Fulcrum Acoustic FL283T

The Fulcrum Acoustic FL283T is a subcardioid line array module intended for portable or permanent installation applications in a wide range of venues. It includes dual 8 inch horn-loaded woofers and three 1.4 inch

compression drivers in a compact enclosure. The enclosure is shaped

to accommodate up to 20 degrees of splay between adjacent

enclosures, allowing for more sharply curved arrays than comparable

line arrays. Each FL283T module is configured for full-range passive

operation at 16 ohms, allowing up to eight units to be driven from

a single power amplifier channel. Up to twelve modules may be

suspended with a 10:1 design factor.

The FL283T incorporates Fulcrum’s patented* Passive Cardioid

Technology™ to overcome one of the major challenges of most

line arrays: excessive rear LF radiation. Unlike active cardioid

loudspeakers, Fulcrum’s passive cardioid technology does not require

an additional amplifier channel or additional enclosure volume to

achieve its impressive low frequency directional control.

The subcardioid behavior is produced by a meticulously conceived

acoustical circuit which balances the horn loading of the low

frequency drivers, 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 as a curved line array.

Fulcrum Acoustic’s TQ™ processing is an integral part of the FL283T

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. Note that FL Series loudspeakers must use

Level 1 processing. Please see fulcrum-acoustic.com/dsp.html for

details.