I wish I had found this page before at ASR. Through most of the musical bass range these speakers remain under 3 Ohms. Remarkably low impedance for a broad range, while the speakers I use only touch 4 Ohms. Great that a bigger amplifier solves the problem but man, I’d switch speakers first. I think while the speakers can sound good with a big amp, it would have to be a remarkable speaker to make me accept these kind of demands.