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PRODUCT INFORMATION MC 840
Thank you for selecting the MC 840 condenser microphone. Please
take some time to read carefully through this product information
before setting up the equipment.
Safety Information
• Protect the microphone from moisture and sudden impacts. You
could either injure yourself or others or damage the microphone.
• Do not blow into the microphone. In a condenser microphone this
could damage the transformer. It is preferable to carry out a speech
trial.
• When using wired microphones always ensure that the microphone
cable is laid so that it does not present a trip hazard.
Application
The MC 840 studio condenser microphone has been designed without
compromise to capture every sound detail with absolute clarity and
purity. Applications for the MC 840 include recording studio and
broadcast as well as for instruments such as piano, brass woodwind
and string instruments. The superb dynamic range of the MC 840
also make it perfect for overheads on drums (both live and studio).
With the choice of 5 switched polar patterns, a 2 position roll-off filter
and a 2 position pre-attenuator this microphone can take on the most
demanding vocal or instrument applications.
Connection
The MC 840 is equipped with a 3-pin XLR-plug. It can be connected
to any microphone input with phantom power supply (11 - 52 V). For
connecting cables refer to "Optional Accessories".
Installation
The MC 840 is delivered with the MKV 11 microphone clamp and the
EA 37 elastic suspension. For stands with a 5/8"-thread, the thread
insertion piece can be unscrewed.
For fastening with the MKV 11 clamp the MC 840 is pressed
between the two elastic jaws of the clamp.
Setting up and use
The MC 840 offers 5 switchable polar patterns:
omnidirectional, wide cardioid, cardioid, hypercardioid and
figure-eight. The correct position for using the microphone is for the
sound source to be in-line with the microphone axis. This is when the
beyerdynamic )))) logo is facing to the front.
When the microphone is used for close vocal miking we recommend
using a pop shield such as the PS 740. Fix the PS 740 to the micro-
phone shaft with the clamp which will hold the PS 740 in position.
Adjust the screen to approximately 50 mm from the microphone head
which is the optimum distance for this type of use.
When the microphone is to be used outdoors, a wind shield should
be fitted. The WS 740 is designed to stop low-frequency interference
caused by turbulent wind and can be fitted on the microphone basket.
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Adjusting the polar pattern
The relevant polar pattern is adjusted by a knurled knob on the front
side of the microphone.
omnidirectional
wide cardioid
hypercardioid
figure-eight
The "R" position designates "Remote Control" which, however, is
not available and might be used for future options.
Adjusting the pre-attenuation
Without pre-attenuation (0 dB) the microphone has a maximum SPL
of 127 dB. At higher SPL pre-attenuation of 10 dB or 20 dB can be
adjusted with the knurled knob at the rear of the microphone
(indicating -10 dB or -20 dB).
Pre-attenuation
Pre-attenuation
OFF
ON
Adjusting the roll-off filter
The microphone is equipped on the rear (left hand side) with a two
stage roll-off filter switch, which attenuates the low-frequency
response at either 80 Hz or 160 Hz by 6 dB per ocatve.
cardioid
Pre-attenuation
ON
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