Crown PZM30D Large Pressure Zone Boundary Condenser Microphone for vocals and instruments with HPF


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Dale #:AKG-3323H00010

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  • This is a Pressure Zone Microphone designed for professional recording, sound reinforcement and broadcasting. It has many applications, from miking full orchestras or individual musical instruments to security or teleconferencing. This has a switchable dual frequency response: rising (R) or flat (F). The “rising” position adds brilliance. This makes it useful wherever a crisp attack is desired, such as on percussion, drums, or piano. The user can get a bright sound without boosting high frequencies on the recording console; the result is lower noise.

    The “flat” position provides a smooth, flat high-frequency response for natural sound reproduction. These sturdy microphones are especially reliable because they can be used with a rugged detachable cable. The output is a male 3-pin XLR type, balanced and low impedance, which permits long cable runs without hum pickup or high-frequency loss.

    Like other Pressure Zone Microphones, the PZM-30D utilizes the Pressure Recording Process in which a miniature condenser microphone capsule is mounted in the “Pressure Zone” just above the boundary, a region where sound coming directly from the sound source combines in phase with sound reflected off the boundary. The benefits are a wide, smooth frequency response free of phase interference, with excellent clarity and reach, a hemispherical polar pattern, and uncolored off-axis response.


    • Pressure Zone Microphone design prevents coloration from surface sound reflections
    • Choice of fl at response or rising high frequency response
    • PZM-30D uses a rugged detachable cable.
    • Hemispherical pickup pattern
  • TypePressure Zone Microphone
    TransducerElectret condenser
    Frequency response20 Hz to 20 kHz.
    Polar patternHemispherical when used on a floor, wall or ceiling.
    Open circuit sensitivity7 mV/Pa (–43 dB re 1 volt/Pa).
    Power sensitivity–43 dB re 1 mW/Pa. EIA sensitivity –135 dBm.
    Impedance240 ohms, balanced. Recommended minimum load impedance 1000 ohms.
    Self-noise20 dB equivalent sound pressure level, A-weighted.
    S/N ratio74 dB at 94 dB SPL.
    Maximum Sound Pressure Level150 dB SPL at the microphone produces 3% THD.
    PolarityPositive pressure on the diaphragm produces positive voltage on pin 2 with respect to pin 3 of the output connector.
    Operating voltagePhantom power, 12 to 48 volts DC, positive voltage on pins 2 and 3 with respect to pin 1 of the output connector.
    Current drain1.1 mA
    ConnectorMale 3-pin XLR-type.
    Cableuse 2-conductor shielded microphone cable.
    SwitchFrequency-response select switch for rising or flat response.
    Weight6.5 ounces (184 grams).
    Dimensions6 in. x 5 in. x .75 in. (15.2 cm x 12.7 cm x 1.9 cm).
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