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  • Variable Vertical Beam Steerable Column Speaker
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Variable Vertical Beam Steerable Column Speaker

    GB4224PB

    Overview


    The Gradient Beam DSP Column Speaker is engineered with advanced research on spatial acoustics, optimizing sound radiation in both horizontal and vertical planes. Physical directional waveguides suppress unwanted side lobes, ensuring precise sound directivity.

    Horizontally, two directional beams cover near-field and far-field areas, with adjustable sound pressure levels. DSP control allows fine-tuning of near-field coverage for targeted horizontal projection, delivering clear sound exactly where needed.

    Vertically, asymmetric radiation is achieved using DSP-driven gradual delay on the two beams combined with a specially designed acoustic structure. This creates a downward-focused radiation pattern, reduces ceiling reflections, and ensures uniform sound pressure and high clarity, even in reverberant environments.

    Ideal for lecture halls, command centers, airports, stations, lobbies, exhibition halls, museums, and other large or medium-sized venues.



    Product features


    • Directional Waveguides – Suppress side lobes and achieve accurate directivity.

    • Horizontal Gradient Beams – Two beams:

    Near field: 160° wide coverage

    Far field: 100° narrower coverage for longer distance
    Adjustable sound pressure allows precise targeting.

    • DSP-Controlled Near-Field Adjustment – Focused coverage reduces reflections and enhances speech clarity.

    • Asymmetric Vertical Radiation – Downward beam pattern improves uniformity, reduces ceiling reflections, and delivers clear direct sound without tilting the speaker.

    • AOIP Network Input – Supports mainstream network audio protocols.

    • Flexible Inputs – Analog, digital, or mixed signals.

    • Network Management – Full device control via direct switch connection.

    • Advanced DSP Functions – Beam control, 7-band EQ, high/low-pass filtering, input level, mute, presets, and system settings.

    • Built-in Digital Amplifier – Multi-channel Class D, high efficiency, protection for overheat and short circuits.

    • High-Quality Drivers – 2 × 3.5" for far field, 4 × 2" for near field; scientifically coupled for clear and transparent sound.

    • Slim Wooden Enclosure – Available in black or white, integrates seamlessly into modern spaces.


    Technical Parameters


    Acoustic

    ParameterSpecification
    Frequency Response90 Hz – 20 kHz
    Max SPL114 dB
    Horizontal Coverage160° / 100°
    Vertical Coverage0° to –45°
    Typical Range14 m
    Max Range21 m
    Dynamic Range105 dB
    Speaker Units2 × 3.5", 4 × 2" full-range
    Sensitivity92 dB (1W/1 m)

    Electronics

    ParameterSpecification
    Audio Input1 line
    Normal Input0 dBu (2.19 Vpp)
    Max Input10 dBu (6.92 Vpp)
    TypeBalanced / AOIP
    Impedance47 kΩ @ 1 kHz

    Amplifier

    ParameterSpecification
    TypePWM (Class D)
    Total Power300 W
    Efficiency92%
    THD+N0.1% @ 10 W rms/channel
    ProtectionsOverheat >120°C, short circuit

    DSP Module

    ParameterSpecification
    Processor56-bit DSP, 145 MHz
    Sampling Rate48 kHz
    FunctionsHP/LP filters, 7-band EQ, volume, delay 1 ms, signal detection




    GB4224PB

    Corporate Advantages

    • Source Factory

      Source Factory

      16 years of focus on conference system R&D and production factory, following international standards.

    • OEM/ODM

      OEM/ODM

      OEM and ODM customized services to meet individual needs.

    • Self-developed Stack

      Self-developed Stack

      Strong R&D capabilities, continuous optimization and iteration, based on superb.

    • Core Intellectual Property

      Core Intellectual Property

      50 patents and more than 200 intellectual property rights.

    • Service and Support

      Service and Support

      1 year comprehensive warranty, providing responsive support to ensure customer satisfaction.

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    Honors and Certifications

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