I also will throw the TBI into the ring;I am looking at them for my soundlab m2's as well.
what type of subwoofer is good for ribbons
I am looking to buy a new set of speakers I am very interested in some magnepan ribbon speakers but they dont have enough bass i also heard that you need a special subwoofer for these in order for them to sound right what would make a good subwoofer for ribbon speakers