Overview
The USM 69 i Variable Pattern Stereo Microphone is a dual capsule stereo microphone with two K67 multi-pattern capsules and independent amplifier stages operating independently from each other. The capsules are stacked and rotated at a 270 degree angle for M/S and X/Y style stereo capturing.
Each capsule features individually switchable omnidirectional, cardioid, figure-8, hypercardioid and wide-angle cardioid polar patterns for the ultimate in flexible audio capturing. The USM 69 i features independent output stages allowing the capsules to function as individual mono microphones for audio backup capturing applications. The USM 69 i is a powerful stereo microphone for crucial studio recording of vocals and instruments.
Features
- Switchable stereo microphones
- Two pressure-gradient transducers with double membrane capsules
- 5 selectable directional patterns: omni, wide angle cardioid, cardioid, hypercardioid, figure-8
- MS- or XY-stereophony
- Capsules rotary by 270°
- Very low noise
- Freely adjustable aperture and pick-up angles
- Nickel finish
Specifications
| Acoustical operating principle | Pressure gradient transducer |
| Directional pattern | Omnidirectional, wide-angle cardioid, cardioid, hypercardioid, figure-8 |
| Frequency range | 20 Hz - 20 kHz |
| Sensitivity at 1 kHz into 1 kohm | 13 mV/Pa |
| Rated impedance | 150 ohms |
| Rated load impedance | 1000 ohms |
| Equivalent SPL CCIR 468-3 | 24 dB |
| Equivalent SPL DIN/IEC 651 | 13 dB-A |
| S/N ratio CCIR 468-3 | 70 dB |
| S/N ratio DIN/IEC 651 | 81 dB |
| Maximum SPL for THD 0.5% | 132 dB |
| Maximum output voltage | 3 dBu |
| Dynamic range of the microphone amplifier DIN/IEC 651 | 119 dB |
| Supply voltage | 48 V ± 4 V |
| Current consumption | 2 x 0.7 mA |
| Matching connector | XLR 5F |
| Weight | 18 oz (510 g) |
| Length | 11.5” (293 mm) |
