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Bi-amp using multizone?

Discussion in 'AV Receivers & Amplifiers' started by john-boro, Mar 2, 2003.

  1. john-boro

    john-boro
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    Ive got a denon 3802, and the surround back channel is not in use. Therefore is it possible, if I switch the surround back power amp to "multizone", to biamp the front channels? I was thinking of wiring the treble drivers to the multizone terminals, bass to the normal front ones, then switching the multizone source to the same as the rest of the amp. What problems, if any, could this present, particularly with 5.1 movies and music.
    cheers
    john :)
     
  2. magking

    magking
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    It will probably make no difference as the amplifier only has one powersupply anyway. But you can always try it out.
     
  3. sounddog

    sounddog
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    That won't quite work ... at least not for AV sources as you will be feeding (i.e. for DVD player) the downmixed stereo to the treble, and the post processed front channels to the bass of the speakers.

    The only thing which (may) work is feeding the front pre-outs, back into a spare analogue input, then selecting that input for the second zone.

    Note: I've never tried this but it may work.

    Vikki
     
  4. cdb

    cdb
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    On my sony strdb 930 I've connected the A+B speaker outputs to the two sets of inputs on my mission 773es. It seems to have worked ok for the past few years.
     
  5. sounddog

    sounddog
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    cdb ... yes that works ... but the A & B speaker terminals are just parallel connections off the same poweramp - this is just bi-wiring, not bi-amping.

    Vikki
     
  6. cdb

    cdb
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    ok :D I knew it was bi-something
     
  7. john-boro

    john-boro
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    just another question, I've got a technics su-c04 lying around. Will I notice an improvement if I use this to drive the treble terminals on the speaker, or am I better off sticking with using the denon?
    cheers again
    john
     
  8. dood

    dood
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    Just use the denon. Tonal matching and levels may be a problem. Bi-wire if you must.
     
  9. fraggle

    fraggle
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    john-boro,

    Can you let us know if bi-amping the fronts makes any difference for you?

    I've got the same amp and the front speakers are biwired and it'd be nice if bi-amping made an improvement.

    It should do, providing the multi zone amp modules are of an equal quality to the mains.

    Just thought, if you've got the L+R pre outs connected to say VDP and the multi zone switched to VDP, everything will work fine unless you select VDP as the main input. Then you'll have a direct feedback loop. Oh, if manufacturers would only provide pre outs and power in phono connects on their amps, just link for normal use and unlink and play for "non-ordinary" use.
     
  10. sounddog

    sounddog
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    Like on the NAD T752 - a totally irrelevant comment but just to prove some people do!!
     
  11. nathan_silly

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    Audiolab 8000S. Hasn't got the links, but it's controlled via mode switch.
     
  12. sounddog

    sounddog
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    I think Fraggle was meaning on AV amps.
     
  13. nathan_silly

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    ooops! (In a Abe voice) :D
     
  14. john-boro

    john-boro
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    no not really any improvement by bi-amping. That's probably largely due to the fact that the only two options were use a 30 year old technics amp for treble, or do what victoria suggested and loop the front pre-outs to the vdp, and the complication of this probably just complicates it too much to be an inprovement. However, I did just try Bi-wiring and it made a hell of a lot more difference :eek:. Incidentally the wires were simply nice chunky wire that came with a neutrik cable (some italian make, very thick and lots of copper :) ) for the bass, and the white wires that came with my cambridge soundworks PC speakers. very nice :)
    john
     

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