[. . . ] To ensure proper operation of the microphone, the two channels always have to be If no 48 V phantom powering is available at the microphone input of the subsequent device, suitable power supply units must be interconnected, e. Two MZA 14 P48 battery power supply units or one Neumann N 48 i-2 mains power supply unit (both units are fitted with a 3-pin XLR connector) or one Neumann BS 48 i-2 battery power supply unit (fitted with a 5-pin XLR connector). [. . . ] Two MZA 14 P48 battery power supply units or one Neumann N 48 i-2 mains power supply unit (both units are fitted with a 3-pin XLR connector) or one Neumann BS 48 i-2 battery power supply unit (fitted with a 5-pin XLR connector). The MZA 14 P48 battery power supply unit also allows direct connection to unbalanced inputs. This is a battery power supply, with 5-pin XLR input and output, that incorporates an MS matrix amplifier and microphone pre-amplifier. The unit enables an MS microphone to output left/right stereo and incorporates a ch-2 phase-reverse switch, bass roll-off and adjustable level and width controls. The connector of the MKH 418 S has standard pin assignment: Pin 1 = Casing/ground Pin 2 = M channel (+) Pin 3 = M channel (-) Pin 4 = S channel (+) Pin 5 = S channel (-) Accessories The following accessories are available: · Y-Cable AC 20 XLR-5F / 2 x XLR-3M, 1 m length Please order from your local Sennheiser dealer. This balancing can even be performed during re-processing without a loss of information if the original MS signals were recorded. During matrixing, it should be taken into account that the direction of off-axis sound signals can be determined less and less at high frequencies due to the increasing directivity of the shotgun microphone. This may lead to diffused spatial effects, which can be desirable or undesirable depending on the recording situation. In case of doubt, the proportion of the S signal should not be chosen too high. In some cases, it might be necessary to reduce the treble in the S channel on the mixing console. At low frequencies below 300 Hz, it is very difficult to locate sounds for physiological reasons. Since the S system of the microphone, due to its design principle, is more sensitive than the M system to low-frequency interference caused for example by wind, the bass in the S channel should be reduced if required (eg: with a high-pass filter). [. . . ] At low frequencies below 300 Hz, it is very difficult to locate sounds for physiological reasons. Since the S system of the microphone, due to its design principle, is more sensitive than the M system to low-frequency interference caused for example by wind, the bass in the S channel should be reduced if required (eg: with a high-pass filter). [. . . ]