The REF1052W, however, does feature the REF1050W’s 250w nominal power handling, 1000w peak power handling, 25-Hz-400Hz frequency response, and 91dB sensitivity. The REF1052W also includes vented polepieces for greater thermal power handling, large-roll rubber surrounds that absorb distortion, and an in-board motor structure that allows the 1052w to work well in both vented and small sealed enclosures. Priced at $72.99, the Infinity REF1052W is only $3 more expensive than the REF1050W.