thought. If I decide to tackle this project I will do this.

    Think this only applies to running in series. Parallel one needs worry about output watts.:huh:
     
  5. tdgard

    tdgard Member

    342
    Jun 4, 2013
    Atlanta, GA
    05-270 Sundeck
    496 w/Bravo III
    No. Series is additive. Parallel is subtractive. 2 4ohm speakers in series is 8 ohms. 2 in parallel is 2ohms.
     
  6. tdgard

    tdgard Member

    342
    Jun 4, 2013
    Atlanta, GA
    05-270 Sundeck
    496 w/Bravo III
    Quick funny story and not meant to hijack your thread. I'm an electrical engineer, my dad is an electrical engineer, and his dad was an electrical engineer. My dad is as deaf as a post so we had a guy come to the house to get him a hearing aid. All was going well until the salesman started getting into the technical aspects. The moment he stated how many o-HEMS there were in the hearing aid all was lost. My dad then started putting the hearing aid on the dogs.
     

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