I've had these for a while, and mentioned them before, but just got the spec sheet from a very helpful guy at DCM. They are naked right now. I will redo the grills shortly, and refinish the solid oak top and bottom caps. They image beautifully, which was always the characteristic of DCM speakers (TimeWindows & TimeFrames) that set them apart. I'm sure that the coaxially mounted tweeter is part of the reason. I'm quite sure that the drivers are made by Audax (because the TimeFrames' are).I also found (from another source) what looks like a dedicated passive subwoofer, called DoubleTime. Ithas very weak output at the moment, but does work. I think I have to replace all the crossover components, or at least the resistors. I look forward to hearing the whole system together, and the guy at DCM is working on finding specs for it. There is great potential for the whole system, but the TimePieces are something special all by themselves.