P.A. cabs in series.

[goingdownslow]

I have just acquired a pair of 8Ω Carlsbro PA cabs (15" + horn) to use at a jam night*, the problem is they are only 150W and my power amp (Behringer EP2500 "says" 750W @4Ω. I am linking the two cabs in parallel from one channel and obviously I am worried about overpowering them, listening for any harsh noise or distortion when setting the output level.
I was thinking I could link these two cabs together in series giving me 16Ω and therefore get less power from that channel but then wondered whether that would still be ok with the horn and any crossover/filter they may have.



*This is not a freebie gig, the house band are paid.

Edited August 19, 2016 by goingdownslow