玩二八杠怎么赢:舒爾有線界面話筒 SHURE MX391


上海視聽網--SHURE界面話筒系列產品:舒爾有線界面話筒 SHURE MX391

產品介紹

精巧的外型設計及卓越的聲音還原能力,Microflex界面話筒是會議室理想的選擇方案。具有可編程功能、無聲薄膜開關、可互換話筒頭、邏輯輸入和輸出以及LED指示燈等特性,Microflex界面話筒在各種應用場合都能夠提供高品質聲音。

■ 心型、超心型及無指向性
■ 黑色或白色型號可供選擇
■ 可編程、無聲薄膜開關
■ 邏輯輸入和輸出端子
■ LED指示燈

提供型號:

MX391W C/S/O 白色,串聯前置放大器,配有具有4-pin mini接頭的電纜

C=心型,S=超心型,O=無指向性

MICROPHONE SPECIFICATIONS
Polar Pattern
Cardioid (MX391/C, MX391W/C, MX391LP/C, MX391WLP/C)
Supercardioid (MX391/S, MX391W/S, MX391LP/S, MX391WLP/S)
Omnidirectional (MX391/O, MX391W/O, MX391LP/O, MX391WLP/O)
Environmental Requirements
Operating Temperature Range: -18 to 57 degrees C (0 to 135 degrees F)
Relative Humidity: 0 to 95%
Dimensions
See User Guide
PREAMPLIFIER SPECIFICATIONS MX391 ONLY
These specifications apply only to the MX391/MX391W microphones when used with the supplied preamplifier. All measurements taken with the microphone mounted on a 76.2 cm x 76.2 cm (30 in. x 30 in.) wooden surface and with the sound source incident at 30 . with respect to the surface plane.
Frequency Response
50 to 17,000 Hz
Output Impedance (at 1000 Hz)
180 ohms actual (rated at 150 ohms)
Open Circuit Sensitivity 1 kHz ref. 1 V per Pascal *
Cardioid: -29.6 dB (33.5 mV)
Supercardioid: -28.3 dB (38.5 mV)
Omnidirectional: -21.5 dB (81.4 mV)
All settings -12 dB at 0 gain; *1 Pascal = 94 dB SPL
Maximum Sound Pressure Level (1 kHz at 1% Total Harmonic Distortion, 1 k ohm load)
Cardioid: 118.8 dB
Supercardioid: 117.5 dB
Omnidirectional: 110.7 dB
All settings +6 dB at 0 gain
Signal to Noise Ratio (referenced at 94 dB SPL)
Cardioid: 71.4 dB
Supercardioid: 72.7 dB
Omnidirectional: 79.5 dB
Equivalent Output Noise (A-weighted)
Cardioid: 22.6 dB SPL
Supercardioid: 21.3 dB SPL
Omnidirectional: 14.5 dB SPL
Dynamic Range at 1 k ohm Load
96.2 dB
100 dB at 0 gain
Common Mode Rejection
45 dB minimum, 10 Hz to 100 kHz
Preamplifier Output Clipping Level
-6 dBV (0.5 V)
12 dB at 0 gain
Polarity
Positive sound pressure on diaphragm produces positive voltage on pin 2 relative to pin 3 of the preamplifier XLR output connector.
Power Requirements
11 to 52 Vdc phantom
2.0 mA current consumption

產品價格

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