Hi.
The only piece of HK gear I own is a traditional 115 passive sub and while the speaker is adequate (Eminence), the box is made out of MDF, something I really hate.
The box (mine does anyway) will need ocasionally "tightening up" with glue and screws because the workmanship is a bit shoddy.
Not a bad cab by itself, but pretty heavy for what it is (obviously, being made out of MDF).
IIRC, I once used their medium size PA and the sound was all right, didn't have to move the rig though

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The idea and the footprint of these "stick on a box" type speker systems is nice, but I'd choose more traditional line array modules if I had to renew my smaller PA rig. Don't have the necessary dough to do that though

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Regards
Sam