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SHURE BETA91A  
รหัส : BETA91A
ยี่ห้อ : SHURE
รุ่น : BETA91A
ราคาปกติ :  18,300.00 บาท      
ราคาพิเศษ :  10,900.00บาท

รายละเอียดย่อ :
คอนเดนเซอร์ไมโครโฟน ไมค์กระเดื่อง Kick Drum microphone
รายละเอียดทั้งหมด :

 

SHURE BETA91A คอนเดนเซอร์ไมโครโฟน ไมค์กระเดื่อง Kick Drum microphone

คอนเดนเซอร์ไมโครโฟน สำหรับเครื่องดนตรีที่มีความถี่ต่ำ เช่น กระเดื่อง เป็น Kick Drum microphone

The Shure Beta 91A is designed for use with kick drums, as well as other traditional low-frequency applications including piano. Featuring an updated microphone capsule, integrated preamplifier, and XLR connection, Beta 91A offers a strong low-frequency response and is specifically tailored for bass frequency applications. The Beta 91A combines superior attack and punch for studio-quality sound, even at extremely high sound pressure levels (SPL).

  • Uniform half-cardioid polar pattern for maximum gain-before-feedback and rejection of off-axis sound
  • Precision-engineered low-profile design features integrated preamplifier and XLR connector to maximize setup efficiency while minimizing stage clutter
  • Frequency response tailored for kick drum/low frequency applications with a wide dynamic range for use in high SPL environments
  • Two-position contour switch to maximize attack and clarity depending on application: select the flat response setting for natural sound in most applications or the “low-mid scoop” setting for a strong low frequency “punch” with plenty of higher frequency attack
  • Requires no external mounting or accessories for ease of use and storage
  • Furnished with zipper pouch 

 

Shure Beta 91A Condenser Boundary Microphone Features :

  • Type: Electret Condenser
  • Frequency Response: 20Hz-20kHz
  • Polar Pattern: Half-cardioid (cardioid in hemisphere above mounting surface)
  • Impedance: 146 Ohms
  • Sensitivity (at 1kHz, open circuit voltage): -48.5 dBV/Pa (3.8mV)
  • Maximum SPL ( kHz at 1% THD): 1,000 ohm load: 151dB; 2500 Ohm load: 155dB
  • Signal-to-Noise Ratio (referenced at 94 dB SPL at 1kHz): 64 dB
  • Dynamic Range (at 1kHz): 1,000 Ohm load: 121.5dB; 2500 Ohm load: 125.5dB
  • Common Mode Rejection (20Hz-20kHz): >55dB
  • Clipping Level (20Hz-20 kHz at 1% THD) 1,000 ohm load: 7.50dBV, 2,500 ohm load: 12.5dBV
  • Self Noise (typical, equivalent SPL, A-weighted): 29.5dB SPL-A
  • Polarity: Positive pressure on diaphragm produces positive voltage on pin 2 with respect to pin 3
  • Weight: 16.6 oz.
  • Frequency Contour Switch: 7dB of attenuation centered at 400Hz
  • Connector: 3-pin XLR, balanced
  • Power Requirements: 11-52 Vdc phantom power, 5.6 mA

 

Type
Electret Condenser
Frequency Response
20 to 20,000 Hz
Polar Pattern
Half-cardioid (cardioid in hemisphere above mounting surface) 
Impedance
146 Ohms
Sensitivity (at 1 kHz, open circuit voltage)
-48.5 dBV/Pa (3.8mV)
1 Pascal=94 dB SPL
Maximum SPL (1 kHz at 1% THD)
1000 Ohm load: 151 dB, 2500 Ohm load: 155 dB
Signal-to-Noise Ratio (referenced at 94 dB SPL at 1 kHz)
64 dB
S/N ratio is difference between 94 dB SPL and equivalent SPL of self noise, A-weighted
Dynamic Range (at 1 kHz)
1000 Ohm load: 121.5 dB
2500 Ohm load: 125.5 dB
Common Mode Rejection (20 Hz to 20 kHz)
> 55 dB

Clipping Level (20Hz-20 kHz at 1% THD) 
1000 Ohm load: 7.50 dBV, 2500 Ohm load: 12.5 dBV 
THD of microphone preamplifier when applied input signal is equivalent to cartridge output at specified SPL

Self Noise (typical, equivalent SPL, A-weighted)
29.5 dB SPL-A 
Polarity
Positive pressure on diaphragm produces positive voltage on pin 2 with respect to pin 3
Weight
Net: 470 g (16.6 oz.)
Frequency Contour Switch
7 dB of attenuation centered at 400 kHz  
Connector
Three-pin professional audio (XLR), male, balanced
Power Requirements
11-52 Vdc phantom power, 5.6 mA
 

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