XY configuration coincident pair is a good way to make stereo recordings, particularly of choirs. However, sound source locations are defined only by intensity differences. Adjusting the angle between the microphones determines the width and depth of the stereo image. ORTF stereo recording Developed by the French Broadcasting Authority, this technique differs from the XY technique by recording not only intensity differences, but also delay differences. The capsules are aligned at an angle of precisely 110° and 170 mm 6.7 in. apart. AKG CHM21 Features Cardioid polar pattern 10 m 33 ft. cable 125° pickup angle Especially suited for choir recordings Integrated spring steel clamp for optimum alignment AKG CHM21 Specifications Polar pattern Cardioid Frequency range 70 to 18,000 Hz Sensitivity 18 mVPA 35 dBV re 1 VPa Max. SPL 125 dB for 1 THD Equivalent noise level Signalnoise ratio A weighted 73 dB Impedance Recommended load impedance 2,000 ohms Supply voltage 9 to 52 V phantom power to DIN 45596 DPA adapter integrated Current consumption Connector 3 pin male XLR Finish matte dark grey Net weight 20 g 0.7 in. Shipping weight 480 g 17 oz. The microphone shall be a cardioid microphone for flown use with a non twisting cable. Its pickup angle shall be 125 degrees; frequency range 70 Hz to 18 kHz; sensitivity 18 mVPa; max. SPL 125 dB; electrical impedance The microphone shall be finished in matte dark gray and fitted with a 10 m cable. It shall measure approx. 13.5 x 55 mm and its net weight shall be 20 grams, its shipping weight 480 grams. Get your AKG CHM21 today!
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