a friend of mine just got a Hartke vx215 (4ohm). so we put that under my vx410(8ohm) and powered it up with my HA4000, man, that sounded (and felt) sweet . i just wanted to make sure of one thing... will putting these two cabs together of different ohms mess up my amp head? the head is rated at 400w at 4ohm, 300w at 8ohms. and when both cabs are connected, their in parallel. i just don't want to eff anything up with the ohm issue you know... thanks!