Kondenzátorový mikrofon pro velký buben 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 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 mikrofon kondenzátorový pro velký bubenShure Beta 91 s kardioidní směrovou charakteristikou je speciálně navržen pro snímání basového bubnu a dalších basových nástrojů. Je ideální pro živé hraní. Díky nízkému profilu mikrofonu je montáž velice jednoduchá. princip kondenzátorový směrová charakteristika superkardioidní frekvenční rozsah od (Hz) 20 Hz frekvenční rozsah do (kHz) 20 kHz konektor XLR úroveň akustického tlaku 156 dB citlivost -59 dBV/Pa (1.1 mV) impedance 150 Ohm odstup signál/šum 59 dB Kondenzátorový mikrofon s půl-kardioidní charakteristikou (60° snímnanie) a použitím zejména na nahrávání basového bu