Sounds to me like either the panels aren't getting charged up, or the signal from the amp is not reaching them, or both. My first guess would be that one or more of the wires going from the panels into the electronics is not pushed into its socket all the way. Suggest you double-check those connections if you haven't already.
Help problem with Soundlab Dynastats
So I just helped my non-audiophile dad hook up his Soundlab Dynastats which were previously connected to a Yamaha DSP A1 receiver to his new improved setup consisting of a Bryston Sp1.7 and 9B ST REG 5 channel amp. The speakers had to come up from the basement to the main floor, a move which I wasn't involved with. When I hooked the Dynastats up to the Bryston Electronics, they sounded totally muffled, both speakers. Terribly wrong. I hooked a couple of pairs of cheaper speakers to the Brystons and they sounded fine. Adjusted the bias and tone controls on the Dynastats - no improvement. Any ideas? Apparently they were sounding absolutely great with the Yamaha just a few weeks ago.....