Understanding Power ratings - AVS Forum
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post #1 of 4 Old 07-14-2013, 12:38 AM - Thread Starter
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I am looking to replace my Yamaha RX V657 receiver as it lacks HDMI ports and the newer HD surround formats. This receivers power is rated RMS is 95wpc (20hz-20khz). Now when I am looking at receivers I see power stated as 80wpc rms 2 channels driven or 115watts 1 channel at 1khz. Can anyone suggest a Yamaha reveiver around the $500-$600 mark that has decent RMS rating on all channels (20hz-20khz)
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post #2 of 4 Old 07-14-2013, 01:02 AM
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I am looking to replace my Yamaha RX V657 receiver as it lacks HDMI ports and the newer HD surround formats. This receivers power is rated RMS is 95wpc (20hz-20khz). Now when I am looking at receivers I see power stated as 80wpc rms 2 channels driven or 115watts 1 channel at 1khz. Can anyone suggest a Yamaha reveiver around the $500-$600 mark that has decent RMS rating on all channels (20hz-20khz)

Take the power ratings with a grain of salt. Unless of course it is specifically stated as "All Channels Driven". AVR manufacturers measure their equipment differently and that ironically is very misleading for end users.

Those 95wpc in real-world use (5 channels driven) would be somewhere close to roughly 40wpc and even lower when more than 5 channels are in business. But having said that, one doesn't require that much power in an HT setup if a subwoofer is also employed. Coz the power hungry spectrum i.e. 80hz and below is routed to the self-powered subwoofer, which is capable to handle bass frequencies far better than any but the very very expensive speakers. So, AVR does not have to work hard unless you are running your speakers as full range or speakers with low impedance and/or sensitivity.

What speakers are you using?

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post #3 of 4 Old 07-14-2013, 01:11 AM - Thread Starter
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I am using Klipsch RB 51's, 41's and RC52 centre. I believe they are all in 90+db sensitivity range.
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post #4 of 4 Old 07-14-2013, 01:19 AM
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You should have no problems driving those speakers to beyond reference levels in movies and also in music IF you are using subwoofer. Just run them all as small and even an entry level avr can easily drive them.

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