So I guess im confused as to why the bi-amping won't work. I understand bi amping but there are two channels dedicated to zone 2/bi amp on the receiver. am I, at 2 channel, not going to get adequate power from the 2nd output? Keep in mind I'm only running 2 channel for awhile.
I did passive bi-amping, as this is called, for years, and the results varied depending on the speakers. My previous speakers were the very complex, multi-driver original Legacy Focus (3x12" woofer, 2x7" midrange, 1xdome tweeter, 1xleaf tweeter per side) and I definitely heard an improvement from vertically passively bi-amping each speaker. The mid-highs were cleaner with their own amp. I couldn't discern the difference between with/without bi-amping by just switching from one config to the other, but after an hour or so of listening I would be happier with the bi-amp option. Less listening fatigue. So I paid a lot for it, because it was worth a lot to me.
With the Revel Salon 2 speakers and the same amps I heard no difference at all with single or bi-amping. I bi-amp now with the Salon 2s only because I feed the woofers a high-pass filtered signal from my sub, and for the purest possible signal I feed the mid-high section amp a full-range signal direct from the pre-amp. Otherwise I'd be using one stereo amp.
The original Focus may have been a special case, because the in the lowest octaves that speaker is a low 2.x ohm load and the phase angle is capacitive in part of that range. Legacy used to sell super-beefy amps at the time (built by Coda), even though the speakers were rated for 96db/2.83v/1 meter. Maybe there was a reason.
So in the case with the Yamaha it can't hurt to try passive bi-amping and see what happens. There's an excellent chance you'll hear no improvement, if you're honest with yourself. Or you might hear an improvement, but since the price is just extra set of cables, who cares? In this case indulging your delusion, even if that ends up being what it is, is cheap. If you end up going with the Studio 100 you may crank the volume up a lot and that extra power may just make the sound cleaner. Or not. ;-) Judge for yourself. In the end these forums are nothing but conversation and free advice.