Originally Posted by dmcdayton
And of course, in real world, you'll almost never have every channel driven to max at same time ......A) Have neighbors B) Have spouses C)Value their hearing. If you're single, live in the woods and/or are partially deaf...then maybe there's room for improvement
Also consider that the S/N ratio is very good for these Marantz units, better than the Denon/NAD units I reviewed. Frankly to a certain extent, I valued that even more than all channels driven test all else being equal.
From my research, I'd have to run a dedicated 20-30 amp circuit before I could even begin to think of more powerful dedicated amplifier. If you go much above 150wpc, isn't that a requirement just from a sheer power throughput POV?
Good post! Well written! The 8002 (and surely the 7002 too) is plenty powerful for its rating. Just playing two channel movie audio (we have no surrounds, no center, no sub) at -20db is way too loud in our 20x30 A/V room. We use at most -23 db for older movie with soft recording.
It is so true that not all channels are driven all at once, especially for movie. For music, that should also be true. I cannot think of a situation where a good sounding recording will have full range blasting from all seven channels. Even if that can be done, how does one hear anything?
My view is that power is not about being loud, it is about being able to control difficult speaker loads. More specifically, the ability to render correct timing and wide dynamics. Music is complex sound information that changes with time. Composers use silence, soft passages as well as mass crescendo to convey intended emotional impact. That means the speakers must be able to reproduce soft passages, silence and full orchestral roar. To do that well and assuming a loudspeaker is capable of doing it, it is then up to the amplifier to rapidly remove power for silence, rapidly provide power for soft passages and rapidly provide more power for loud passages. The ability to do all that, in keeping with the tempo of the music, requires power and distinguishes so-so amplifier from good ones. The high current capability of many hi-end amplifiers do it for these reasons.
The original post was so good, I just have to chime in
. We own a 200W tube amp and it pulls 650W on idle, 950W on normal use and 1200W maximum. It requires a dedicated 20A circuit, exactly as dmcdayton said. It can surely destroy our ear drums but that misses the point. We value its sound quality and its ability to drive difficult speaker load with authority.
The 8002 sounded very good driving a pair of 4-ohm 90% sensitivity full-range monitors. I have not tried it with seven channels of 4-ohm loads. If that ever happens, will post our experience.