To pass bean counters small cab, easy to build and ship,small drivers again saves cost, for WAF small and a nice finish. So many audiophiles buy the costly wee loudspeakers hoping to get performance but also tying to get loudspeaker past she or he who must be obeyed.
Ain't that the truth!! Frankly, I figure WAF is not just for Wives - lets be honest, for the majority of audiophiles, it is as much an aesthetic contest as it is about the sound. $300 dollar worth of drivers in $5000 of beautifully veneered coffins is where it is at. (Who cares if a single high quality woofer costs close to a $1000 when one can get magnolia veneer instead)