This is a pair of Peavey 15" TLS-SUB's that I added power modules to. The modules are a Sanway single channel power amp. If I remember correctly, it puts out 1800 watts. They are set to run from 90hz to 40hz. The drivers are the original Peaveys, and are rated at 600 watts rms, and 1200 watts peak. They have removable casters as seen in the pic. There has also been a piezo tweeter installed in them at some point, but they are not connected, and are barely visable. This is a great set of powered subs.