Using Onkyo TX-SR875 as an external 2 ch amp?

Discussion in 'AV Receivers & Amplifiers' started by zamwessell, Jul 7, 2015.

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  1. zamwessell

    zamwessell
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    If i bought the Yamaha 3050 and wanted a full 7.1.4 set up,could i use my existing Onkyo TX-SR875 as an external 2 channel amplifier?

    Thanks
     
  2. dante01

    dante01
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    ermmm. I don't think it impossible, but then again I don't think it the most practical solution either. The Onkyo can't be configured to not process the signal as would be the case with a dedicated power amp so it would be effecting the audio associated with the speakers it is powering even if the source is the signal from the Yamaha.

    In the short term, connect the pre outs from the Yamaha to the front L and R multichannel inputs on the Onkyo and use the PURE DIRECT mode. You'd also need to set the volume relatively low onboard the ONkyo and then run the YPAO calibration on the Yamaha receiver. You'd then never again touch the volume dial on the Onkyo or the speakers it is powering wouldn't be levelled with those being powered by the Yamaha,
     
  3. zamwessell

    zamwessell
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    Ok thanks.

    Any recommendations of a 2 channel power amp that would be suitable?

    Ideally not too expensive
     
  4. dante01

    dante01
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    Which way are you thinking of going? Are you wanting the power amp to power your front speakers and use the internal amps to power the Atmos speakers or are you wanting to use the external amp to power the Atmos speakers?

    The former would probably mean you'd want to spend more money on a better power amp than you'd need if taking the latter route?

    What speakers do you have and what size of room will they be used in?
     
  5. zamwessell

    zamwessell
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    I have Monitor Audio Gold 10s at the front with a Monitor Audio Gold Center,M&K K-4s for the sides and backs.I was thinking of buying the Monitor Audio CT-265 speakers for the ceiling.

    I would use the power amp for whichever was recommended but i was thinking it would be for the Atmos speakers
     
  6. zamwessell

    zamwessell
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    i could just buy the Onkyo 3030 but have my heart set on the Yamaha 3050
     
  7. zamwessell

    zamwessell
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    The room is approx 6m x 2.5m
     
  8. dante01

    dante01
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    Hifi quality power amps are relatively expensive and even a low powered 2 channel amp will set you back in the region of £400 - 500. I therefore suggest you do as you suggest and look to use the external power to power the Atmos speakers with f on a budget rather than use it to power the fronts with. This will let you get away with using a less powerful and cheaper amp. The following is about as cheap as you can get. but lacking in power when compared to your receiver's own per channel capabilities:

    Superfi - Audiolab M-PWR Stereo Power Amplifier

    I'd maybe suggest looking in the classified section for used power amps with a bit more power although you don't need more than say 80 - 100 watts per channel to power the MA CT-265 speakers. An Emotiva XPA200 would be a good option if you can find one?
     
  9. zamwessell

    zamwessell
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    Thanks for the advice.I will check them out

    I would rather sell the Onkyo and use the money to part fund something like you have suggested.
     
  10. stephenbarnes

    stephenbarnes
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    I have a few 2 channel amps going see signature
     
  11. zamwessell

    zamwessell
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    I'll take a look,thanks
     

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