INSTRUCTION MANUAL
DYNAMIC MICROPHONES
FLExIbLE SHAFT
DM-524b
DM-524S
YM-121
Thank you for purchasing TOA’s products.
Please carefully follow the instructions in this manual to
ensure long, trouble-free use of your equipment.
1. SAFETY PRECAUTIONS
• Before installation or use, be sure to carefully read all the
instructions in this section for correct and safe operation.
• Be sure to follow all the precautionary instructions in
this section, which contain important warnings and/
or cautions regarding safety.
• After reading, keep this manual handy for future reference.
When Installing the Unit
• (When attached to the ST-73A) Avoid installing or
mounting the unit in unstable locations, such as on
a rickety table or a slanted surface. Doing so may
result in the unit falling down and causing personal
injury and/or property damage.
• Do not lay the connection cable where it can be
walked on or tripped over, causing personal injury.
Indicates a potentially hazardous situation which,
if mishandled, could result in moderate or minor
personal injury, and/or property damage.
CAUTION
Model No.
YM-121
Type
Flexible shaft
Input Connector
XLR-3-11C or equivalent
Output Connector
ø21, 3-pin plug (BTS21P3B)
Finish
Gold, sparkling paint
Size
367 mm (length)
Weight
295 g
Model No.
DM-524B
DM-524S
Type
Moving coil microphone
Polar Pattern
Cardioid pattern
Rated Impedance
600 Ω, balanced
Rated Sensitivity
–54.5 dB (1 kHz, 0 dB = 1 V/Pa)
Frequency Range
100 Hz to 10 kHz
Output Connector
ø21, 3-pin plug (BTS21P3B)
Switching circuit
Short-off type
Finish
Microphone body, gooseneck shaft:
Gold, sparkling paint
Size
ø40 x 532 mm
(length)
ø40 x 557 mm
(length)
Weight
465 g
475 g
Accessories
ø21, 3-pin receptacle (BTS21R3A) ... 1
Machine screw M3 x 10 .............. 3
Plain washer (for M3) ................... 3
Spring washer (for M3) ................ 3
Nut (for M3) ................................. 3
Note
The design and specifications are subject to change
without notice for improvement.
4. SPECIFICATIONS
3. FEATURES
2. HANDLING PRECAUTIONS
• When using the DM-524B or DM-524S, do not grasp the
head of microphone or microphone element section in
order to avoid acoustic feedback.
• Avoid installing the unit in humid or dusty locations, in
locations exposed to the direct sunlight, near the heaters,
or in locations generating sooty smoke or steam as doing
otherwise may result in unit failure.
• Take care not to drop the unit onto the floor nor bump it
against a hard object as the unit could fail.
• To clean, be sure to first disconnect the connection
cable, then wipe with a dry cloth. When the unit gets very
dirty, use a cloth damped in a neutral cleanser. Never
use benzene, thinner, alcohol, or chemically-treated
cleaning cloth because such volatile liquids could deform
or discolor the unit.
• (When attached to the ST-73A) Do not pick up the
microphone stand by the microphone, as this could lead
to failure.
[DM-524B, DM-524S] [YM-121]
[ST-73A]
(Option)
• The Dynamic Microphones DM-524B and DM-524S are
characterized to eliminate handling noise as minimum.
• Use of an optional ST-73A Microphone Stand allows
the DM-524B, DM-524S, or YM-121 to be placed on a
speech desk or table in a conference room.
• Optional product
Microphone stand: ST-73A
