The subwoofer enclosure was assembled using a 1/4 bit to align the edges. Haven't used it extensively, maybe about 15ft edge wash if I had to guess and the bait broke. Finished with a large bit but I didn't expect the bit to break so quickly. Went back and ordered a different brand which was basically the same clone with a different name. They work, but are unreliable for long-term use. They're cheap so I can't complain.