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Power consumption of av receivers

25105 Views 34 Replies 5 Participants Last post by  Lordoftherings
I have seen this on another forum and no one answered the question it goes as follows

Pioneer Vsx-21txh power consumption 400 watts with 110wpc

Denon 2310ci power consumption 708 watts with 105wpc

Onkyo TX-SR707 power consumption 720 watts with 100wpc

now my question is it seems as power consumption goes up watts per channel go down, pioneer seems to get more wpc with less power consumption are the pioneer numbers possible or are the other 2 just inefficient. any thoughts on this.
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to my understanding this pioneer doesn't use the ICE amps those are reserved for their higher end models.
So is it possible that it can't deliver the 110wpc as promised.
I have tried to find reviews of the pioneer vsx-21txh can't find any only the higher end models seem to have reviews right now. it seems to me like we are the only 2 on this forum so far today because I haven't heard from anyone else on either of the 2 topics I have posted today I would like have more people join in on the fun.
I have gone to the pioneer website and looked at specs this what they say
Surround Power 110wx7(20Hz-20kHz,.09% THD @ 8 ohms, All Channels Driven)
and if you look at page 119 of the manual same specs with the words Continuous average power output of 110w*per channel
*measured pursuant FTC trade regulation rule on Power Claims for Amplifiers
have no ideal what that means
So if we do the math,say 400w divide that by 7 it's more like 57.142857wpc this seems possible.So how did this receiver get THX certified select2 plus with these numbers when there are countless other receivers that have better real world numbers then this. IMO there should be a better standard the the one the FTC has especially when it comes to AV receivers no more loopholes. This way if they claim our receiver puts out x amount wpc it's a real world number not test tones at x amount of Hz or kHz but with music or movies because that's what it is used for by the consumer. There has be a better way of doing this. If the power consumption specs that are in the manual and on the back of the receiver is a mistake that's a pretty big mistake to miss.
This is most unfortunate because there a lot of newcomers to HT who won't do their homework and get burned in the process because there isn't a clear standard. HK seems to be doing it right but I know a lot of people who look at these numbers and say that's enough power and end up getting HITB because it claims it puts out 100wpc when it only consumes 90w.
It is great thing I came across this site during my research, I was going to buy that pioneer but had a tough time finding reviews on it the I came across that question in another forum and said to myself how come nobody is addressing it, so I looked at other forums to post it myself and decided on this one and without fail it was addressed. My hope is that the OP from the other forum comes across these postings to see that his or her question was answered. Then he or she can join us here on the Shack.
My question is how can a receiver consume 400w and be able output 110wpcx7 the math doesn't add up.unless there is something I am missing please explain.
Steve thank you, this is what I was trying to understand personally I thought the numbers were bogus the math made no sense and I went to public school. In my mind there is noway it could put out more power then it was taking in. P.S. And may your receiver watts always be plentiful.
Thanks to all you guys for taking the time to answering the question. It was enlightening, just wish manufactures were more truthful with their specs.
Well that will never happen unless we as the consumer demand it, I talking about the hardcore HT guys & gals (can't leave out the gals or I'll letters about it) not john public for who any old system will do. We could try talking to them,that won't work so we need to explain it in a way they understand, give us honest specs or NO CASH, then they will get it or government can step in and demand it but short of all that people have to do there homework and question everything. The one thing I learned most of all is to look at the power consumption to see if it is possible in regards to the watts per channel.
Thanks Tony, I knew there was something else missing when I wrote that.
This is good to know and thank you for taking the time to explain it, all these numbers make it a little confusing when you don't have enough knowledge on this matter. This is way I posted this ? so people like yourself could share your knowledge with me and others like me who don't have a clue once again thank you.
Thanks Tony, I like the info that you guys give me the more I know the less chance these retailers have to take me for a ride.
Ok maybe I should find another hobby like stamp collecting or baseball cards (just kiddin) now Bob said that the pioneer is an A/B amp got that part I took another look at their website it says
Amplifier Design: A.D. Energy?
does this mean it's an A/D amp? is it possible? see this is why I am a little confuse the info Tony linked me to never said anything about this.
Bob I thank you for your time and your advice, there are few people who would have gone to the lengths that you did to share your knowledge with a newcomer for this I am truly grateful. There are those who think maybe I ask to many questions,I only ask because you and the others who took the time to answer are further along in this game then I who better to ask then those who have the wisdom. May your days be filled with happiness and prosperity. Thank You.
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