Impedance - Ohms - Dynamic Power - An explanation?

The 'dynamic power' is the absolute maximum the amp can give, when running 2 channels (i.e.stereo).

When running 5 speakers plus the sub, the dynamic power will be much lower.

To be honest, it doesn't really mean much in the real world - you are very, very unlikely to use the full 'dynamic power'...

Why do you want 4 front speakers?

The correct way to wire up a 5.1 system is 2 fronts, 1 centre, 2 surrounds and 1 subwoofer.

In all honesty, that setup must sound absolutely hideous and what you are suggesting will make it sound even worse!!

Given that there is no such thing as "5 channel stereo" (because stereo is only 2 channels, to be played through 2 speakers), the more speakers you add, the worse it will sound - trust me on that one...

Dynamic Power is more or less the same as peak power...when your playing music the demands from the amp are not static...your average output could be say 7 watts but for momentary instances say when a drummer cracks a snare the amp may be called on to out put 70 watts, this may last only a couple of microseconds but if your amp is not able to do it the fidelity of the music is effected...and the music will sound flat and two dimensional, a good amp will good dynamic power will sound richer and fuller with a larger sound stage and more three d, most amps have some dynamic range to them even in surround sound mode, but usually the manufactures only list dynamic range into stereo...

Dynamic power is a way of bigging up the specs. It really does not mean anything much that is useful, because if you run it flat out you will get all sorts of distortion and clipping.

The best measure of power is RMS which means "root mean square" Sounds complicated but it is not. If you imagine a sine wave where you have a line that loops above and below the zero line symmetically, then the average of that is actually zero even though if you heard it through a speaker it would be a hum.

So by squaring the output value and then taking the square root, it all turns to positive and you have RMS

In regards to the sub connection, the best way to hook it up is via the sub pre-out from your receiver to the sub via a single cable, the .1 in 5.1 is the dedicated subwoofer channel and DVD's or anything else encoded in 5.1 send sub specific signals via the sub output on the rcvr. If you don''t want to go that way, then you run the main L & R speaker cables from your rcvr to the sub and then another set of speaker cables from your sub to your main L & R front speakers - this is assuming that your sub has two sets of speaker terminals - if you run it this way make sure and set your Denon to the NO sub setting so that a full bandwidth signal is sent to through your speaker wires to the sub. Can be confusing, read the setup guide for the Denon and the sub it might explain it better than I can.