传声器——前置放大器组合

型号	动态范围	频率范围	灵敏度

4944A - ¼-inch pressure-field microphone, 4 Hz to 70 kHz, 1.0 mV/Pa Designed to be used in small closed couplers, close to hard reflective surfaces or flushmounted.	48 - 169 dB	16 - 70000 Hz	0.9 mV/Pa


4944B - ¼-inch pressure-field microphone, 4 Hz to 70 kHz, 1.0 mV/Pa Designed to be used in small closed couplers, close to hard reflective surfaces or flushmounted. With 10-32 UNF connector.	48 - 169 dB	16 - 70000 Hz	0.9 mV/Pa


Type 4948 - 带一个同轴电缆的航空航天表面传声器 Designed to be used on airplane surfaces during in-flight testing and is also well suited to wind-tunnel testing, limited spaces or near to hard reflective surfaces.	55 - 160 dB	5 - 20000 Hz	1.4 mV/Pa


4954-A - ¼-inch free field microphone with SMB connector Designed for general random-incidence measurements and for noise measurements in accordance with ANSI standards.	40 - 159 dB	16 - 80000 Hz	2.8 mV/Pa


4954-B - ¼'-inch free field microphone with 10–32 UNF connector Designed for high-level and high-frequency measurements.	40 - 159 dB	16 - 80000 Hz	2.8 mV/Pa


4959 - Short 20 kHz microphone for handheld arrays Designed for use in Brüel & Kjær’s hand-held and foldable arrays.	32 - 134 dB	50 - 20000 Hz	11.2 mV/Pa