I'm using the Denon to power my front heights while the XPA-5 drives my fronts and surrounds.
The thing is, prior to that, there was an official statement by Emotiva saying there would be no more sales at all. I think there have been 2 sales since then. It looks to be a work-in-progress on the "no more sales" strategy. The loyalty program idea would exclude new-to-emotiva customers, and they wouldn't want to exclude that group of people and only reward second or third time repeat customers. It'll be interesting to see what they come up with.
So true. I have had all sorts of 'exotic' amps in the days when I was fooled by all the 'audiophile' nonsense that had filled my head via various magazines, sighted tests, advertiser-dependent 'reviews' etc etc. Some of those amps cost near as much as my entire system these days - money that was entirely and totally wasted. Then I started to wonder why, with all this expensive gear, I never seemed to be satisfied and was always looking for something new, for the next 'upgrade' which would lead me to the sonic nirvana which had so far eluded me. I decided to study the science behind sound reproduction. And then, of course, I began to understand that the things I had been changing, so expensively, were not the things that actually made much of a difference to the sound - and the things I had not even been looking at were precisely those things that did affect the sound so much. Today, I have 4 Emotiva amps and unless they break beyond repair they will never be 'upgraded'. And the sound I get today is the best, by some margin, than it has ever been. Why? Speakers and room.
I am planning to get the Marantz 7008 to run a 7.2 system (B&W speakers all around; CM9 series).
Is there a need for say an Emotiva XPA-5 to provide amplification to the fronts to get better quality output OR you think the 7008 will be able to handle it all on its own.
How much power you need depends on the sensitivity of your speakers, the seating distance from them and the loudness levels you want to play the system at. The CM9s are 89dB sensitivity and have a power handling of 200 watts according to B&W's site.
If you plug this data into one of the online SPL calculators you will see this:
This shows that at a seating distance of about 10 feet, in order to achieve THX Reference Level playback you will need 385 watts. But as the CM9s can only handle 200 watts, this could be an issue for you. As the 105db is 'peak' only, and as the recommended amp power for the CM9 is 200 watts, then chances are you will be OK for brief peaks. However, despite the CM9 being an excellent speaker, its limited power handling combined with its average-only sensitivity makes it a less than ideal choice for HT use.
Coming back to your question, you only need additional amp power if your current amp is being driven into clipping at the SPLs you require. Only you know how loud you want to listen at so no hard and fast answer can be given. If you want to listen at more moderate levels than Reference, and will never require the ability to play at Reference, then I would guess that the 7008's amps will be more than sufficient.
Also bear in mind that the 7008 quotes 125 watts into 8 ohms. You needs to double amp power to get a 3dB increase in SPL, so the Emotiva amp will only give you approximately another 2dB or so. Is this worth the money to you? To help decide, play something at a level you like, and then advance the MV control by 2dB. Does that additional loudness sound like it's worth the price of an XPA-5?
And before someone says "ah yes but Emo specifies its power with all channels driven and the Marantz doesn't" - yes this is true, but these specs are for reproducing sine waves. On real life content this distinction is of less importance: the chances of your system demanding peak power into all speakers all at the same time is probably zero.
Yep. I like to tell people I listen at 'loud' levels, and I do, but typically I listen at -5dB. Here’s what that means:
Even for me, a typical, decent AVR would be more than enough. Even factoring in 3dB of headroom, I'd still only need 180 watts.
Yes the calculators are only a guide I agree. There are a lot on the net and they all give different results. This one for example:
They all have different parameters etc.I usually use the Crown one because it is simple and it serves to illustrate a point. But yes, room gain is important. And of course, usually one has more than one speaker playing too. I don't think anything I said to the OP is negated by the calculator result.