a friend of mine has his 1606 running an .5 daily. no problems at all. why dont yo port both and run them at half ohm? i have mines 2 L7's in a 5.35 cu ft. box tuned to 34 hz. and showed my *** down in Florida this weekend! it very loud and can catch all low notes and move air like hell. Try it, you wont b disappointed. . .