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added a power amp, and even in stereo mode amp is very hot?

Discussion in 'AV Receivers & Amplifiers' started by chedmaster, Aug 17, 2005.

  1. chedmaster

    chedmaster
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    ive added a power amp to my CA Azur 540R using pre-outs as usual.

    i assumed this would lighten the load on the av amp as it wouldnt have to amplify the L and R speakers, but watching a DVD in stereo (i.e. just L and R) still results in a very hot amp, as if its still amplifying.

    I assumed that with the speakers disconnected, the circuit would be broken so no current would flow (i.e. no heat?). Its as hot as running in stereo prior to adding the power amp. I can't turn the L and R off in the CA's menus, can you in most AV recievers? is that what im missing?

    Surely the processing can't be producing all this heat? :confused:

    any help greatly appreciated :)
     
  2. alexs2

    alexs2
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    It will certainly reduce the load on your receiver,but will not stop the redundant amplifier stages using some power,albeit the amount used at idle.

    The other amplifier channels will also still be using power,plus the pre/processor sections,so you what you describe isn't unusual.

    As to turning off amplifier channels within receiver control menus,I'm not aware of any that allow you to do that.
     
  3. chedmaster

    chedmaster
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    thanks alot :thumbsup:
     
  4. Falp

    Falp
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    Processors are computers, computer run very HOT... :rolleyes:
     
  5. alexs2

    alexs2
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    Good point,as anyone who owns a Dual Processor TAG AV32R will be well aware of.
     
  6. eviljohn2

    eviljohn2
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    Also don't forget that the input transformer (part of the units PSU) will also still be running hot. I find that this is probably the hottest part of my Marantz even with it's current feedback design which is a topology renowned for being hot. :)
     
  7. psflynn

    psflynn
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    Chedmaster, what power amp have you bought ??

    Noticeable improvement?

    Cheers
     
  8. chedmaster

    chedmaster
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    its my dad's old nytech bout 20 years old but very very good! vocals are much clearer and more detailed and theres less bass than im used to id say its improved music (in my opinion) by 30% and movies slightly more, the centre channel is liberated and the rears feel more punchy. some technical terms in there :D
    id say its definately worth it up to about half the price of the amp.
     

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