Wayne Parham Messages: 18791 Registered: January 2001
Illuminati (33rd Degree)
Using the data you provided, Vas=57L, Qts=0.33 and Fts=46Hz, you can enter these values into PiAlign as Vad=2ft3, Qd=3 and Frd=46Hz. PiAlign recommends a rather small box of 0.667ft3 (20L), tuned to 52Hz with a port that's 4.4" long and with area of 4.3in2. It further recommends that this be accomplished with a cylindrical port of 2.35" diameter or a rectangular port of 1.56" x 2.77". The system would then have -3dB around 70Hz, I expect, and would work well as a midwoofer system, perhaps as surround speakers or as mains designed to be used with subs.
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