Shure Microflex MX400D Serie Gebrauchsanleitung

GENERAL
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Shure Microflex MX400D Series microphones are miniature
electret condenser gooseneck microphones with a desktop base
and attached 3 m (approximate)/10 ft cable. The desktop base
allows these microphones to be used in multi-purpose rooms
where quick set-up is required, or where permanent installation
is impractical.
FEATURES
•
Wide dynamic range and frequency response for accurate
sound reproduction across the audio spectrum
•
Interchangeable cartridges provide the right polar pattern
for any application
•
Balanced, transformerless output for increased immunity
to noise over long cable runs
•
Programmable on/off switch and LED on/off indicator
•
New brighter LED improves visibility under strong ambient
lighting
•
Logic input and output terminals for remote control or use
with automatic microphone mixers
•
Snap-fit foam windscreen
MODEL VARIATIONS
MX412D: 304.8 mm (12 in.) desktop mini-condenser, goose-
neck-mounted microphone.
MX418D: 457.2 mm (18 in.) desktop mini-condenser, goose-
neck-mounted microphone.
SELECTING A POLAR PATTERN
All Microflex microphones are available with any one of three in-
terchangeable cartridges. The polar pattern of the cartridge is in-
dicated by the model number suffix:
/C = Cardioid, /S = Supercardioid, /O= Omnidirectional
Cardioid (C). Recommended for general sound reinforcement ap-
plications. Pickup angle (-3 dB) = 130°.
Supercardioid (S). Recommended for sound reinforcement appli-
cations requiring narrower or more distant coverage. Pickup angle
(-3 dB) = 115°.
Omnidirectional (O). Recommended for recording or remote
monitoring applications. Pickup angle = 360°.
ã2003, Shure Incorporated
27F2831 (Rev. 5)
Microflex
Desktop Microphones User Guide
GENERAL INSTALLATION GUIDELINES
1. Aim the microphone toward the desired sound source,
such as the talker, and away from any unwanted sound
source, such as a loudspeaker.
2. Place the microphone cartridge within 15 to 30 cm (6 to
12 in.) of the desired sound source.
3. Always use the supplied windscreen or the optional met-
al windscreen to control breath noise.
4. If four or more microphones will be on at the same time,
use of an automatic mixer, such as the Shure SCM810
or FP410, is recommended to minimize feedback and
noise.
MICROPHONE INSTALLATION
Securing a Microphone to a Mounting Surface (Figure 1
on page 11)
1. Install two No. 6 wood screws, 50.8 mm (2 in.) apart, on
the mounting surface.
2. Place the key holes over the screw heads and push the
microphone into position. Adjust the height of the screws
as necessary to secure the microphone.
Installing the Foam Windscreen (Figure 2 on page 11)
1. Press the foam windscreen onto the microphone until it
snaps into the groove located below the cartridge.
2. To remove the windscreen, spread the slot in its mount-
ing ring with a screwdriver or thumbnail and pull the
windscreen off carefully.
INTERNAL DIP SWITCH FUNCTIONS
All MX400D models have internal DIP switches that allow the user
to program the On/Off switch for a variety of applications. To gain
access to the DIP switches, remove the bottom plate.
LOGIC TERMINAL DEFINITIONS
LOGIC GND Terminal: Connects to the logic ground of an auto-
matic mixer, switcher, or other equipment. Can be modified to pre-
vent ground loops. Refer to the Logic Modifications paragraph.
SWITCH OUT Terminal: Provides a TTL logic low (0 Vdc) when
the membrane switch is pressed. Provides TTL logic high (5 Vdc)
otherwise. This signal is available at all times for all switch set-
tings. The Switch Out function provides momentary closure when
S1 is Off and latching closure when it is On.
LOGIC MODIFICATIONS
Isolating Logic Ground from Audio Ground (Figure 6 on
page 12)
1. Remove jumper R40 from the top of the circuit board.
2. Make sure LOGIC GND terminal connects to the logic
ground of the automatic mixer, switcher, or other equip-
ment.
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MX400D Series
Printed in U.S.A.