The 5LS is 78" tall, but only 7" wide (and 10" deep). The "LS" in the 5LS's model designation stands for "line source," and the forward-facing array consists of seven of Gallo's CDT tweeter and eight 4" carbon-fiber midrange drivers. Gallo claims that alternating the two drivers eliminates the phase and dispersion problems encountered by other line source designs.
Twelve rear-firing 4" subwoofer drivers move as much air as a 15" driver, Gallo claims, but "with speed and transparency that no larger driver can equal."
The 5LS has no crossover other than a first-order low-pass filter and can be bi- or tri-amped, although "any capably designed amplifier can drive them."
Gallo played Rutter's audiophile evergreen Requiem Mass and it was as impressive a performance as I've heard under show conditions. The image height and depth were impeccable and, yes, those 4" woofers do move an impressive amount of air. This is a speaker I could spend time with.
