Originally Posted by chazz1234
This is all great stuff guys.............Imma take it all in and think about it over the weekend.......
Maybe consider doing what I did.
I was looking to jump from a 7.x to a 9.x/11.x surround sound setup. My Denon receiver was rated by HT Labs at 147 watts / channel with 7 channels driven. I was going to need an external amp anyway, so I started looking at 2-channel amps, just as you are. I attended the last EmoFest to look at their new stuff and purchase an amp. I was looking at the amount of space I was willing to allocate for an external amp and decided that I wanted to only get one chasis. I took a look at offerings from ATI, D-Sonic, Outlaw, and Emotiva. Emotiva won out simply for their basic design, 5 year warranty, and cost to ship if there is a problem. I live an hour away from Emotiva, so driving it to Emotiva HQ is cheaper and safer than shipping it. I looked at their XPA-2, XPA-3, and XPA-5. And decided to look at a 5-channel amp instead. It would allow me to put 5 speakers on the same amp AND greatly reduce the stress on the receiver. That ALL want out the window when I saw the XPR-5. LOL All of my main speakers ( core 5.x setup ) can take at least 450 watts RMS and the satellites can take 225 and 300 watts RMS. Getting the XPR-5 instead of the XPA-2,3, or 5 was perfect for me since I got more power in the same-sized footprint.
The XPA amps have a gain of 32 dB and some folks are reporting " hiss " from their speakers when the volume is muted or very low. The XPR amps have the more standard 29dB of gain. My system is a lot quieter at no or low volume with the exception of the subs, they have hiss at no volume until they automatically shut down.
I would get the XPR-5. It would be a compromise between the 600x2 being too much and 300x2 with a 32dB of gain. Actually, it is more like 260 watts x 2 for the XPA-2 if you want reasonable a THD. The cost difference between the XPR-2 and XPR-5 is minimal. The size of the box would be the same but you would get 5 channels at 400 watts and offload a great deal of power from your receiver. That would leave more for the rest of the speakers connected to the Pioneer PLUS give you a nice path to a 9.x or 11.x setup without needing further amplification. The XPA amps all come with a 1200 VA transformer. The XPR-1 and XPR-2 come with a 2500 VA transformer and the XPR-5 comes with a 3300 VA transformer. Also. The XPR series run cooler than the XPA series even though they output double the power. I only have 1.5" of clearance above the amp and the XPR-5 really doesn't even get warm except for the top rear. You could fry eggs on the Dish satellite receiver and the Denon.
I would say that a DEDICATED 20 amp receptacle is a requirement for the XPR series. I wired up four 20 amp receptacles just for my A/V gear. Two dedicated for amps ( only using one ), one for subwoofers, and one for the receiver, TV, and players since I also have A Monster Power HTS-5100 MkII. I wired four 20 amp because I was originally looking at a D-Sonic M2-3500, which requires two dedicated 20 amp circuits. I just couldn't justify $4500 for 3500 watts of power.Edited by jevans64 - 12/20/12 at 5:40pm