Wayne Parham Messages: 18787 Registered: January 2001
Illuminati (33rd Degree)
I'd run 2118's as mids in sealed cabinets larger than 0.3ft3. You could run them as little bass-reflex speakers in boxes from 0.1ft3 to 0.5ft3 tuned to 95Hz, I suppose. But f3 doesn't get below 100Hz. PiAlign suggests 0.2ft3. For two drivers, double the box volume but keep the Helmholtz frequency at 95Hz.