have a pair of Tekton Perfect Set 15s but need a lighter speaker

Put some casters on the bottom of them so you can roll them around

If I may ask, why are you moving them on a regular basis?

Hire a kid in the neighborhood to help you....give him a 10 and he'll be happy.

Any speaker that is as sensitive as the Tektons won't be much smaller.  If you like their sound , get some of those heavy duty furniture slider pucks.   Put one under each corner.