Couple of questions about av receivers

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heavyusr

49 posts

Geek

Topic # 113014 2-Jan-2013 12:47
I have never had an AV receiver before so bear with me. Found one I like http://www.noelleeming.co.nz/shop/audio-mp3/home-audio/rack-stereo-systems/pioneer-vsx922-7-1-channel-3d-a-v-receiver/prod161199.html More info about it http://www.pioneer.eu/eur/products/42/98/405/VSX-922-K/specs.html Listed as Output Power per Channel 150W, Power Consumption (in use / standby) 550 W / 0.30 W If I power it on will it use 550W of power even if no speakers are connected to it? If I connected 1000 watt speakers(listed below) to it and have the sound at 50% will the AV receiver be using 550W of power? http://www.noelleeming.co.nz/shop/audio-mp3/home-theatre/panasonic-sc-btt190gnk-sc-btt190-home-theatre-system/prod117237.html Is it possible to connect a freeview stb into the AV receiver via HDMI then connect the AV receiver into my TV using HDMI and use the TV speakers to play the sound instead of the speakers connected to the AV receiver? Am I right in saying as long of the power output of the speakers is the same or below what the AV receiver outputs I will be fine? Because TV speakers would probably use alot less power than external speakers.

1324 posts

Uber Geek

Reply # 739369 2-Jan-2013 13:14
heavyusr: Am I right in saying as long of the power output of the speakers is the same or below what the AV receiver outputs I will be fine? Because TV speakers would probably use alot less power than external speakers. No, other way around. The power rating of a speaker is not the power that it draws, but the maximum it can thermally dissipate (handle before it blows up!). How loud you have the volume will determine the power fed to the speakers, and to a lesser extent, how much the amp draws from the mains.

41 posts

Geek

Trusted

2degrees HB

Reply # 739373 2-Jan-2013 13:23
The 550w is the maximum Watts it can draw from the wall, Most power amps are only about 50% efficient (some digital amps are better) so around 250w output power - Probably a fair bit less due to the power needed to light the amp up and do the processing etc, Then divide by number of channels = only about 35 watts per channel. The general rule is that you should have a more powerful amp than what your speakers are rated at because clipping (amplifier distortion) is much more likely to kill your speakers because most people don't know what it sounds like and will leave the amp going at that volume or turn it up even more whereas speaker distortion is easy to hear and people will turn it down when they hear it. My opinions are purely my own and are not at all those of my employer 2degrees.

949 posts

Ultimate Geek

Reply # 739409 2-Jan-2013 16:10
Toledo: The 550w is the maximum Watts it can draw from the wall, Most power amps are only about 50% efficient (some digital amps are better) so around 250w output power - Probably a fair bit less due to the power needed to light the amp up and do the processing etc, Then divide by number of channels = only about 35 watts per channel. The general rule is that you should have a more powerful amp than what your speakers are rated at because clipping (amplifier distortion) is much more likely to kill your speakers because most people don't know what it sounds like and will leave the amp going at that volume or turn it up even more whereas speaker distortion is easy to hear and people will turn it down when they hear it. +1 550w is the max it can draw at full output. Power used is related to volume you listen at. Just a few watts can produce a lot of volume in the average room. At full power you probably could listen to it happily in your neighbour's lounge and have a visit from the Council Noise Control people. You'll barely notice the difference in your monthly power bill.

10 posts

Wannabe Geek

Reply # 739441 2-Jan-2013 17:45
What features make you want to get the the Pionerr 922? ( http://www.whathifi.com/review/pioneer-vsx-922-k ) How about this one. Is on sale in JBHiFi for $590 ( http://shop.jbhifi.co.nz/hi-fi-home-audio/amps-receivers/onkyo-tx-nr515-7-2-channel-home-theatre-receiver/57111 ) Got a good review http://www.whathifi.com/review/onkyo-tx-nr515 or http://www.whathifi.com/review/sony-str-dn1030 $1188 again JB Hifi A.

1404 posts

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Telecom NZ

Reply # 739470 2-Jan-2013 19:10
afe66: What features make you want to get the the Pionerr 922? ( http://www.whathifi.com/review/pioneer-vsx-922-k ) How about this one. Is on sale in JBHiFi for $590 ( http://shop.jbhifi.co.nz/hi-fi-home-audio/amps-receivers/onkyo-tx-nr515-7-2-channel-home-theatre-receiver/57111 ) Got a good review http://www.whathifi.com/review/onkyo-tx-nr515 or http://www.whathifi.com/review/sony-str-dn1030 $1188 again JB Hifi A. Onkyos are very very feature rich but they frequently have reliability issues. It's not just one or two models, or one or two people either... They really skew the feature/quality tradeoff wayyyyy towards features. Cheers - N ps. Have had 3 Onkyos, all had hardware failure, have had a Pioneer and now a Yamaha and both have had no issues.

1781 posts

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Subscriber

Reply # 739489 2-Jan-2013 20:59
$1499 is priced for that Pioneer... That's not far off RRP - and you can get the next amp up (VSX1122 for less, easily less). And the next question, is, how does it sound? Do you like the way it functions? The GUI? The calibration options, the number of HDMI's... you get the point. Oh yeah, the next thing... The power rating they've listed has been achieved by fudging the figures (one channel measured with a high level of distortion etc). Next. The speakers you've listed are NOT designed to work with the Pioneer receiver, let alone with anything else that isn't the Panasonic home theatre unit that comes in the box... You'll want to find a separate set of speakers, oh yeah, and most importantly, listen to them first!