Instruction Manual

Model SCU250
Professional Boundary
Microphone
DESCRIPTION
The SCU250 is an unobtrusive, uni-directional, surface-mount microphone
ideal for meeting rooms, conferences, and stage productions where minimum
visibility is ideal. The SCU250 provides full, rich reproduction of voice and
music and is well-suited in capturing the sound source and the immediate sur-
roundings. It has a low sensitivity to stage vibration and thumping noise and
has excellent user sound isolation feedback rejection.The SCU250 has a low-
impedance balanced output.The SCU250 features a heavy copper case with a
non-glare matte black finish, mounting keyways on bottom for hanging or for
attachment to the mounting surface, and a cardioid pickup pattern.The micro-
phone requires an external 9V - 52V DC phantom power supply and is ter-
minated by a standard male XLR with a built-in pre-amplifier.
SPECIFICATIONS
MIC Type: Boundary
Element: Back Electret condenser
Polar Pattern: Uni-directional
Impedance: 250-ohm
Frequency Response: 20 Hz to 18 kHz
Sensitivity*: -58 dB +/- 3 dB
Max SPL @ 1% THD: >130 dB
S/N Ratio: >65 dB
Cable: 26 ft.
Dimensions: 2
3
/4" W x
3
/4" H x 3
1
/4" D
Product Weight: 1 lb.
Material: Zinc die cast
Finish: Matte black finish
* (0dB=1V/microbar 1,000 Hz indicated by open circuit)
-50
-60
dB
-70
-80
-90
-100
20 1K Hz200 2K 20K
Frequency Response, Magn dB re 1 V/microbar
= 0
o
on axis
= 180
o
off axis
-40
0˚
180˚
330˚ 30˚
60˚
300˚
90˚
270˚
240˚
210˚
120˚
150˚
FREQUENCY RESPONSE GRAPH
POLAR GRAPH