AV Receiver / Speakers Power Rating Matching

essaabbas

Hello everyone,
I would really appreciate if you could help me clarifying the following issue for me 

The specification sheet of my receiver (Onkyo TX-NR727) stats that the output power is 110 Watts per Channel (8 Ohms, 20 Hz 20 kHz, 0.08% THD) and I am planning to install the following 7.1 combination?
• QTY-1 Subwoofer PSW series PSW505
• QTY-2 Monitor 70 II (Front R+L) 275 Watt each
• QTY-1 Polk CS20 (Central) 175 Watt
• QTY-4 Monitor 30 II (Surround) 100 Watt each

My question, are those surround speakers (Qty-4, monitors 30 II) will be affected at high volume considering their max power rating is 100 W where is the amplifier will be giving 110 W.

ALSATIAN in USA

My response is NO!... In fact (under-power at full volume is dangerous, burn tweeter!)...Set your speakers also to "SMALL"

essaabbas

ALSATIAN in USA wrote: »

My response is NO!... In fact (under-power at full volume is dangerous, burn tweeter!)...Set your speakers also to "SMALL"

Thank you ALSATIAN, do you recommend me to upgrade them to M40 instead?

F1nut

Forget you ever read the max power stuff. Set your speakers to small. Consider buying a Pioneer Elite SC series the next time.

BTW, that 110wpc rating is with only 2 channels driven, with 7 channels driven your AVR is putting out 45wpc.

Test results, http://www.soundandvision.com/content/test-report-onkyo-tx-nr727-av-receiver-page-3

essaabbas

F1nut wrote: »

Forget you ever read the max power stuff. Set your speakers to small. Consider buying a Pioneer Elite SC series the next time.

BTW, that 110wpc rating is with only 2 channels driven, with 7 channels driven your AVR is putting out 45wpc.

Test results, http://www.soundandvision.com/content/test-report-onkyo-tx-nr727-av-receiver-page-3

Many thanks to you F1nut, I am new to this business and everyday I am learning

PolkieMan

What you want to do is let the sub woofer carry the bass (speakers set to small) that way you don't need as much power.
Bass and volume is where the power needs really goes up.
Also you don't need to play it so loud that your ears bleed okay.
You don't have a very large room, like 30 x 20?
Don't put your Onkyo in an enclosure because as it gets hot,
your power output goes down and so does the life
of you unit.
A rule of thumb is twice as loud means 10X the power.
My Onkyo never goes over 60, it's limited, and always comes on at 25,
set the limits on yours.

essaabbas

PolkieMan wrote: »

What you want to do is let the sub woofer carry the bass (speakers set to small) that way you don't need as much power.
Bass and volume is where the power needs really goes up.
Also you don't need to play it so loud that your ears bleed okay.
You don't have a very large room, like 30 x 20?
Don't put your Onkyo in an enclosure because as it gets hot,
your power output goes down and so does the life
of you unit.
A rule of thumb is twice as loud means 10X the power.
My Onkyo never goes over 60, it's limited, and always comes on at 25,
set the limits on yours.

Thank you PolkieMan for such great info, however, can you elaborate more on "A rule of thumb is twice as loud means 10X the power. "

PolkieMan

Well it is not as you think most of people would think that twice as loud is only 2x the power.
In order to understand this more clearly we have to look at decibels and watts.
Now I usually have my system a 70-80 decibels and in 2 channel mode, Onkyo pure Audio
(that's where you are getting the rating advertised like 105 WPC).

http://www.parts-express.com/mini-digital-sound-level-meter--390-722?utm_source=google&utm_medium=cpc&utm_campaign=pla

http://www.audiology.org/practice/resources/PublishingImages/NoiseChart16x20.pdf

Play around with this calculator and you will see what I mean, try changing the decibels from 80 to 90, wow see

http://www.crownaudio.com/elect-pwr-req.htm

essaabbas wrote: »

Thank you PolkieMan for such great info, however, can you elaborate more on "A rule of thumb is twice as loud means 10X the power. "