KOLUMNY W PEŁNI SPRAWNE ORYGINALNE Dźwiękowo Potęga . Dla znawców . The system comes in five sections: two woofer columns, two upper-range columns, and an active crossover and servo control module. Each bass column contains six 8" polypropylene-cone woofers. Each upper-range column contains seven of Infinity's proprietary EMIM ribbon midrange drivers and four EMIT ribbon tweeters (one of them aiming out the rear, of all things!). System crossovers are at 125Hz (nominal), 750Hz, 3kHz, and 8kHz, and the number of operating drivers diminishes as the frequency goes up, to minimize vertical treble beaming due to phase interference (eg, above 8kHz only one smaller EMIT is driven).