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Bridging Yamaha M4 Amplifiers into Monoblocks?

Discussion in 'Yamaha' started by billy_berrou, Nov 28, 2018.

  1. billy_berrou

    billy_berrou New Member

    Messages:
    11
    Hi,

    I have a C4 pre (with the dual stereo outputs) and I have an M2 Amplifier and two M4 amps so what I would like to do is hook up the M2 to one of the stereo outputs of the C4 and then run the two M4s as monoblocks (right and left) from the other C4 stereo output.

    This should give me about 1000 watts of vintage Yamaha sound!!

    Problem is, I've looked everywhere and cannot find any information on how to bridge the M4s.

    Does anyone have any information on how to accomplish this?


    [I also have the T1 tuner and the K2000 cassette deck so this is one sweet setup; now if only I had a couple of pair of NS1000M monitors to go along with it...]
     

     

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  2. avionic

    avionic " Black Knights " Subscriber

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    Last edited: Nov 28, 2018
  3. billy_berrou

    billy_berrou New Member

    Messages:
    11
    I understand that the C4 doesn't bridge, I just like the idea of using a single M2 on one C4 output and a pair of M4's on the other.

    I was under the impression that the M4 had an internal switch for bridging but maybe I was misinformed.
     
  4. avionic

    avionic " Black Knights " Subscriber

    Messages:
    44,639
    Location:
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    The C-70, C-80, and C-85 Have this circuit built in. It is a "normal" pre-amp out and an "inverted" pre-amp out circuit.
     
  5. avionic

    avionic " Black Knights " Subscriber

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    Grossly misinformed.
     
  6. stoutblock

    stoutblock If it sounds good, it is good... Subscriber

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    Location:
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    Do your speakers have seperate HF and LF terminals? If so, you can use the four channels of two m-4 amps without bridging them. As always, you have to be careful about the load the amp sees.
     

     

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  7. avionic

    avionic " Black Knights " Subscriber

    Messages:
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    Location:
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    Bi-ampping
     
  8. stoutblock

    stoutblock If it sounds good, it is good... Subscriber

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    Location:
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    Yes, but a way to use the power of two M-4 amps on a pair of speakers.
     
  9. avionic

    avionic " Black Knights " Subscriber

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    But still will need 2 each Y-splitters.
     
  10. Jazzmuso

    Jazzmuso Active Member

    Messages:
    169
    Location:
    Cape Town South Africa
    If I were in the US I would make an offer for one of the M4 amplifiers to go with my M4. Just cant find one around here in South Africa. You can then use M2 and M4 on the two outputs of C4 (which I also use). I would power NS 1000 with M2 and NS 690 with M4 .
     

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