Shure SM87A
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SM87A Details
Cartridge Type
Condenser (electret bias)
Frequency Response
50 to 20,000 Hz
Polar Pattern
Supercardioid
Output Impedance
Rated at 150 ohms (100 ohms actual +/- 20%)
Recommended minimum load impedance: 800 ohms
Sensitivity (at 1,000 Hz)
Open Circuit Voltage: -52.5 dBV/Pa (2.4 mV)
(1 Pa = 94 dB SPL)
Clipping Level (at 1,000 Hz)
1000 ohm Load: -6 dBV (0.5 V)
Maximum SPL (at 1,000 Hz)
140.5 dB (0.25% THD, 1000 ohm load)
Self-Noise (equivalent sound pressure level; measured with true rms voltmeter)
24 dB typical, A-weighted
26 dB typical, weighted per DIN 45 405
Dynamic Range
116.5 dB (maximum SPL to A-weighted noise level)
Signal-to-Noise Ratio
70 dB at 94 dB SPL (IEC 651)*
*S/N ratio is difference between 94 dB SPL and product's equivalent self noise (SPL A-weighted).
Polarity
Positive pressure on diaphragm produces positive voltage on pin 2 relative to pin 3.
Power
Phantom Supply Requirement: 11 to 52 Vdc, positive at both pins 2 and 3.
Current Drain: 1.0 to 1.2 mA
Connector
Three-pin (XLR) professional audio.
Case
Aluminum construction with steel grille and satin black finish.
Dimensions
See User Guide.
Net Weight
200 grams (7 oz)
Condenser (electret bias)
Frequency Response
50 to 20,000 Hz
Polar Pattern
Supercardioid
Output Impedance
Rated at 150 ohms (100 ohms actual +/- 20%)
Recommended minimum load impedance: 800 ohms
Sensitivity (at 1,000 Hz)
Open Circuit Voltage: -52.5 dBV/Pa (2.4 mV)
(1 Pa = 94 dB SPL)
Clipping Level (at 1,000 Hz)
1000 ohm Load: -6 dBV (0.5 V)
Maximum SPL (at 1,000 Hz)
140.5 dB (0.25% THD, 1000 ohm load)
Self-Noise (equivalent sound pressure level; measured with true rms voltmeter)
24 dB typical, A-weighted
26 dB typical, weighted per DIN 45 405
Dynamic Range
116.5 dB (maximum SPL to A-weighted noise level)
Signal-to-Noise Ratio
70 dB at 94 dB SPL (IEC 651)*
*S/N ratio is difference between 94 dB SPL and product's equivalent self noise (SPL A-weighted).
Polarity
Positive pressure on diaphragm produces positive voltage on pin 2 relative to pin 3.
Power
Phantom Supply Requirement: 11 to 52 Vdc, positive at both pins 2 and 3.
Current Drain: 1.0 to 1.2 mA
Connector
Three-pin (XLR) professional audio.
Case
Aluminum construction with steel grille and satin black finish.
Dimensions
See User Guide.
Net Weight
200 grams (7 oz)
Reviews, Tests en Opmerkingen
Snel geleverd, goede service. - Job, Haarlem
Bedankt voor de zeer snelle en duidelijke telefonische hulp. Zeer tevreden - Jolien
Fijn om advies van echte experts te krijgen - mvr Hermans
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