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  1. #1

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    Default AVR power consumption

    Just curious. My AVR states that it uses 360 watts during use. However, I'm not using all the channels..so is it using less power? Does it ever use the 360 watts of power??
    My 3.1 HT setup: Pioneer SP-FS52x2, Pioneer SP-C22, SVS PB1000, Denon AVR 1613, PS3 slim, Samsung 46" 3D TV.
    My 2ch Music setup: Polk R40s, Yamaha RX-496 stereo receiver, Auvio Bluetooth w/NFC Music Receiver, JSI DVD/CD Player with HDMI upconvert.

  2. #2

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    The AVR will consume less power at normal listening levels. It will probably approach the stated power consumption only when pushed to its limits in multichannel use.
    Last edited by Glen B; 03-11-2014 at 11:40 PM.
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    Quote Originally Posted by felipe View Post
    Just curious. My AVR states that it uses 360 watts during use. However, I'm not using all the channels..so is it using less power? Does it ever use the 360 watts of power??
    Hope your not equating power consumption to power output....if that's the purpose of the question.

  4. #4
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    Quote Originally Posted by tonyb View Post
    ....if that's the purpose of the question.
    What is the purpose of your question? And no, the rating on the back is usually the maximum sustained power consumption.

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    Tony is right, there is no simple conversion from power input to power output. Many factors intervene. Let me give a simple example from my deep past. One of my first AVRs was a Panasonic class D unit that pulled in 135 watts according to its back panel. Yet, this unit was tested at about 70 watts x 5 in the surround mode or 350 watts at RMS top output. The same is true if you look at Pioneer's ICE amps, their surround rating exceeds the input wattage on the back.
    Among other things there is the question of what kind of storage capacitance the AVR has, it's power supply, and high current capability. Plus what class it is: A, A/B, D, etc. with A being the least efficient, dissipating most of its current in heat.

    In the golden age of receivers, the stereo receivers of the 60s and 70s you could "sometimes" take the input wattage and divide by 4 to give you a rough estimate of what a single channel's max might be. But that didn't always work either.

    The short answer to "does my AVR ever run at maximum wattage" is you better hope it doesn't because it will clip!

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    Quote Originally Posted by zingo View Post
    What is the purpose of your question?
    Don't believe I asked one...simply a statement.

    Power consumption numbers posted on the back of receivers...or other audio gear means little unless your worried about a few bucks in your monthly electric bill. My statement was more directed at the misguided beliefs some have with power consumption as related to power output....which really have nothing to do with each other.

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    Quote Originally Posted by tonyb View Post
    My statement was more directed at the misguided beliefs some have with power consumption as related to power output....which really have nothing to do with each other.
    isn't that the truth...I do not know how many time I've had this argument with people. Some swear that the ???watts on the back is how many watts per channel it has...

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    Exactly pal....which is why I made the statement and was hoping the OP wasn't eluding to that. No harm no foul anyway.

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    If you really want to know, Kill A Watt EZ can be had for ~$25. Claimed accuracy is .2% (point 2, or two tenths percent). It will display watts, amps, you can even code in what you pay for power and get a cost to run display. It has 15A capacity.

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    Quote Originally Posted by tonyb View Post
    Don't believe I asked one...simply a statement.
    Sorry, my question was supposed to be directed towards the OP...

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    Quote Originally Posted by tonyb View Post
    Hope your not equating power consumption to power output....if that's the purpose of the question.
    That wasn't the purpose of the question at all lol. I was just curious about whether or not if it actually used the all rated wattage to operate.
    My 3.1 HT setup: Pioneer SP-FS52x2, Pioneer SP-C22, SVS PB1000, Denon AVR 1613, PS3 slim, Samsung 46" 3D TV.
    My 2ch Music setup: Polk R40s, Yamaha RX-496 stereo receiver, Auvio Bluetooth w/NFC Music Receiver, JSI DVD/CD Player with HDMI upconvert.

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    Quote Originally Posted by felipe View Post
    That wasn't the purpose of the question at all lol. I was just curious about whether or not if it actually used the all rated wattage to operate.
    See post #9 that is the only why to truly tell.

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    yeah the wattage on the back of the amp should be worst case draw from the outlet and as others have stated that happens under very heavy load, generally the avr will have a short life if it's pushed that far for a long amount of time
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