- Description
Details
Its wide frequency response, low noise characteristics and low RF susceptibility have made it a standard for applications involving acoustic instruments, especially guitar, piano and cymbals.
The SM81-LC is ruggedly constructed. It operates on phantom power and performs over a wide range of temperatures and humidity conditions. It is furnished with a swivel adapter, attenuator-switch lock, foam windscreen and case for carrying and storage.- Features
Features
- 20 Hz to 20 kHz frequency response
- Flat response curve for accurate reproduction of sound sources
- Low noise and high output clipping level
- Low distortion over a wide range of load impedances
- Cardioid polar pattern, uniform with frequency and symmetric about axis, providing maximum rejection
- Low RF susceptibility
- Selectable low-frequency response: flat, 6 or 18 dB/octave rolloff
- 0 dB/10 dB lockable attenuator switch
- Phantom powering (DIN 45 596 voltages of 12 to 48 Vdc)
- Rugged steel construction for durability
- Field-usable over wide range of temperature and humidity conditions
- Phantom power required
- Specification
Type Condenser Frequency Response 20 to 20,000 Hz Polar Pattern Cardioid Sensitivity (at 1,000 Hz) Open Circuit Voltage: -45 dBV/Pascal (5.6 mV) (1 Pa = 94 dB SPL) Impedance Rated at 150 ohms (85 ohms actual)Recommended minimum load impedance: 800 ohms Output Clipping Level 800 ohm Load: -4 dBV (0.63 V)150 ohm Load: -15 dBV (0.18 V) Maximum SPL (at 1,000 Hz) 800 ohm load: 136 dB (attenuator at 0) 146 dB (attenuator at -10) Maximum SPL (at 1,000 Hz) 150 ohm load: 128 dB (attenuator at 0) 138 dB (attenuator at -10) Self-Noise 16 dB typical, A-weighted19 dB typical, weighted per DIN 45 405 Hum Pickup -3 dB equivalent SPL in a 1 mOe field (60 Hz) Signal-to-Noise Ratio 78 dB (IEC 651)* at 94 dB SPLS/N ratio is difference between 94 dB SPL Overvoltage and Reverse Polarity Max. external voltage applied to pins 2 and 3 with respect to pin 1: +52 Vdc Protection Reverse polarity protection: 200 mA max. (diode-clamped) Polarity Positive pressure on diaphragm produces positive voltage on pin 2 relative to pin 3 Power 11 to 52 vdc, 1.2 mA Case Steel construction with vinyl metallic paint finish and stainless steel screens Connector Three-pin professional audio connector (male XLR type) Dimensions 212 mm (7-9/16 in.) L x 23.5 mm (2 in.) W at the widest point Net Weight 0.507 lbs (230 g) - Reviews
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