ไมโครโฟน SHURE BETA91 A Kick Drum Microphone
BETA91 A ชนิดคอนเดนเซอร์ รูปแบบการรับเสียง Half-cardioid ใช้กับเครื่องดนตรีที่มีความถี่ต่ำ ตอบสนองความถี่ 20 – 20,000 Hz Impedance 146Ω
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฿16,000.00 ฿10,900.00
Description
ไมโครโฟน SHURE BETA91 A Dynamic Kick Drum Microphone
BETA91 A ชนิดคอนเดนเซอร์ รูปแบบการรับเสียง Half-cardioid ใช้กับเครื่องดนตรีที่มีความถี่ต่ำ ตอบสนองความถี่ 20 – 20,000 Hz Impedance 146Ω
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).
Features:
- 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
Specifications
- 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
Video
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