I once got the contract to design and install the sound system for an IMax theater in the Minneapolis area. I used a quatity of 7 JBL 4435 studio monitors and 6 custom JBL loaded 18" subwoofers. The sound was QUITE good. The 44 series was the replacement for the 43 series. My front speakers in my HT system are JBL 4430's.
Which IMAX is that? Valleyfair, Science Museum (this one is friggin insane), Minnesota Zoo?