User manual AKG C 4000 B

[. . . ] This large-diaphragm condenser microphone has been designed on the basis of experience AKG and its customers have gained worldwide over the last decades using models such as the C 12, C 414B, and C 3000. The C 4000B uses advanced, reliable components to meet the highest professional demands and withstand even long-time, tough handling in the studio. The C 4000B provides the following features: The dual-diaphragm transducer is a proven design that provides different selectable polar patterns. [. . . ] A recessed switch on the microphone body allows you to select three different polar patterns for a wide range of recording situations. Each of these polar patterns is virtually frequency independent so that reflected sound, too will be reproduced accurately and uncolored. If you need to mic up closely spaced instruments separately, you want higher channel separation. therefore , set the polar pattern selector to the right-hand position for the hypercardioid polar pattern. This pattern is a very good choice for concert sound applications because it rejects most of the regenerated signals arriving at the microphone from the monitor loudspeakers that are usually placed a little to the sides of the artist. Set the polar pattern selector to omnidirectional (left-hand position) for "all around the mic" recording, high quality ambience (audience sound) miking, or far-field recording in exceptionally good large or small recording rooms, etc. Although the microphone capsule is shock mounted internally, you can use the supplied H 100 "spider" suspension to reduce vibrational noise from the stand or other sources even further. Remember to insert the cable into one of the two grooves at the rear end of the outer ring for strain relief. This removes mechanical pull from the connector and reduces vibrational noise that may be transmitted to the microphone by the cable. You can use the supplied W 4000 foam windscreen both as a windscreen for outdoor recording and as an additional pop screen for vocal recording. the wind/pop screen causes almost no change in the frequency response of the microphone. A careful, subjective comparative listening test will be the best way to decide whether to use the windscreen or not. The C 4000B operates on any phantom power source to DIN 45 596 / IEC 268-15. This standard specifies a positive voltage of 12, 24, or 48 VDC on the two audio lines referenced to the cable shield. [. . . ] B 18 MK 9/10 N 62 E N 66 E PF 100 ST 102 A ST 200 battery power supply 10-m audio cable with 3-pin XLR connectors AC power supply for two microphones AC power supply for six microphones studio pop filter floor stand heavy floor stand In order to preserve symmetry, use 2 x Rv resistors with a maximum tolerance of 0. Type: Polar patterns: Sensitivity at 1000 Hz: Frequency range: 1-inch dual diaphragm pressure gradient microphone omnidirectional, cardioid, hypercardioid 25 mV/Pa (-32 dBV ±2 dB) 20 to 20, 000 Hz (refer to frequency response curves) 200 ohms 1000 ohms 12 dB/octave below 100 Hz -10 dB, switchable Electrical impedance: Recommended load impedance: Bass cut filter slope: Preattenuation pad: Equivalent noise level to DIN 45 405 (CCIR 468-2): 22 dB Equivalent noise level to DIN 45 412 (A-weighted): 8 dB-A Signal/noise ratio re 1 Pa (A-weighted): 86 dB*) Max. Specifications subject to change without notice. [. . . ]