Bogen Microphones User Manual
Bogen Microphones
High-Quality Sound Design
High-Quality
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SCU 50
Microphones
Innovative Solutions for
Demanding Applications
Bogen’s selection of high-quality, portable microphones offer
clear, natural, intelligible sound. Engineered for accurate sound
reproduction, each microphone is ruggedly constructed to withstand the demands of sound installations. A variety of types and
styles are available including gooseneck, desktop, handheld,
wireless handheld/lavaliere, overhead hanging, and surfacemount microphones. Both contemporary and traditional
designs provide accurate response and dependable performance, with optimum clarity.
Sensitivity Patterns
Microphones pick up sound differently, based on the type of
sensitivity pattern. There are two main types of microphones
or patterns: Cardioid and Omni-Directional.
Bogen’s microphone models are crafted with professionalgrade features, including models with rubberized grips, dentproof screens, and quiet on/off glide switches. In addition,
Bogen’s handheld mics feel good in the hand and reduce resonance from taps and handling.
A variety of accessories are available for Bogen’s line of microphones - including stands, mounting clips, and cables
Cardioid
.
OmniDirectional
Cardioid (Uni-Directional)
This pickup pattern is sensitive to sound coming from one
direction - in front of the microphone - thus, it best serves a
single user. It is preferred for applications where there is likelihood of feedback, where the ambient noise is too high or
variable for a good clear signal, or where the user will be close
to the microphone. Microphones with a cardioid pickup pattern greatly reduce the chance of reproducing unwanted
sources of noise that are at the back or sides of the microphone, such as with an audience.
Dynamic vs. Electret Condenser
Microphones are transducers, or energy converters, which
sense acoustic energy (sound waves) and convert them into
electrical energy signals. There are two common methods for
microphones to do this: 1) the electromagnetic technique used
in dynamic type microphones, and 2) the electrostatic technique used in electret condenser type microphones.
Dynamic
Dynamic microphones consist of a coil of wire attached to a
diaphragm that sits in a magnetic field that is created by a
small magnet. When sound waves cause the diaphragm to
vibrate, the motion of the coil within the magnetic field creates
electrical signals that can be amplified or recorded.
These types of microphones produce a smooth, extended
response, and provide good linearity. Their output level is high
enough to work directly with most microphone inputs and have
an excellent signal-to-noise ratio. They are rugged, reliable, and
do not require batteries or external power supplies to operate.
Omni-Directional
This microphone pickup pattern is sensitive to sound from
all directions - in front, back, and on the sides of the microphone - thus, best serving a group of users. Omni-directional microphones are preferred for use in studios, offices,
round-table discussions, or other environments where there
is no ambient background noise (such as a conference
room). Microphones with an omni-directional pickup pattern
provide a smoother response than microphones with a cardioid pickup pattern.
Electret Condensers
Electret condenser microphones use a lightweight, permanentlypolarized membrane and a fixed plate to create a capacitor.
Sound waves cause the membrane to vibrate, which changes the
distance between the membrane and fixed plate causing a
change in capacitance. Using a built-in electronic pre-amplifier
circuit, the capacitance fluctuations are converted to electrical
signals that can be amplified or recorded. Because of the built-in
pre-amplifier, power must be supplied to the microphone externally. For convenience, the same shielded 2-conductor cable that
carries the audio from the microphone is used to supply the DC
voltage to the microphone’s pre-amp circuit. This method of supplying power to the microphone is called “Phantom Power”.
Electret condenser microphones respond quickly, have excellent
linearity, and are very sensitive. They respond with clarity to
transient sounds, provide a very uniform frequency response,
and have an outstanding low-frequency pickup.
HANDHELDS
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Handheld Public Address Microphone
HDO100
Delivers smooth, professional sound. Provides a custom-tailored balanced
response to complement any vocal style and timbre for singing, speech, or instrument sound reproduction. Uniform pickup of sound from all directions with no
deterioration in frequency response. Clean, clear reproduction with minimal
ambient sound. Low sensitivity to handling noise and stage vibrations. Slim design
provides optimum handling and control. Features an internal rubber shock isolation
system, a rigid low noise cable mount system, and a lockable silent on/off reed
switch. (6 -1/2" D x 1-1/2" dia., 1 lb.)
• Durable all-metal zinc case w/rubberized black finish
• Omni-directional pickup pattern
• Moving coil dynamic element
• 500-ohm impedance
• Frequency response range of 70 Hz - 15 kHz
• Sensitivity of -72 dB +/- 3 dB
Professional Handheld Stage Microphone
HDU250
Performs professionally in acoustically demanding environments. Capable of projecting vocals with remarkable clarity and power. Excellent gain before audio feedback,
reduced pickup of unwanted signals, increased frontal sensitivity, low sensitivity to
breath/pop noise, and high sound pressure capability without distortion. Features
an efficient shock-mounted Neodymium capsule that prevents handling and transmission noise, a rigid low-noise cable-mount system, a multi-layer breath/wind
filter, and a lockable silent on/off reed switch. (7" D x 2" dia., 1 lb.)
• Durable all-metal zinc case w/rubberized black finish
• Heavy, rugged reliable construction
• Cardioid pickup pattern
• Moving coil dynamic element
• 250-ohm low impedance
• Wide frequency response range
of 50 Hz - 18 kHz
• Sensitivity of -72 dB +/- 3 dB
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Handheld Stage Microphone
HDU150
Provides crisp, clear sound in any environment. Wide frequency range ensures
audio richness. Minimal audio feedback, excellent sound balance and tolerance,
reduced pickup of unwanted signals, increased frontal sensitivity, and low sensitivity
to breath/pop noise. Features a rubber shock-mount system for attenuation of
handling and cable noises, a rigid low noise cable mount system, and a lockable
silent on/off reed switch. (6 -1/2" D x 1-1/2" dia., 1 lb.)
• Heavy all-metal zinc case w/rubberized black finish
• Durable ball-shaped construction
• Cardioid pickup pattern
• Dynamic element
• 500-ohm impedance
• Frequency response range of 70 Hz - 15 kHz
• Sensitivity of -70 dB +/- 3 dB
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