Crown CM31/WHITE

The Crown CM-31 is a professional-quality,supercardioid condenser microphone designed for inconspicuous miking of a choir, orchestra or stage. It also can hang over conference tables or discussion groups for inconspicuous isolated miking. The CM-31 consists of two parts: the micro-phone with a permanently attached 30' cable and the cylindrical electronics power module. The mic cable connects to the power module which adapts the microphone for phantom powering and includes a low-cut switch. Cable connection is via miniature 3-pin connectors. The power module output is balanced, low imped-ance. It is protected against static and radio-frequency interference. The CM-31 has a smooth, wide-range frequency response for natural reproduction of the singing voice, organ or other musical instruments. Extreme low frequencies are filtered out to reduce pickup of room rumble. The microphone has a built-in removable hanger which allows easy position adjustment. Available in black or white.

Specifications

• Type: Unidirectional condenser
• Transducer: Electret condenser
• Frequency Response (typical): 40 Hz to 20,000
• Polar Pattern: Supercardioid
• Impedance: 150 ohms, balanced. Recommended minimum load impedance 1000 ohms.
• Open Circuit Sensitivity: 10 mV/Pa (–40 dB re 1 volt/Pa)
• Power Sensitivity: –37.5 dB re 1 mW/Pa
• Equivalent Noise Level: 28 dB SPL typical (0 dB = 0.0002 dyne/cm2), A-weighted
• S/N Ratio: 66 dB at 94 dB SPL
• Maximum Sound Pressure Level: 120 dB SPL produces 3% THD
• Mic-Cable Connector: TA3F (mini XLR-type)
• Power Module Connector (input): TB3M (mini XLR-type)
• Power Module Connector (output): 3-pin male XLR-type
• Operating Voltage: Phantom power, 12 to 48 volts DC, positive voltage on pins 2 and 3 with respect to pin 1 of output terminal
• Materials: Brass housing, steel power module faceplate
• Finish: White
• Weight (microphone and cable): 4 ounces (113 grams)
• Weight (microphone, cable and circuit): 9.5 ounces (269 grams)
• Cable: White, 30-ft (9.15-m) 2-conductor shielded 0.1-in. (0.254-cm) diameter cable from microphone to electronics; none supplied for electronics output. Use 2-conductor shielded microphone cable.
• Dimensions (microphone only): .530" (1.3 cm) diameter, 1.446" (3.7 cm) length
• Included Accessories: WS-5W windscreen (white)