I own (2)K8, (1)K10, (1)KW181.
When I'm hired for Sound, I use the '8s and '181 for mains, and the '10 for stage monitor.
When I'm playing Bass to a house system, I use a crossover in the GK700rbII's loop, with freqs below 700Hz back to the the amp return, then to either an SVT215E or (JBL)JRX125, and 700-3800Hz going to a K8 (3-way crossover, with the >3800Hz highs going to 'nothing').
Alternatively, I've tried using the KW181+K10 as a bass rig by itself, with a Sansamp DI as the Pre (usually a KeelyC4 to AquilarAGRO to Univibe to EBSMulticomp to Sansamp). THIS is relatively astounding sounding. The lowest register is very deep and full.
BUT: when I do that, I miss the burpy, barking tone I can acheive in this below-700Hz region with the JBL or Ampeg, especially because of the BOOST control on the GK (remember now, that the freques ABOVE 700Hz are NOT growled-up with the boost distortion). I must say that although that cheap JRX is missing the low-register that the 215E or '181 have, it DOES have a very pleasing boost-bark (don't think of using the JRX125 for PA, though: they sound terrible on mixed material and vocals - but for Bass; I'm tellin' ya: even when used full-range!).
Anyway: My only complaints about the Ks are thus:
They have a power cable lock, BUT NOT AN XLR INPUT LOCK.
- The cable DOES fall out if the speaker's mounted on the woofer. Use tape on the input connection!
There is a peaky harshness in the lower-treble.
- It causes sibilance problems and the like, which DON'T show up in phones or other systems.
Overall, though, they are definately killer, KILLER speakers! I always get compliments - very often "that's the best that band's ever sounded" - and even the occasional "that's the best sound I've ever heard"!
-Joe