Cardioid Set-Up - LD Systems ICOA LDICOASUB15A Manuel D'utilisation

CARDIOID SET-UP

The loudspeaker CARDIOID preset is complex DSP programming that enables a kidney-shaped radiation pattern (cardioid sound radiation) to be
achieved by a combination of two LD ICOA subwoofers of the same model.
In comparison to conventional subwoofer setups, it provides the following advantages:
• Reverse attenuation up to 20 dB
• More precise bass reproduction in the listening area
• Prevention of unwanted reflections from rear walls
• Reduction of diffuse sound in rooms
• Elimination of annoying bass frequencies on stage
• Differentiated sound pattern for stage sound reinforcement (monitoring)
• Reduction of feedback occurring with stage microphones
As illustrated, place two subwoofers beside each other, with the subwoofer with the cardioid preset facing backwards (see figure below). Select the
100 Hz preset for the front-facing main subwoofer and ensure that the delay time, polarity, and volume settings for both subwoofers are the
same.
WHAT DOES LD SYSTEMS DYNX® DSP MEAN?
DSP is an acronym that stands for digital signal processing. DynX® includes the Limiter, EQ, Compressor, and Low-Pass
Filter. Digital signal processing ensures optimal audio bass reproduction with maximum clarity while protecting the
subwoofer from overloading.
WHAT EXACTLY DOES DYNX® DSP DO?
The Limiter function protects the speaker and prevents overload-induced distortion. The subwoofer allows the system
to be operated at an overall higher sound pressure since extreme signal peaks are automatically limited so that the
master volume does not have to be reduced. The multi-band EQ handles the entire bass range and optimizes the
subwoofer's overall sound.
PRESET 100 Hz
PRESET CARDIOID
Forward-facing
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