Marantz SR5008 standby heat. - Canadian TV, Computing and Home Theatre Forums

 
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post #1 of 7 (permalink) Old 2013-12-07, 06:26 AM Thread Starter
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Marantz SR5008 standby heat.

Hey guys.

Chris from Pickering Ontario here. I am new to the forum, this will be my first post.

I just upgraded my 12 year old sony Amp with a SR5008. This will be used mainly for my home theatre. It is in a cabinet with about 4" of air space above and gets crazy hot just in standby. Hotter when on even at minimal volume levels. I am going to add a couple cooling fans in the cabinet to cool her down.
My Sony amp never gets warm when powered off and never gets this hot even with volume up high.
Is this anything to worry about? Is it normal for this brand? I will put an bolt meter on her tomorrow to see how many watts she is using when powered but based on the heat output it's gotta be a lot.

Thanks.
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post #2 of 7 (permalink) Old 2013-12-07, 11:25 AM
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If you have the HDMI passthrough feature turned on, some AVRs use more power than in standby. The "HDMI Link" feature may also use more power when turned on. See the following FAQ, item 4, etc:

http://www.digitalhome.ca/forum/showthread.php?t=71112

When you connect the Watt-Meter, try the following options:

- AVR Standby
- HDMI Link off
- HDMI passthrough off
- AVR "on" at low volume
- AVR "on" at high volume (you'll find you really need to crank it to impact the power consumption)
- AVR "off" Plugged in, but turned off instead of standby (I assume it has that option - perhaps by the switch on the front of the AVR)

The newer AVRs often do use more power when on than older ones due to all the additional functionality they have. Of course almost all of the power goes to heat - imagine even a 40W light bulb in a confined space. Here's a power consumption thread.

http://www.digitalhome.ca/forum/showthread.php?t=35430


Here's a post useful for those new to the forum - FAQs, Search Tips, Optimization, etc:

http://www.digitalhome.ca/forum/showthread.php?t=57741
.

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post #3 of 7 (permalink) Old 2013-12-07, 03:08 PM Thread Starter
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Thanks 57.
About .62 Amps in standby. More like .80 with it turned on with a moderate volume level.
I drilled some holes in the glass door with a diamond bit and installed 2 x 90mm cooling fans on the back. Keeps it quite cool and I don't have to leave the door open.
I may require your services. I am useless with this stuff and having a hard time setting up 5.1 with this 7.1 amp. Using the audyssey mike it doesn't sense side speakers (cause I don't have any) and won't let me proceed. Nothing in the manual. I'm getting frustrated. Lol
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post #4 of 7 (permalink) Old 2013-12-07, 03:16 PM
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Sounds like you have "mis-thought" or "mis-wired" your surround speakers. The "side" speakers are the surround speakers and the "back" (rear surround) speakers are the ones you don't have. Regardless of the positioning of the "rear" speakers in a 5.1 setup, these are your surround speakers, not your back speakers. Looking forward to hearing from you and helping you optimize your home theatre. Lots of people make this (and many other) "oversight(s)", so their Home Theatres are far from optimized, so expensive equipment is not used to its maximum potential.

0.62 amps in standby is a lot - roughly 70 Watts!

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post #5 of 7 (permalink) Old 2013-12-07, 04:12 PM Thread Starter
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yep, 70 watts or so... I was actually surprised how little it uses when running. lol... I figured a few hundred watts but the bulk of my audio experience was from doing cars 20 years ago. 12v is alot different from 120.

You solved my speaker problem. Thank you. I still want to get you out to the house. I'm holding out till boxing day sales to replace my tv with a 60" 3d. I will be in touch soon there after... I saw your prices. Extremely reasonable for the expertise and quite frankly, I have enough hobbies and have no interest in spending the time to become an expert in home stereo.

Cheers
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post #6 of 7 (permalink) Old 2013-12-08, 12:48 AM
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Quote:
Originally Posted by pickeringchris View Post
...I was actually surprised how little it uses when running...
Although 50-100 Watts is pretty typical when on, most new AVRs only use 1-2 Watts in standby (if HDMI passthrough is disabled). If passthrough is on, I'd still only expect say 2-10 Watts, but perhaps Marantz "turn everything on" when using passthrough...

The standby number is definitely high and is costing you tens of $ per year in electricity. You may wish to contact Marantz and ask them if this is normal. This may be discussed in the specs for the AVR at the back of the operating manual, or in the section under HDMI Passthrough. Do you need Standby Passthrough? If not, turn it off.

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post #7 of 7 (permalink) Old 2013-12-08, 03:29 PM Thread Starter
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Based on a rate of $0.10/kwh it would cost $60 to leave on standby for a year. lol.... for now I shut the power off. Im gonna try and find out how to turn standby pass thru off as you said.

Cheers.
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