Wayne Parham Messages: 18786 Registered: January 2001
Illuminati (33rd Degree)
Both are good in that size room. Neither is really "better", at least not when fully upgraded. The three π loudspeaker uses a really nice Acoustic Elegance midwoofer (TD12S) and the four π model uses one of JBL's best midwoofers, the 2226H. They're very nice speakers, more similar than different. The four π is 3dB louder though.