Originally Posted by dc6284
I just bought the 7008 from Cruchfield and I was wondering if its strong enough for my Klipsch rf-82 ii's, rc-62, rb-61...
Also hoping I made the right choice. Budget was $1000.
Upgraded for a Sony dh550.
Welcome to AVS!
The Klipsch speakers are horn type and generally very efficient speakers. The technical specs of the Klipsch rf-82 ii have a sensitivity of 98dB/W/m, which means at a distance of 1m from the speaker and with just 1 W of power, the Sound Pressure Level (SPL) is 98dB in your room. That's really loud and most would want to turn it down else there is a risk of hearing damage. The same thing for the Klipsh rc-62.
How far away will you be sitting from the speakers? The reason I ask is because SPL drops by 6dB when the distance is doubled. So if you're sitting at 2m away from the Klipsch rf-82 ii, the SPL drops to about 92dB, which is still pretty loud.
Double the distance again to 4m (13 feet) and the SPL drop to around 86dB.
Around 85dB at the Main Listening Position (MLP) is generally referred to as Reference Level. You're able to achieve that with just one speaker and with 1W of power.
Once you start to add additional speakers such as the second Klipsch rf-82 ii for a two channel stereo pair, then a center channel with the Klipsch rc-62, for a total power requirement of just 3W - there's going to be an increase in SPL at the MLP. You'll more than likely would turn it down.
The SR-7008 is rated for 125W per channel in two channel "solid" stereo mode with 0.08% THD at the full frequency spectrum of 20Hz to 20kHz. That is more than 20dB headroom to take into account transients. So the SR-7008 has sufficient power to cleanly drive your Klipsch speakers to Reference Level.
If you want a guide on speaker power requirements, try the following web app calculator, based on your room/speaker arrangement: http://myhometheater.homestead.com/splcalculator.html
Target is to reach 105dB peak at the MLP.