Amp planner opinions for g21

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  • scottb7
    1,000 Post Club Member
    • Aug 2011
    • 2198

    • Carson City, Nevada

    • 2014 G21 (Current) 2008 SANTE 210

    #1

    Amp planner opinions for g21

    Living on a small lake I am never going to use the 4 tower speakers on my 2014 g21. The neighbors already don't like my large boat. So I am thinking I should re-purpose the amp running the tower speakers:

    This is how everything is currently wired from factory
    • Speakers
      • Dxi651
      • 4 ohm 60w continuous /180w peak
    • top-pa d4000.4
      • tower speakers
        • 125w x 4 @ 4 ohm
        • 200w x 4 @ 2 ohm
        • 1 tower left a
        • 2 tower left b
        • 3 tower right a
        • 4 tower right b
    • bottom-pa d5000.5
      • 70w x 4; 200w x 1 @ 4 ohm
      • 100w x 4; 400w x 1 @ 2 ohm
      • 1 ch front right – bow right – 1 speaker 70w
      • 2 ch front left – bow left – 1 speaker 70w
      • 3 ch rear right – cabin right front 35w
      • 3 ch rear right - cabin right back 35w
      • 4 ch rear left – cabin left front 35w
      • 4 ch rear left – cabin left back 35w
      • 5 ch sub – 10 inch
    First thing that surprises me is that the cabin speakers (all 4 of them) are sharing 2 channels, cutting the power to them. While no one is in the bow hardly ever.

    Tell me if I am wrong but here is what I am thinking I should do:

    *pa d4000.4 use the 4 channels for the 4 cabin speakers - this moves each cabin speaker from 35w each speaker to 125w each....NOTE A FRIEND SAYS I AM WRONG AS OHMS GO DOWN AND WATTS GO UP...IS HE RIGHT?
    *pa d5000.5 leave sub as is and leave bow speakers as is. I could bridge the 4 channels but would be too high for the bow and I don't use the bow much.

    What do you think? I believe the sub has to stay on the sub channel due to high/low pass and all that stuff.

    Other ideas?

    
    Last edited by scottb7; 04-02-2017, 06:26 PM.
  • MLA
    1,000 Post Club Member
    • Dec 2009
    • 1312

    • Lake Wylie NC Area


    #2
    With 2 4 ohm speakers wired in parallel to one chnl, the output is actually 100W, so a net of 50 to each speaker, rather than 35. With two speakers, the chnl output goes from 70W to 100. Now, in reality, there is is not going to be a real difference between 50 and 70. However, you've double the speakers in the cabin when you went from 70 to one speaker to 100 to 2 speakers per chnl.

    Sub will stay on the 5th chnl of the 5000.5 as theres now where else for it to go.

    Not saying dont do it, just dont expect a seat of the pants improvement by simply moving speaker wires. Id re-tune the system first, if you havent.

    Comment

    • scottb7
      1,000 Post Club Member
      • Aug 2011
      • 2198

      • Carson City, Nevada

      • 2014 G21 (Current) 2008 SANTE 210

      #3
      agree, but on the other amp, they would get 125w @ 4 ohm vs 50w at 2 ohm...so difference is not 50 to 70, it is 50 vs 125...worth it?

      Comment

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