Senal Professional MX Series User manual

Table of Contents:
Introduction .............................2
Precautions ..............................3
Overview ................................. 4
Instructions..........................5-7
Specifications.....................8-9
Troubleshooting ...................10
Charts .......................................11
Warranty .................................12
USER’S GUIDE
MXBM-621

2
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Introduction
Thank you for choosing Senal.
Senal’s MX-series Professional Boundary Microphones are sleek, low-profile microphones
that are designed with optimized frequency response and sensitivity for capturing voices.
Both omnidirectional and cardioid models are perfect for video conferences, lectures,
and meetings.
The MX-series microphones integrate into most AV conferencing systems or sound
systems. Balanced output minimizes unwanted RF interference and noise, even over
long cable runs, and a high-pass filter minimizes room noise and low-end rumble.
The microphones’ low-profile design offers an inconspicuous appearance and an
unobstructed view. Rugged metal housing protects the mic capsule, and the nonskid
padding keeps the microphone stable on a tabletop or lectern.

3
Precautions
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Precautions
• Please read and follow these instructions, and keep this manual in a safe place.
• Keep this product away from water and any flammable gases or liquids.
• Do not attempt to disassemble or repair this product.
• Handle this product with care.
• Clean this product with only a soft, dry cloth.
• Make sure that this product is intact and that there are no missing parts.
• All images are for illustrative purposes only.

4
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Overview
MUTE
LED
MXBM-621/C
-FLAT
-LO CUT
Overview
Indicator LED
On = Mic on
Off = Mute High-pass filter switch
Up = Flat
Down = Low Cut
Sound pickup
panel
Mute button

5
Instructions
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Setting Up
To set up your room with omnidirectional or cardioid MX
microphones, refer to the illustrations below.
Cardioid Polar Pattern
The MXBM-621/C rejects off-axis noise. Use it in rooms with
inadequate acoustic treatment or in spaces where background
noise is problematic. The MXBM-621/C will capture the voice of the
person sitting directly in front of it while it minimizes room noise
and reverberation.
Omnidirectional Polar Pattern
The MXBM-621/O microphone picks up sound in a 360-degree
pattern. Use it in quiet rooms with adequate acoustic treatment.
Microphones set in the center of the table will pick up all
participants seated around it.
MUTE
LED
CXBM-620
MUTE
LED
CXBM-620
MUTE
LED
CXBM-620
MUTE
LED
CXBM-620
MUTE
LED
CXBM-620

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Instructions
Using the MX Boundary Microphone
Each application of the MX Boundary Microphone will be slightly different. The
following scenarios cover frequently used setups.
Live Lecture/Sound Reinforcement
Ideal in an auditorium or house of
worship where a voice needs to be
amplified for an audience.
Note: MX-series microphones
need phantom power in order to
operate.
Video and Audio Conferencing
MX-series microphones are
compatible with most audio and
video conferencing systems. Refer
to the conferencing system’s user
manual for setup instructions.
MUTE
LED
MXBM-621/C
Remote video conference
system conference Power amplifier
MUTE
LED
MXBM-621/C
Mixing console
Power amplifier
MUTE
LED
MXBM-621/C
Phantom power supply Power amplifier

7
Instructions
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Powering the MX Microphone
The MX-series microphones operate on phantom power. Once connected to the power
source, the MX Boundary Mic is ready to work.
Important! When integrating the MX Moundary Mic into a video or audio conferencing
system, or using it with a mixing board, make sure that phantom power is enabled.
High-Pass Filter
Activate the high-pass filter when using the microphone in rooms with inadequate
acoustic treatment or constant noise from air conditioning, fans, or lights.
To filter out low frequencies, use the tip of a pen or a similar pointed object to switch the
high-pass filter to the on position.
Muting
MX-series microphones are equipped with CapSense® mute buttons. To mute the
microphone while in use, gently tap the mute button. The indicator LED will turn off to
show that the microphone has been muted.
Touch the mute button again to resume operation.

8
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Specications
MXBM-621/C MXBM-621/O
Transducer Condenser Condenser
Polar pattern Cardioid Omnidirectional
Frequency response 30 Hz–20 kHz 60 Hz–16 kHz
Maximum input level 120 dB (THD ≤1.5% @ 1 kHz) 120 dB (THD ≤1.5% @ 1 kHz)
Sensitivity -32 dB ±3 dB (0 dB = 1 V/Pa @ 1 kHz) -33 dB ±3 dB (0 dB = 1 V/Pa @ 1 kHz)
High-pass lter 60–200 Hz, 10 dB ±2 dB 80 Hz (6 dB octave attenuation)
Impedance 330 Ω ±30% @ 1 kHz 440 Ω ±30% @ 1 kHz
Operating voltage 9–52 V DC, 4 mA typical 9–52 V DC, 4 mA typical
Output connector TA3 male TA3 male
Mute switch CapSense
®
touch switch CapSense
®
touch switch
Housing material Metal Metal
Dimensions (L × W × H) 4 × 2.9 × 1 in. (10 × 7.3 × 2.4 cm) 4 × 2.9 × 1 in. (10 × 7.3 × 2.4 cm)
Specifications

9
Specications
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MXBM-621/C MXBM-621/O
Weight 7.4 oz. (210 g) 7.4 oz. (210 g)
Cable length 25 ft. (7.6 m) 25 ft. (7.6 m)
Cable connectors TA3 female, XLR male TA3 female, XLR male

10
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Troubleshooting
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Specications
Problem Solution
The microphone
is connected, but
there’s no sound.
• Make sure that both XLR connectors on the cable are fully inserted into the
plugs on the microphone and input device (conferencing system or
mixing board).
• Make sure you are connected to an XLR port with phantom power, and that
the phantom power is turned on.
• If the indicator LED is off, touch the mute button to unmute
the microphone.
• Refer to the user manual of your AV conferencing system to ensure that the
input settings are correct.
Troubleshooting

11
Charts
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Specications
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Frequency Response Graph - Cardiod
Frequency Response Graph - Omni
Cardiod Polar Pattern
Omni Polar Pattern
-20
Relative Response in dB
-30
-40
-50
-60
20 50 100 200 500 1K 2K 5K 10K 20K
Frequency in Hertz
0° 30°
60°
90°
120°
150°
180°
210°
240°
270°
300°
330°
0° 30°
60°
90°
120°
150°
180°
210°
240°
270°
300°
330°
-20
Relative Response in dB
-30
-40
-50
-60
20 50 100 200 500 1K 2K 5K 10K 20K
Frequency in Hertz

GG2
Two-Year Limited Warranty
This Senal product is warranted to the original purchaser to be free from defects in materials and workmanship
under normal consumer use for a period of two (2) years from the original purchase date or thirty (30) days
after replacement, whichever occurs later. The warranty provider’s responsibility with respect to this limited
warranty shall be limited solely to repair or replacement, at the provider’s discretion, of any product that fails
during normal use of this product in its intended manner and in its intended environment. Inoperability of the
product or part(s) shall be determined by the warranty provider. If the product has been discontinued, the
warranty provider reserves the right to replace it with a model of equivalent quality and function.
This warranty does not cover damage or defect caused by misuse, neglect, accident, alteration, abuse,
improper installation or maintenance. EXCEPT AS PROVIDED HEREIN, THE WARRANTY PROVIDER MAKES
NEITHER ANY EXPRESS WARRANTIES NOR ANY IMPLIED WARRANTIES, INCLUDING BUT NOT LIMITED
TO ANY IMPLIED WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. This
warranty provides you with specific legal rights, and you may also have additional rights that vary from state
to state.
To obtain warranty coverage, contact the Senal Customer Service Department to obtain a return merchandise
authorization (“RMA”) number, and return the defective product to Senal along with the RMA number and
proof of purchase. Shipment of the defective product is at the purchaser’s own risk and expense.
For more information or to arrange service, visit www.senalsound.com or call Customer Service at 212-594-2353.
Product warranty provided by the Gradus Group.
www.gradusgroup.com
Senal is a registered trademark of the Gradus Group. © 2017 Gradus Group LLC. All Rights Reserved.