Originally Posted by Zen Traveler
In your room that AVR-4311ci will run your Home Theater to Reference Level and you don't need or would benefit from an external amp. The problem with RF-7s is they need a power supply that can cover it impedance dips at loud volume and your AVR can do it.
Fwiw, if you follow my posts in the AVR 4311ci thread you will see others concur..If you got to the Audio Theory and setup Forum and look at the thread "Quality Power" where I started discussion you will see that the AVR-4311ci will provide everything you need to drive your Klipsch RF-7II/RC-64 efficiently and if anyone wants to debate this issue I suggest they go there...Here it's been discussed ad nauseam and a simple search function will get you pages of anecdotes, but the only one I've seen that made any sense was from Bill Fitzmaurice who designs speakers and folks didn't seem to understand what he was saying.
I did not use a Denon AVR on my RF-7 so my guess from this post is my 130X7( does NOT make) RX-V1900 HD 7.1 Yamaha does NOT have the best power supply then. I Can post with what happened with a 250WPC X2 amp hooked up to a Yamaha RX-A3000 AVR.
HUGE difference in the RF-7 at reference levels(95Db steady and 105Db peaks for special effects) on a Bluray and .................stereo music was a HUGE difference. . the BASS woke up. I have read that a Denon 4311ci was a great AVR, never owned one.............yet.
My Onkyo TX-SR 805 HD AVR was rated 140X7 it played the RF-7 before it fried HDMI parts (again) and it too did not drive the RF-7 like a 250 WPC stereo amp has done them now. I hope for Tryindor use the Denon has a more powerful power supply and he is Happy without a external amp for them and RC-64. he has a great front end for his HT system now.
This is why I sold the RF-7 and stayed with the Cornwalls as fronts and swapped out for a C7 center as they ALL play AWESOME with my Yamaha AVR. Super small room helped too or a XPA-5 200X5 amp was next and use my AVR as pre/pro.
I may do this anyway later on. Sometimes(when wife is not home) having the volume at +10 on Bluray movies worries me as +20 is max.And the AVR DOES get a lot warmer but I have a rear fan now. I bet I am only sending 65 to 70 wpc to all 5 speakers then.
I have had the Yamaha AVR shut down on the movie Avatar on Bluray DTS Mastered at +10 volume, when they destroyed the tree of life special effect. WTF
freaked me out and read it was a protection mode from it being pushed too far. NOT enough head room. This was at stupid loud 110 DB special effect on the Bluray movie. First time in 4 years the yamaha has done this. I went back to the same part of the movie and turned it down to +5 and it did NOT turn of the AVR, so I found the 1900 limits for loud special effects. I can play CD's and No way I could turn it up to +10 my ears would bleed. HDMI eats power on HD audio...so does my turn table on analog. , I use a lot more of the amps. I am building a separate system just for analog and get away from the AVR for my R2R,TT etc.