Any receivers capable of this?

Discussion in 'Archived Threads 2001-2004' started by RichardMA, Sep 9, 2002.

  1. RichardMA

    RichardMA Second Unit

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    Say I wanted to separate amp the channels in my
    receiver, but I also wanted to use the receiver's
    own amps as the higher frequency driver amps
    in a bi-amp situation. Is it possible, using say
    a splitter on the channel outputs to route the signals
    to both the outboard amps and the internal amps?
    Or would the receiver know you were taking the line
    signals out of the amp path initially and would prevent
    you from using the power amps? Older receivers used to
    have provisions for interposing add-ons like Dolby noise reduction devices, etc, then you could route the
    line signal back to power amplification. Would different impedences of the internal versus the outboard amps interact negatively if a split output was used on the line signals?
     
  2. Duke

    Duke Stunt Coordinator

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    I did this with my b&k 307, I used the internal amps of the L&R to power the tweeter/mid of my paradigm 100's and a seperate amp to power the woofers, the b&k307 has line outputs that can be used, it worked great. the only down side was if i used head phones, the seperate amp did not have a trigger it only had an auto on, so I had to manual turn it off when I used the head phones.
     
  3. Paul Clarke

    Paul Clarke Supporting Actor

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    I believe output from the internal amps is always available if there are speaker connections. I intend on doing the same thing with my 510/855A setup. I'll post here if it doesn't work.

    Edit: Just got back from switching the high/mid wiring and it works fine. I like the slightly finer detail I get from the 510 in the highs/higher mids.
     
  4. Lewis Besze

    Lewis Besze Producer

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    Most Denons will let you do that.
    It seems that some Yamaha models don't[DSP A-1 for sure doesn't]
     
  5. RichardMA

    RichardMA Second Unit

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    Thanks for the responses. It seems that using
    a receiver as a "prepro" has advantages I hadn't
    previously thought of. And since there are fewer
    prepros available than a few years back, it makes
    still more sense to use one.
     
  6. Frank Carter

    Frank Carter Screenwriter

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    My two Yamaha's did it(RX-V995, HTR-5280/RX-V800)
     
  7. Jonathan M

    Jonathan M Second Unit

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    I guess the ideal is to get a receiver with both pre-outs AND main ins. For some bizarre reason, most don't have this feature. Then, true biampimg with active crossovers is possible. The main problem with biamping on a receiver with pre-outs but no main-ins, is that the crossover on the speakers is still passive, ie the internal amp is still amplifying the full bandwidth signals. Once the lows have been filtered out, the amps load is much easier! Even a cheap receiver would be able to provide enough power to run just mids + tweets.

    I believe the new NAD gear (T752/762) have pre-outs and mains in, and some of the H/K range do as well (520 and above I believe.) You could always get a cheap one and modify it (Although some buffers may need to be inserted before the pre-outs)

    Cheers
    Jonathan
     

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