Package Contents - Sennheiser MKH 418-S Instruction Manual

Package contents

• Condenser microphone MKH 418-S
• Instruction manual
• Transport case
Stereo Condenser Microphone
MKH 4 18-S
Brief description
The MKH 418-S is an MS stereo microphone. Its high degree
of directivity makes the MKH 418-S the ideal choice for ste-
reophonic recordings for reporting, film and television appli-
cations.
The microphone is designed for 48 V phantom powering and
operates using the RF principle. This principle ensures high
operational reliability, even under extreme climatic conditions.
The MKH 418-S has two independent acoustic systems for
generating the mid and side signals. The mid signal (M) is gen-
erated by a shotgun microphone system. At high frequencies,
this results in a lobar pick-up pattern, whereas at low frequen-
cies there is a transition to a super-cardioid characteristic. The
side signal (S) is produced by a figure-of-eight capsule, whose
positive side is directed to the left. The M and S signals are
available independently at the microphone output. The micro-
phone is positioned correctly when the word „TOP" is pointing
upwards.
Powering
The MKH 418-S is designed for 48 V phantom powering. To
ensure proper operation of the microphone, the two channels
always have to be powered simultaneously, even if only the sig-
nal of one channel is required. If no 48 V phantom powering is
available at the microphone input of the subsequent device,
suitable power supply units must be interconnected.
The MKH 418-S is connected via a 5-pin XLR cable. The con-
nector 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 (-)
Notes on MS Stereo Sound Recording
The MS signal format of the MKH 418-S provides a particularly
easy means of setting the optimum balance between the main
information of the mid channel and the spatial contribution of
the side channel. This balancing can even be performed during
re-processing without a loss of information if the original MS
signals were recorded.
The MS signal format is converted into the XY format (ie: stan-
dard left/right stereo) by adding or subtracting the signals ac-
cording to the principle X = M + S, Y = M – S. The proportion