Product Description
The U 87 Ai condenser microphone is a large diaphragm microphone with three polar patterns and a unique frequency and transient response characteristic. Users recognize the microphone immediately by its distinctive design. It is a good choice for most general purpose applications in studios, for broadcasting, film and television.
The U 87 Ai is used as a main microphone for orchestra recordings, as a spot mic for single instruments, and extensively as a vocal microphone for all types of music and speech.
Features
- Variable large diaphragm microphone
- Pressure-gradient transducer with double membrane capsule
- The studio microphone classic
- Three directional characteristics: omni, cardioid, figure-8
- Switchable low frequency roll-off
- Switchable 10dB pre-attenuation
- Ideal as main and as support microphone in the most differing recording situations
- Requires +48V phantom power
Product Specs
| Acoustical operating principle | Pressure gradient transducer |
| Directional pattern | Omnidirectional, cardioid, figure-8 plus |
| Frequency range | 20 Hz ... 20 kHz |
| Sensitivity at 1 kHz into 1 kohm | 20/28/22 mV/Pa1) |
| Rated impedance | 200 ohms |
| Rated load impedance | 1 kohms |
| Equivalent noise level, CCIR2) | 26/23/25 dB1) |
| Equivalent noise level, A-weighted2) | 15/12/14 dB-A1) |
| Signal-to-noise ratio, CCIR2) (rel. 94 dB SPL) | 68/71/69 dB1) |
| Signal-to-noise ratio, A-weighted2) (rel. 94 dB SPL) | 79/82/80 dB1) |
| Maximum SPL for THD 0.5%3) | 117 dB (cardioid) |
| Maximum SPL for THD 0.5% with preattenuation3) | 127 dB |
| Maximum output voltage | 390 mV |
| Supply voltage (P48, IEC 61938) | 48 V ± 4 V |
| Current consumption (P48, IEC 61938) | 0.8 mA |
| Matching connectors | XLR3F |
| Weight | 500 g |
| Diameter | 56 mm |
| Length | 200 mm |