Hi Guy 13. If you're referring to the original post which opened this thread, I was being a little facetious when I posted about a neighbour knocking on my door to tell me I was playing music too loudly. I appreciate numbers and they helped me in my decision to buy Omegas (I bought a dB meter and did a lot of calculations before buying my amp and speakers), but I wanted to post some real world experience that anyone would be able to relate to.
from my testings I found out that close listening reduce the watts needed
for a good/enjoyable listening.
Now I must say that I do not have problems with my neighbors,
because I have no nearby neighbors
and my listening room is built with 12" reinforced concrete,
even my wife one floor under barely hear the music.
Here is my set up anyway:
Sitting position 4' from speakers.
4.5' between the two speakers.
6.5' behind the speakers,
because they are Open Baffle Dipole, so they need space.
My listening room is 12' wide, 13.5' long and 9' high.
If I had to do it all over again, I would go again with Omega (93dB)
with this time a 6wpc Decware amplifier and a pre-amplifier, some recording (CD) are recorded below average, so with my 2wpc, with those recording I need to push the Decware 2wpc to it's maximum, therefore, missing headroom.
For the subwoofer, that's really a matter of how do you like bass, how loud you like your bass, but for me, I could not live without sub woofers, however, with Omega floor stander and some lite music like jazz at reasonable listening 80 to 85dB subs are not a must.I bought a frequency generator and a dB meter from Amazon and did my tests, it's not the best way, but I does tell you a little more that having nothing to test.
I hope this help.
All the above comments are based on my experiences and my liking.