Quote:
Originally Posted by
OMARBOF 
In this case, There will not be an imbalance between the speakers's sound, The Floorstanding and central speakers drived by Emotiva XPA-3 and the rest drived by Marantz 6005 ?
When watching a movie, 70% of the sound is vocals coming out of your center channel, 20-25% is music from the left and right fronts leaving less than 5-10% for "ambient sounds and effects" for your surround speakers. Also, surround speakers tend to be be smaller for exactly that reason. Also, don't forget that your subwoofer is taking a huge load off small speakers by playing the more demanding bass notes.
In 2 channel music listening, 100% of the sound is to your left and right fronts.
All this to say, your front 3 speakers tend to need the most power which is why many use separate amps to drive those channels. You will not hear a sonic difference because you are using seperate amps for the fronts and the AVR's amps for the surrounds*.
* - if you are listening to movies or music in 7channel mode (i.e. all speakers getting the same signal strength), you may hear the difference in power but that's going to be more a function of your speaker size than the amount of power they are receiving.