These are really heavy duty speakers that I made for my son when he was starting as a rock musician. He used them in a performance environment. After he had finished with them, we used them at home as frankly they sounded better than speakers sold commercially for a domestic environment, but since we have moved, they are too large for our house and they need to go. Don't know what the specs are but they were able to handle anything my son could throw at them. We painted them brown to match our domestic decor, but they were originally "performance" black! The cones and cross-overs alone are worth far more than we we are asking.