MK 342 E 1/4“ measurement microphone capsule with constant pressure response • WS3P acc. IEC 61094-4 • pressure • 3.5 Hz to 70 kHz • 60 dBA to 186 dB • pre-polarized The 1/4“ microphone capsule MK 342 E has a constant pressure response and is therefore optimized for correct acoustic measurements on boundary layers or in acoustic couplers with extreme sound pressure levels. The equalization of the static air pressure is by means of a capillary to the preamplifier (rearvented) or by means of a lateral capillary (sidevented). The diaphragm is protected against mechanical damage by a protection grid. Delivery Microphone capsule, nickel, rear-vented in wooden case 127 mm x 87 mm x 55 mm Microphone capsule, nickel, side-vented in wooden case 127 mm x 87 mm x 55 mm Options and Accessories Adapter for 1/4“microphone capsules to 1/2“preamplifiers Angle adapter 1/4“ Windscreen A

Technical Specifications Transducer type Frequency range pressure response Capacitive pressure transducer 3.5 Hz to 70 kHz 5 Hz to 50 kHz 20 Hz to 20 kHz 0.25 mV/Pa -72 dB ±2.5 dB 186 dB 183 dB 60 dBA pre-polarized 4.2 pF -50 °C to +100 °C -50 °C to +80 °C ≤0.01 dB/K -0.00001 dB/Pa 6.35 mm ± 0.02 mm 7.00 mm ± 0.02 mm 9.7 mm 2g 5.7 mm 60 UNS 6.35 mm 60 UNS Sensitivity Sensitivity Max. SPL for 3% THD at 1 kHz Inherent noise Polarization voltage Capacitance at 1 kHz Temperature range, operation Temperature range, storage Main ambient temperature coefficient Main ambient pressure coefficient Diameter...