single coil per amplifier...
Quite a few people use 6 ohm coils, in fact, I have about 5 or 6 woofers sitting in my room with 6" coils. Thread starter came off as someone with a lot of money, thus, first guess is JL //content.invisioncic.com/y282845/emoticons/tongue.gif.6130eb82179565f6db8d26d6001dcd24.gifJBL uses D6 coils on their subs. //content.invisioncic.com/y282845/emoticons/wink.gif.608e3ea05f1a9f98611af0861652f8fb.gif