Fulcrum Acoustic has launched its Cardioid Subwoofers, designed with patent-pending Passive Cardioid Technology to overcome excessive rear low frequency radiation.

Fulcrum’s Passive Cardioid Technology (introduced in the FL283 and FLS115 line array products) is the basis for a line of Cardioid Subwoofers that includes that CS118 18-inch and CS121 21-inch models. These are tailored to eliminate excessive rear LF radiation without any of the additional requirements of active cardioid systems, using a single passive cardioid speaker performing as an active cardioid array. By achieving LF directional control without additional amplifiers, drivers or signal processors in less than half the space required for active cardioid array systems, Cardioid Subwoofers allow the use of cardioid arrays in applications that might not otherwise have the budget or space to accommodate them.

This subcardioid behaviour is produced by a acoustical circuit, which balances the position of the low-frequency driver, the enclosure depth and volume, and rear-mounted ports that 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 an array.

‘Passive Cardioid Technology evolved from listening to our customers’ needs and directing our efforts toward satisfying those needs,’ says Fulcrum co-founder and Lead Product Designer, David Gunness. ‘We see this technology as potentially game changing for the pro audio industry, and as something we will continue to develop into new applications going forward.’

More: www.fulcrum-acoustic.com

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