I might have already commented on this so forgive me if this is a repeat. I'm so grossly disappointed by my Double Impacts it's pitiful and I've tried everything imaginable to get them to work. My amp is a PrimaLuna EVO 300.
I'm a musician (Local 802) and made hand-made mouthpieces for some of the greatest sax players who ever lived for almost forty years, am fairly respected and let me tell you, these speakers suck and if you believe people like Steve Guttenberg who gets all kinds of perks from the audio companies then you might want to reassess your source of information because ALL those guys get something in return for their reviews. Several of these guys said that the DI's are as good as speakers costing 30K! Do you believe that?
When I called Tekton to ask for help, Eric Alexander was rude to me before I could even get a work in and told me to return them but ALAS, it costs $385.00 to return EACH speaker! So, in reality, if they cost that much to send them to me then they're really only a $2300 speaker. So I'm dumping them and have already bought a pair of Klipsch Forte 4's. If you can't audition a speaker, then don't buy it.