Fulcrum Acoustic CS215L

The Fulcrum Acoustic CS215L is a low profile, dual 15 inch subcardioid subwoofer module intended for permanent installation in a wide range of venues. Its premium, high power transducers are physically engaging, yet are musically articulate enough to reproduce the subtlety and harmonic

nuance of an upright bass or the low strings of a piano. Twelve M10

mounting points facilitate either horizontal or vertical overhead

suspension. Four vibration isolation feet prevent spurious vibrations

and “walking” in horizontal ground stack applications.

The CS215L incorporates Fulcrum’s patented Passive Cardioid

Technology™ to overcome one of the major challenges of many

loudspeakers: excessive rear LF radiation. Unlike active cardioid

loudspeakers, Fulcrum’s passive cardioid technology does not require

an additional amplifier channel or additional transducer to achieve

its impressive low frequency directional control: >7 dB of rear

rejection over the subwoofer’s operating range.

The subcardioid behavior is produced by a meticulously conceived

acoustical circuit which balances the position of the low frequency

driver, the enclosure depth and volume, and specially constructed

rear-mounted ports which include a calibrated resistive element.

By opting for a subcardioid pattern as opposed to a pure, hyper

or super cardioid pattern, the rear rejection increases when the

modules are deployed in a subwoofer array.

Fulcrum Acoustic’s TQ™ processing is an integral part of the CS215L

design. Sound, innovative acoustical design combined with state of

the art digital processing leads to exceptional clarity and precise

transient response, even at very high sound pressure levels. The

required digital signal processing can be provided by one of many

supported platforms.