SPECIFICATIONS

All measurements taken with microphone mounted on a wooden surface 76.2 cm x 76.2 cm (30 in. x 30 in.).

Frequency Response (Figure 7)

50 to 17,000 Hz

Polar Pattern (Figure 8)

Cardioid (MX392/C, MX393/C)

Supercardioid (MX392/S, MX393/S)

Omnidirectional (MX392/O, MX393/O)

Output Impedance

EIA Rated at 150 Ω (180 Ω actual)

Sensitivity (at 1 kHz, open circuit voltage)

Cardioid Cartridge: ±27.5 dBV/Pa (4.22 mV)

Supercardioid Cartridge: ±26.5 dBV/Pa (4.73 mV)

Omnidirectional: ±22.0 dBV/Pa (7.94 mV)

1 Pascal=94 dB SPL

Maximum Sound Pressure Level

(1 kHz at 1% Total Harmonic Distortion, 1 kΩ load)

Cardioid: 117.0 dB

Supercardioid: 116.0 dB

Omnidirectional: 111.5 dB

Signal to Noise Ratio (referenced at 94 dB SPL)

Cardioid: 71.0 dB

Supercardioid: 72.0 dB

Omnidirectional: 76.5 dB

Equivalent Output Noise (A-weighted)

Cardioid: 23.0 dB

Supercardioid: 22.0 dB

Omnidirectional: 17.5 dB

Dynamic Range

94.0 dB

Common Mode Rejection

45 dB minimum, 10 Hz to 100 kHz

Switch Attenuation

50 dB minimum

Preamplifier Output Clipping Level

±6 dBV (0.5 V)

Polarity

Positive sound pressure on diaphragm produces positive voltage on pin 2 relative to pin 3 of output connector.

Logic Connections (MX392 Only)

LED IN: Active low (￿1.0v), TTL compatible. Absolute

maximum voltage: ±0.7V to 50V.

SWITCH OUT: Active low (￿0.5V), sinks up to 20mA,

TTL compatible. Absolute maximum voltage: ±0.7V to 24V (up to 50V through 3kΩ).

Power Requirements

11 to 52 Vdc phantom

2.0mA current consumption

Environmental Requirements

Operating Temperature Range: ±18° C to 57° C (0° F to 135° F)

Relative Humidity: 0 to 95% Dimensions (Figure 9)

Certification

Conforms to European Union directives, eligible to bear CE marking; meets European Union EMC Immunity Requirements (EN 50082±1: 1992).

REPLACEMENT PARTS

Omnidirectional Cartridge . . . . . . . . . . . . . . . . . . . . . R183

Supercardioid Cartridge . . . . . . . . . . . . . . . . . . . . . . . R184

Cardioid Cartridge . . . . . . . . . . . . . . . . . . . . . . . . . . . . R185

NOTE: For technical data by Fax, phone 1-800-488-3297 and follow the recorded instructions. For additional techni- cal assistance, phone Shure at (847) 866-2200. In Europe, phone 49-7131-72140.

SHURE, the Shure logo, and MICROFLEX are registered trade- marks of Shure Incorporated. Tini Q-G is a registered trademarks of Switchcraft Incorporated.

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Shure MX300 manual Specifications, Replacement Parts

MX300 specifications

The Shure MX300, MX392/C, and MX392/S are professional-grade microphones designed for various applications, particularly in conferencing, presentations, and theater productions. Each model boasts a unique set of features and technologies that make them ideal choices for audio professionals seeking high-quality sound in a compact and versatile form factor.

The Shure MX300 is a boundary microphone known for its exceptional sound pickup capabilities. It features a low-profile design that allows for discreet placement on conference tables or stage floors. The microphone utilizes a wide frequency response range, ensuring clear and accurate sound reproduction. The MX300 is equipped with a cardioid polar pattern, which effectively reduces ambient noise and feedback, focusing on the sound source directly in front of it. This makes it especially suitable for situations with multiple speakers, as it minimizes interference from surrounding sounds.

The MX392/C and MX392/S models share many similarities but cater to different user needs. The MX392/C comes equipped with a connector specifically designed for connection to a variety of audio systems, making it a flexible choice for various installations. This model also features an integrated preamplifier, which enhances the microphone's sensitivity and overall performance. The MX392/S, on the other hand, is designed for use with Shure's wireless systems, allowing for a more mobile and dynamic setup without compromising on sound quality.

Both the MX392/C and MX392/S utilize Shure's proprietary technologies to deliver pristine audio quality. The microphones employ high-quality condenser elements that capture a broad range of frequencies, providing a natural sound that accurately represents the speaker's voice. Additionally, the microphones are constructed with rugged materials designed to withstand the rigors of professional use, ensuring durability and longevity.

Another notable feature of these microphones is their ease of installation and use. With a variety of mounting options, including desktop bases and flexible goosenecks, users can customize their microphone placement for optimal performance. The built-in LED status indicator on the MX392 models helps users ensure that the microphone is powered and functioning properly.

In summary, the Shure MX300, MX392/C, and MX392/S microphones combine cutting-edge technology, robust construction, and user-friendly design to provide exceptional audio performance for a range of professional applications. Whether for conference settings, public speaking, or live performances, these microphones offer reliability and clarity, ensuring that every voice is heard.