way to disable amp section of 3802?

Discussion in 'Archived Threads 2001-2004' started by Yoon Lee, Jun 8, 2002.

  1. Yoon Lee

    Yoon Lee Stunt Coordinator

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    Since I got Rotel power amp, my 3802 is acting as pre/pro only. But, its amp section is doing the job. Is there a way to disable amp section? I look through the manual, but couldn't find a switch for it.
     
  2. Selden Ball

    Selden Ball Second Unit

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    Selden
    There's no switch because you don't need to turn them off.

    As long as you don't connect a speaker to a particular output channel on the receiver, no current can flow through that section of the amplifier circuitry. Power = current x voltage. No current = no power.

    I hope this clarifies things a little.
     
  3. Jan H

    Jan H Cinematographer

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    Yoon,

    just connect the Denon's preouts (using an interconnect) to the Rotel and the amp section of the receiver will be bypassed. JH
     
  4. Yoon Lee

    Yoon Lee Stunt Coordinator

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    BTW, then, my receiver getting warm does not mean my receiver's power amp section in action?
     
  5. Jan H

    Jan H Cinematographer

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    No, mine gets warm, too. Denons run warm even when the amp section is deactivated. Maybe you have it an enclosed area?
     
  6. Mike_A

    Mike_A Stunt Coordinator

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    selden, there's still a bias current on the output transistors, which is what makes the amp get warm with nothing connected. depending on the amplifier class, this may be a significant amount.

    as far as i know, there's no way to turn the amp off still. having the amp on shouldn't hurt anything, but it will waste electricity and generate heat.
     
  7. Kevin. W

    Kevin. W Screenwriter

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    Yoon, what amp did you add to your setup?

    Kevin
     
  8. Yoon Lee

    Yoon Lee Stunt Coordinator

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    So Mike, it's gonna use as much electricity as it was driving my speakers?

    Kevin, I've got Rotel 1075.
     
  9. JohnSC

    JohnSC Stunt Coordinator

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    Good choice. I have an 1075 also. I am very impressed with it.
     
  10. Mike_A

    Mike_A Stunt Coordinator

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    Yoon, it won't use as much electricity (notice it doesn't get as hot), but it will use some (quite a bit most likely).
     

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