CS Series

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The CS Series combines high-output performance with Fulcrum’s Passive Cardioid Technology™ to reduce rear LF energy, without requiring additional drivers, amplifiers, or DSP. TQ™ Processing optimizes phase response and voicing, allowing the CS Series to deliver focused clarity and control from a compact footprint, making it ideal for challenging acoustic environments.

Passive Cardioid Technology

TQ™ Processing

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Cardioid Subwoofers

CS118 18" Subcardioid Subwoofer

The CS118 is a subcardioid subwoofer module intended for permanent installation in a wide range of venues. It includes a single, high power 18 inch direct-radiating woofer in a compact enclosure. A variety of mounting points facilitate supsension via shoulder eye bolts or a yoke bracket. The CS118 incorporates Fulcrum’s patent-pending 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: 10 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 CS118 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.

Specifications
CS121 21" Subcardioid Subwoofer

The CS121 is a subcardioid subwoofer module intended for permanent installation in a wide range of venues. It includes a single, high power 21 inch direct-radiating woofer in a compact enclosure. A variety of mounting points facilitate suspension via shoulder eye bolts or a yoke bracket. The CS121 incorporates Fulcrum’s patent-pending 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: 10 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 CS121 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.

Specifications
CS212L Dual 12" Subcardioid Subwoofer

The CS212L is a low profile, dual 12 inch subcardioid subwoofer module intended for permanent installation in a wide range of venues. Its premium, high power transducers provide impressive low frequency impact and solid musicality. 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 CS212L incorporates Fulcrum’s patented Passive Cardioid Technology™ to address one of the major challenges of many direct-radiating subwoofers: 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: 8 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 CS212L 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.

Specifications
CS218L Dual 18" Subcardioid Subwoofer

The CS218L is a low profile, dual 18 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 CS218L incorporates Fulcrum’s patented Passive Cardioid Technology™ to address one of the major challenges of many direct-radiating subwoofers: 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: >10 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 CS218L 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.

Specifications
CSP118 18" Subcardioid Subwoofer

The CSP118 is a portable, subcardioid subwoofer module intended for a wide range of venues. It includes a single, high power 18 inch direct-radiating woofer in a compact enclosure. An M20-threaded connector plate is centered on the CSP118’s top panel for use with the optional, height-adjustable SP1 Speaker Pole. This pole’s M20 threaded bolt screws securely into the connector plate and is used to mount loudspeakers equipped with a 35 mm / 1.38 inch pole socket directly above the CSP118. Four vibration isolation feet prevent spurious vibrations and “walking”. When stacking enclosures, the vibration isolators nest in recesses in the enclosure below. The CSP118 incorporates Fulcrum’s patent-pending 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: 10 dB of rear rejection over the subwoofer’s operating range. Fulcrum Acoustic’s TQ™ processing is an integral part of the CSP118 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.

Specifications
CSP121 21" Subcardioid Subwoofer

The CSP121 is a portable, subcardioid subwoofer module intended for a wide range of venues. It includes a single, high power 21 inch direct-radiating woofer in a compact enclosure. An M20-threaded connector plate is centered on the CSP121’s top panel for use with the optional, height-adjustable SP1 Speaker Pole. This pole’s M20 threaded bolt screws securely into the connector plate and is used to mount loudspeakers equipped with a 35 mm / 1.38 inch pole socket directly above the CSP121. Four vibration isolation feet prevent spurious vibrations and “walking”. When stacking enclosures, the vibration isolators nest in recesses in the enclosure below. The CSP121 incorporates Fulcrum’s patent-pending 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: 10 dB of rear rejection over the subwoofer’s operating range. Fulcrum Acoustic’s TQ™ processing is an integral part of the CSP121 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.

Specifications