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FOR SALE: Larson Davis Precision Mics/Preamps/Cables
Selling for $800. (Originally over $3,000 complete.) Email for further info. Photo: http://www.pazul.com/images/micsystem1.jpg These mics are superb for "live" or studio recording; extremely flat response to 20K. Excellent for vocals and instruments. Shipped with calibration certificates, freq. response plots and data sheets. To hear a "live" recording using these mics, visit http://www.imaginefabfour.com/audio/demo1.mp3 (2 mics placed in "V" formation 50 feet from stage. Note good low and high response even with low bitrate MP3.) FROM THE BROCHURE The Larson Davis Model 2541 is a free-field, 1/2 inch microphone designed with high sensitivity for low level measurements. It exhibits good temperature stability, an important parameter for microphones. The Model 2541 is the appropriate microphone for use with precision sound level meters intended to meet the specifications of IEC 60651 Type 1 and ANSI S1.4-1983 Type 1. Typical Applications - Precision sound level measurements - Environmental noise monitoring - Industrial hygiene noise studies - Machinery noise control - Research and development Features - Rugged - Accurate - Wide frequency range - Flat frequency response - Stable over temperature and humidity - Meets IEC 61094-4 Type WS2F - Externally Polarized - Supplied with individual calibration data SPECIFICATIONS Nominal Diameter 1/2 inch Open Circuit Frequency Response (=B1 2 dB) 3.15 Hz to 20 kHz Open Circuit Sensitivity (250 Hz) 44.5 mV/Pa (-27 =B1 1.2 dB 1V/Pa) Lower Limiting Frequency (-3 dB) 1 Hz to 2 Hz (rear vented) Cartridge Thermal Noise 15 dB(A) Distortion Limit (3%) 146 dB 20 =B5Pa at 100 Hz Diaphragm Resonance Frequency 14 kHz (90=B0 phase-shift) Polarization Voltage 200 V Polarized Cartridge Capacitance (250 Hz) 15 pF Mean Temperature Coefficient +0.006 dB/=B0C (-10 =B0C to +50 =B0C) Equivalent Air Volume 45 mm3 Expected Long-Term Stability 1000 years/dB at 20 =B0C (68 =B0F) Influence of Vibration 62 dB 20 =B5Pa when excited with 1 m/s2 axial vibration Influence of Magnetic Field 0 dB 20 =B5Pa in 60 Hz, 80 A/m field Influence of Humidity 0.1 dB, 0% to 95% RH, non-condensing Influence of Static Pressure - 0.01 dB/kPa Diameter With Grid 13.2 mm (0.52 in) Without Grid 12.7 mm (0.50 in) Height With Grid 16.3 mm (0.64 in) Without Grid 15.5 mm (0.61 in) Thread for preamplifier mounting 11.7 mm-60 UNS (0.4606-60 UNS) |
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