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  • Amp Bridging Question


    I'm wondering if the channels in my Sony headunit can be bridged. It is 4x23 rms and if I could get say 2x35 or something I would change my system around a little. If so, how would it be wired? TIA!

    bb

    Since we cannot know all that there is to be known about anything, we ought to know a little about everything.
    - Blaise Pascal (1623 - 1662)

  • #2
    Re: Amp Bridging Question


    > I'm wondering if the channels in my Sony
    > headunit can be bridged. It is 4x23 rms and
    > if I could get say 2x35 or something I would
    > change my system around a little. If so, how
    > would it be wired? TIA!

    > bb

    Unless the info supplied with the unit specifically states its bridgeable then NO. Bridging is more than just the wiring from the amp to the speakers. It requires the amp to have an inverting circuit on one of the channels to invert the signal 180% from the other. It also really stresses components of the amp circuitry and the amp should be designed for that type of use to begin with.

    Dick M.




    (Originally posted by: Dick M.)

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    • #3
      Re: Amp Bridging Question


      > I'm wondering if the channels in my Sony
      > headunit can be bridged. It is 4x23 rms and
      > if I could get say 2x35 or something I would
      > change my system around a little. If so, how
      > would it be wired? TIA!

      > bb

      Bob, this is a common question, and unlike the low powered units of old the new high power units cannot be bridged. The reason is that they are already "bridged" internally to produce the maximum power possible available at 12V. 35W into 4 ohms at 12-13.8 volts is impossible, so we know that's a maximum power figure. Realistically, you will receive ~18W of undistorted output power. That's quite a bit in a home, but not enough in a car, as you've probably found out.

      An outboard amplifier is a good idea.

      Comment


      • #4
        Re: Amp Bridging Question


        Thanks guys. I thought that was what the answer was but now I have confirmation. No doubt I will be changing my system around again but not in that way.

        bb

        > Bob, this is a common question, and unlike
        > the low powered units of old the new high
        > power units cannot be bridged. The reason is
        > that they are already "bridged"
        > internally to produce the maximum power
        > possible available at 12V. 35W into 4 ohms
        > at 12-13.8 volts is impossible, so we know
        > that's a maximum power figure.
        > Realistically, you will receive ~18W of
        > undistorted output power. That's quite a bit
        > in a home, but not enough in a car, as
        > you've probably found out.

        > An outboard amplifier is a good idea.


        Since we cannot know all that there is to be known about anything, we ought to know a little about everything.
        - Blaise Pascal (1623 - 1662)

        Comment

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