$1000 and a tall order

[nightflier]

...Configure the speakers to run in parallel, 2 speakers per channel showing 4 ohms. Your driving each of the Dayton's with 100 watts...

Toe,

This is new to me, can you explain how to drive two speakers per channel? I take it that I would be connecting both speaker wires to a single speaker post? Isn't that bad for the amp? Also, if the amp can withstand the load, will this be risky to the preamp/receiver, or is the latter sufficiently isolated from this?

Also, I measured out the space that we have to place the speakers and it looks like we really only have about 15 inches between the ceiling/pipes and where the mirrored walls of the exercise room start. While I suppose I could hang the bottom of the speaker over the mirror, this does not leave me much room. Of course, I could mount the speakers sideways although I think that would affect the dispersion of the horns. Given these restrictions, I'm giving some thought to go with standard home audio speakers after all since the pro audio speakers are typically much larger.