MICROTECH GEFELL We reserve the right to make changes to this product and its accessories without prior notice. microphones & acoustic systems - founded 1928 by Georg Neumann © 04/2016 Microtech Gefell GmbH Test & Measurement Microtech Gefell GmbH · Georg-Neumann-Platz · 07926 Gefell · Germany Phone +49 (0)36649 882-0 · Fax +49 (0)36649 882-11 · www.microtechgefell.de · info@microtechgefel

The Business. microphones & acoustic systems The Support. before - during - after Application engineering Complete Microphones Sound intensity probes Outdoor/Environmental Outdoor and Environmental microphones Calibration equipment Power Supplies

1950 New condenser measurement microphones are developed and become part of the serial production. so far - so good 1928 Georg Neumann and Erich Rickmann establish the limited partnership Georg Neumann & Co. The idea behind this new company lies in manufacturing microphones following the capacitive transducer concept. An aim they manage to achieve for the first time in serial production with the condenser microphone CMV 3. 1933 participation at the „Große Deutsche Funkausstellung” leads to a massive rise of sales within Germany and of exports. During this time, representations are set up in England,...

The Business microphones & acoustic systems before - during - after Microtech Gefell designs, manufactures and supplies microphones and acoustic systems. A customer oriented approach is practiced to achieve the optimal usability of our products in their daily use. The products themselves should be regarded as special tools having particular properties appropriate for their intended applications, and perform at the highest quality level. Every single product is assembled entirely by hand by our specialists, then tested and calibrated. The experience amassed is applied to ensure that product quality...

Application engineering Answering the demands of the modern market, our service spectrum also includes application engineering, consultation services and the development & construction of special devices in the scientific-technical field. Here our extensive experience comes into play, which we have gained with the construction of test benches for vehicles on the one hand and in the recording studio and sound system installation on the other hand. Our team of engineers will solve your device-specific or room-acoustic problems. As a mechanical-electronic manufacturing company of high flexibility...

Measurement microphones Measurement Technology Studio Technology Connectors The product range of Microtech Gefell comprises microphones for applications in audio technology as well as in measurement, factory calibration, application-specific system solutions and special manufacturing in the areas of acoustic, electronic, mechanical and service & repair. This overview contains all products of the measurement technology. The focus of development and production is in the sector of sound sensing. Microtech Gefell has a tradition-rich manufacturing department for precision measurement microphones....

Capsules 1” Measurement Microphone Capsules Frequency Type Free field Free field Diffuse field Operating Temperature Range / °C 1/2” Measurement Microphone Capsules Sensitivity / mV/Pa Dynamic Range* / dB A (max. SPL for 3% THD) Polarisation voltage / V Frequency Type Free field Free field Free field Sensitivity / mV/Pa Dynamic Range* / dB A (max. SPL for 3% THD) Polarisation voltage / V Operating Temperature Range / °C MK 231 | B | E | BE MK 255; (MK 233 | B | BE)** (= MKS 221 E) Frequency Type Frequency Range (Hz ... kHz) Diffuse field Free field Free field Sensitivity / mV/Pa Dynamic Range*...

Preamplifiers Preamplifiers. Interfaces with LEMO ® connectors MV 203; MV 204 Application Capsule polarisation voltage for WME 940 with heating regulation for insert voltage calibration universal; for intensity probes by power supply; by power supply; by power supply; by power supply; by power supply; none none For the connection of high-quality measurement microphone capsules, Microtech Gefell produces suitable measurement microphone preamplifiers. This impedance converter allows the connection of the very high-impedance capsule to the measurement equipment. Particular attention is given to...

Preamplifiers Preamplifiers. IEPE (ICP ® - Microdot, SMB, BNC) Capsule polarisation voltage Power consumption / mA Amplification / dB, at 1 kHz Frequency Range / (Hz … kHz) Max. Output voltage / Veff at 1 kHz and RL = 100 kΩ Operating Temperature Range / °C Heating Connector Capsule polarisation voltage Amplification / dB, at 1 kHz Frequency Range / (Hz … kHz) Max. Output voltage / Veff at 1 kHz and RL = 100 kΩ Operating Temperature Range / °C for a different Capsule amplifier combination - see data sheet note: These measurement preamplifiers reduce the respective maximum level ranges specified...

Complete Microphones In order to ease the search for the right combination of measurement microphone capsule and preamplifier there are factory-provided compositions of complete microphones available. The most common versions are shown here, the components are also available separately. Additionally Microtech Gefell GmbH also offers a microphone family with a fixed capsule to take account of the budget limit for multichannel measurement systems. There are complete microphones for classical/conventional LEMO connectors, current powered IEPE (ICP ® or DELTATRON ®) connectors with BNC connectors,...

Sound intensity probes SIS 90 1/2” Pair of capsules 1/2” MK 290 Preamplifier 1/4” MV 302.1 Spacer 1/2” 12 and 50 mm SIS 90 1/4” Pair of capsules 1/4” MK 390 Preamplifier 1/4” MV 302.1 Spacer 1/4” 6 and 12 mm Since the introduction of computerised measurement systems the sound intensity measurement process, for example for sound field mapping or sound power measurement, has become very significant. Microtech Gefell offers selected precision microphone pairs in this area that are integrated in different mechanical constructions. Following customer requests, the different mechanical structures are...