System typeSealed
DriverRE Audio XXX
Driver Size18 "
Number of drivers1
Internal volume4.5 ft3
External volume6.12 ft3
Dimentions (Width Height Depth)23 " 23 " 20 "
Weight130 lbs
Aprox. Price$1000 USD


Using the XXX 18 driver in the 4.5 cube sealed test enclosure handicaps it substantially and results in a humped response shape with a significant roll off towards the top end. Sensitivity is very low due to the high moving mass and low BL^2/RE of the motor. This driver wants an enclosure many times this size for a maximally flat alignment. Additionally the huge excursion levels supported require tremendous amounts of amplifier power to make use of them. Power levels that are likely not realistic to use. Distortion performance below 50Hz is pretty good considering the output levels reached but would probably improve substantially in a larger airspace. On the positive side the chance of running out of excursion with this driver in a cabinet this small is next to nothing using any sort of typical amplification scheme. This driver is much better suited to larger sealed enclosures, giant vented alignments and probably most of all IB.