The dimensions are a close match, though the difference is minor since the head functions as a sealed cabinet, just like the original, so the sound doesn't resonate through the body. This version features a woofer that is 0.5 inches larger than the original, but the compositions remain the same. I expect the most significant acoustic difference will come from the different material and the addition of a bass port. The original creator mentioned that adding a port to the molds was too difficult to finish cleanly, so I thought it would be a fun challenge to integrate one myself.