so i got my 800RB and my 1x15 RBH in. thanks to the people on this board i got it set up without blowing anything up. the amp arrived earlier. while i was waiting for the cab i hooked the 800RB up to my old 1x15 peavey combo during practice. IT WAS LOUD. during practice i had the volume and gain on 2. when i got the GK cab in and set them up (oh sounded so sweet) i was practicing with the volumes up half way. why was the peavey and GK head SOOOO much louder than the GK cab and GK head?