User manual NADY CM 90

[. . . ] NADY CM SERIES USER GUIDE CM 90 Studio Condenser Microphones Congratulations on purchasing the Nady CM 90 classic small-diaphragm condenser microphone. This superior microphone is perfect for recording and stage reinforcement of acoustic guitar, drum overheads, hi-hats, snares, piano and horns. [. . . ] The CM 90 uses a carefully selected Field Effect Transistor (FET), specially chosen for its low distortion and superior signal-to-noise ratio. (Note: For optimum performance, it is best to let the microphone warm up for 5 to 10 minutes) The CM 90 is manufactured with the finest materials and features a machined housing with advanced internal shock mount construction for the highest structural integrity and rugged reliability. It requires 48V phantom power to operate, typically supplied by the microphone pre-amplifier or mixing console. The optional Nady SMPS-1 phantom power supply can also be used. WARNING The capsule is the heart of the condenser microphone. If it becomes dirty or wet, the sound will be degraded. Never spray any liquid on the microphone head. Always use a foam windscreen if you talk or sing close to the microphone grill screen. USING THE FOAM WINDSCREEN The CM 90 is supplied with a foam windscreen (FW-1/90). This windscreen fits over the grill portion of the microphone and is designed primarily to decrease bass rumble (from wind noise pickup) during outdoor live or recording use. It is also useful in keeping mouth spray out of the microphone head. The FW-1 or other windscreen should be used whenever someone is close miked to both protect the microphone and to also eliminate "popping" sounds from percussive breath sounds. (Note: Be aware that the foam windscreen will slightly attenuate the high frequency response of the microphone. CONNECTING THE CM 90 The CM 90 can be used in live sound reinforcement and broadcasting and in studio or live recording. It must be powered by 48V phantom power (such as supplied by the optional Nady SMPS-1 phantom power supply or a mixing console with phantom powering), and amplified by a microphone pre-amp (such as built into a mixer, or a stand-alone unit). (Note: Make sure to set the pre-amp to the proper gain level--too much gain may distort subsequent amplifiers and too little may result in a noisy signal) The CM 90 can be connected to your mixer or phantom power supply using a standard balanced 3-pin XLR microphone cable. Before connecting to a mixer directly, turn the channel to which you're connecting to its lowest gain setting. [. . . ] SPL (1% THD @1000Hz): Equivalent noise level to DIN 45405(CCIR 468-2): Max. SPL (1% THD @1000Hz): Power requirement: Equivalent noise level to DIN 45405(CCIR 468-2): True condenser pressure-gradient microphone with 0. 79 inch(20mm) diaphragm and FET Cardioid 14mV/Pa=-37dBV (0dBV=1V/Pa) 40 to 16000Hz < 200 Ohms 1000 Ohms 131dB 28DB 131dB +48VDC phantom power 28DB IEC 268-4(A weighted): S/N ratio re 1Pa: Current consumption: Ambient temperature range: Relative humidity range: Connector: Phasing: Mic cable: Size: Net weight: 19dB-A 75dB <3mA 14°F to 140°F (-10°C to +60°C) 90% (68°F, 20°C), 85% (140°F, 60°C) 3-pin XLR (gold plated) Positive voltage on pin 2 relative to pin 3 3-pin XLR standard cable (not supplied) Diameter: 0. 9" (22mm), Length: 5. 1" (130mm) 5oz (130g) Specifications and design subject to change for improvement purposes 08/15/01 [. . . ]