My current living room setup is a 3.1 channem configuration consisting of three Defintive Technologies Mythos Nine wall speakers, an SVS SB1000 12" sub, and a Marantz SR5013 receiver. The speakers have an RMS power handling of 250W, and my receiver has an RMS rating of 100W per channel. I find myself turning up the receiver to -10dB while playing music and often close to 0dB. Even then, it left me wanting more volume. Therefore, I decided to purchase a Marantz MM7025 amp, which delivers 140W per channel. I was disappointed to find that there was no perceivable difference in loudness between powering the speakers with the receiver and powering them with the amp (understandable since only about a 1.5dB increase). So I figured I really needed to step things up and purchased an Emotiva XPA-3, which is rated at 275W per channel. However, again to my disappointment, the speakers still aren't much louder. Certainly not enough to warrant the $1250 price tag. I still have both amps, but am considering returning both because I can basically get the same volume out of my receiver. I'm wondering if the speakers just aren't sensitive enough and/or the drivers just can't physically give me the deep rich sound I want (each has dual 4.5" drivers with dual 4x8 passive radiators). What do you guys think? Have I reached the limits of my speakers? Should I return the amps and stick with my receiver only, or is it beneficial to have more wattage even though the perceived loudness isn't much different?
After connecting the XPA-3, I started looking through the SR5013 settings a little more closely and found I could adjus the speaker levels by up to 12dB, which made the speakers quite a bit louder (they were all set to 0dB). Does this mean I wasn't using all the available power or is it one of those things where it appears you are getting more power, but in reality it just decreases the main volume by the same amount? With all channels set to +12dB, it is pretty loud now, so I'm not sure I even need an amp. I believe when Marantz specs 100W, they really mean 100W off clean power, so turning the volume up to -10dB is probably fine. I want to say the speakers sound a little better quality with the Emotiva, but it could be a placebo effect. Sorry for the long post.