The Shure Beta 91™ is specifically designed for kick drums and other bass instruments. The Beta 91 combines superior "attack" and "punch" for studio quality sound, even at the extremely high sound pressure levels encountered inside a kick drum. Its boundary effect design produces a strong, solid low-end response that has been specifically tailored for heavy bass applications. The microphone's cardioid pattern provides outstanding gain-before-feedback and excellent rejection of unwanted sound, making the Beta 91 ideal for live concert applications. The low profile design of the Beta 91 eliminates the need for external mounting hardware - just throw it in your kick drum and play Featuring a tailored frequency response designed specifically for kick drums and other instruments, the Shure Beta 91 microphone provides superb attack and "punch," and delivers studio quality sound, with minimal distortion even at extremely high sound pressure levels. Its boundary effect design produces a strong, solid low-end response that has been specifically tailored for heavy bass applications. The microphone's cardioid pattern provides outstanding gain-before-feedback and excellent rejection of unwanted sound, making the Beta 91 ideal for live concert applications. The low profile design of the Beta 91 eliminates the need for external mounting hardware--just throw it in your kick drum and play. KEY FEATURES * Frequency response shaped specifically for kick drums and other instruments * Wide dynamic range for use in high SPL environments * Low-profile design requires no external mounting hardware * Detachable cable for easy storage SPECIFICATIONS * Type: Cardioid condenser (electret bias) * Frequency Response: 20 to 20,000 Hz * Polar Pattern: Half-cardioid (cardioid in hemisphere above mounting surface), uniform with frequency, symmetrical around axis. * Output Level (at 1,000 Hz): Open Circuit Voltage: -59 dBV/Pa* (1.1 mV) typical; *1 Pa = 94 dB SPL * Maximum SPL: (20 Hz to 20 kHz, less than 1% THD) * 2.5 kilohm load: 160 dB * 1 kilohm load: 156 dB * Preamplifier Output Clipping Level: (20 Hz to 20 kHz, less than 1% THD*) * 2.5 kilohm load: 6 dBV (2.0 V) * 1 kilohm load: 2 dBV (1.26 V) * *THD of the microphone preamplifier when applied input signal is equivalent to the cartridge output at specified SPL. * Dynamic Range: (20 Hz to 20 kHz, less than 1% THD, 2.5 kilohm load); 25 dB (max SPL minus A-weighted noise) * Output Noise: 35 dB SPL (typical), A-weighted * Signal-to-Noise Ratio: 59 dB re 94 dB SPL * Output Impedance: 150 ohms (actual) * Polarity: Positive pressure on diaphragm produces positive voltage on pin 2 with respect to pin 3 * Power: Phantom Power: 48 Vdc +/- 4 Vdc (IEC-268-15/DIN 45 596), positive pins 2 and 3 * Electromagnetic Hum Pickup: -7.5 dB equivalent SPL in 1 mOe field (60 Hz) * Cable: 4.6 m (15 ft) heavy-duty, two-conductor shielded, TA4F to TA3F connectors * Case: Matte-black , painted, die-cast, zinc-alloy case with matte-black steel grille * Dimensions: 95 mm x 129 mm x 19 mm (3.75 in. x 5.08 in. x 0.75 in.) * Weight: 13.5 ounces (less cable) The Shure Beta 91 kick drum microphone. Frequency response. Polar pattern. FROM THE MANUFACTURER For kick drums and other bass instruments, nothing compares to the Shure Beta 91. The Beta 91 condenser cartridge combines superior "attack" and "punch" for studio quality sound -- even at the extremely high sound pressure levels encountered inside a kick drum. Its boundary effect design produces a strong, solid low-end response that has been specifically tailored for heavy bass applications. Its cardioid pattern provides outstanding gain before feedback and superior rejection of unwanted sound, making the Beta 91 ideal for live concert applications. What's more, the low profile design of the Beta 91 eliminates the need for external mounting hardware, while its heavy-duty Triple-Flex® cable represents a significant improvement over its highly successful predecessor, the SM91A. And it all comes together in a durable design that lives up to Shure's legendary standards for quality, reliability, and great sound.

Legendary Shure quality, ruggedness, and reliability. Detachable cable for easy storage. Low-profile design requires no external mounting hardware. Wide dynamic range for use in high SPL environments. Frequency response shaped specifically for kick drums and other instruments.