Well, just be careful what you do - you've got some inter-cabinet phasing issues you might wanna 'speriment with.
I'm not an expert on "your Family from L", but from the tech sheets kindly supplied by The One Giskard, here's what I gleaned:
L100
LF = (-)
MF = (-)
HF = (-)
L100A
LF = (+)
MF = (-)
HF = (+)
L100A (Late Model)
LF = (+)
MF = (-)
HF = (+)
L110
LF = (-)
MF = (+)
HF = (-)
(this is the more common JBL phasing - with LF being (-) )
L110A
LF = (-)
MF = (+)
HF = (-)
L112 - II
LF = (-)
MF = (+)
HF = (-)
L166/L166A
LF = (-)
MF = (-)
HF = (-)
What's the point - you ask? If you are pairing or grouping cabinets where like drivers are oppositely phased, you will get cancelling (rather than doubling). Say you walled the family room with the L112 and L166 - the MF's would be cancelling, providing a very different sound experience than walling with say, the L110's and L112 (they are phased alike).
Ha! If you paired the L100A's with the L110 or L112's, you wouldn't hear anything!
Perfect!