Originally Posted by partcrash
Think of it this way- do you want a 4 speed or a 5 speed transmission in your car? Divide and conquer.
That is not a good analogy. The best type of transmission depends on the engine, and for what purpose you use your car.
If I had a large engine I would want a four speed because the gears are more beefy and the engine can keep use its superior torque to keep the vehicle in the power band without having to shift all the time.
OTOH if I had an anemic engine with little horsepower I would want more gears because I would need to keep shifting to keep the small engine within its weak power band. A small engine will not explode a smaller 5-speed tranny with horsepower.
Speakers are not transmissions, and more is not necessarily better.
I prefer the sound of a two-way speaker with good drivers. In particular I like the HF driver to be able to dig low. Cheap drivers cannot do that.
In the case of the two speakers mentioned they both use high quality components. I don't have the Fusion 15 but I have its cousin, the Cheap Thrills. With a large mid-bass driver I think it beams a little more, which means it has a very live sound but may not sound as good off-axis. My CT has phenomenal mid-range for male and female vocals. You might even think of it as a three way because it was designed from the ground-up to be used with a sub.
I've never heard the 1099 3-way but I imagine it has strengths in areas the F-15 does not, maybe it is better as a full range speaker and does not need a sub, I don't know the answer. That question is best answered by someone who has heard them both.
In any case, I would NOT assume a 3-way speaker is automatically better than a 2-way simply because more drivers.