| Transducer Type |
Condenser |
|
The Shure Beta 87A is a premium quality supercardioid hand-held electret condenser vocal microphone with exceptionally smooth frequency response and high sound pressure level capability. Used for professional sound reinforcement, broadcasting, and studio recording applications, the Beta 87A combines superb performance with the ruggedness needed for touring and field production.
The Beta 87A features a controlled low-frequency roll-off that compensates for proximity effect and prevents the “boomy” sound often associated with close pick-up. The characteristic Shure presence rise brightens the upper midrange. The tight supercardioid pattern, with null points at approximately 125 degrees, provides maximum isolation from other vocalists or instruments while offering minimal off-axis coloration. The Beta 87A operates on phantom power.
|
| Polar pattern |
Supercardioid |
| Frequency response |
50 Hz - 20 kHz |
| Impedance |
Rated at 150 ohms (100 ohms actual +/- 20%)
Recommended minimum load impedance: 800 ohms |
| Sensitivity |
-52.5 dBV/Pa, (2.2 mV), 1 Pascal=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 |
23.5 dB typical, A-weighted
25.5 dB typical, weighted per DIN 45 405 |
| Dynamic Range |
117 dB (maximum SPL to A-weighted noise level) |
| Signal-to-Noise Ratio |
70.5 dB at 94 dB SPL (IEC 651) |
| 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 |
3pin professional audio connector (male XLR type) |
| Weight |
207g (7.6 oz.) |
| Dimensions |
192mm x 51mm x 21mm |
