Acesonic UHF-2932 Microphone User Manual

Dual Rechargeable 32-Channel
UHF Microphone System
User Manual
NOTE: To ensure this system works safely and to its fullest potential, please read
this User’s Manual carefully before operation and keep for future reference.
Parts Checklist
Thank you for purchasing Acesonic UHF-2932
Dual Rechargeable 32-Channel UHF Microphone
System. Acesonic takes pride in providing its
customers with only the most advanced and highest
quality products on the market. With proper care and
use your Acesonic product will provide you with many
years of enjoyment.
Your Acesonic UHF-2932 System includes:
• Four handheld rechargeable wireless microphones
• One UHF-2932 receiver
• Two wireless microphones
• One battery rechargeable docking station
Table of Contents
• Two 14V 800mA power adaptors
Parts Checklist.....................................................1
• Four Ni-Mh rechargeable AA batteries
First Things First .................................................2
• One 3-ft. male to male ¼-inch cable
Care and Cleaning ...............................................2
• One rack-mount kit
Receiver Description ...........................................2
• One warranty registration card
Microphone Description .....................................3
Be sure to keep original packaging in case re-shipping
is required for returns or repairs.
How to IR Sync ..................................................3
Charging the Microphones..................................3
Accessories such as batteries are not included in the
warranty coverage.
Cable Connections &
Operating the Microphone System .....................4
Features and Specifications ..................................5
Troubleshooting ..................................................6
Safety, Warnings and Cautions ............................6
First Things First
Before installing your wireless microphone, there are a
few things you should do and know:
• Do not dismantle the receiver on your own.
For needed repairs, contact your dealer
• Make sure your local power outlet supplies the
correct voltage for the AC adapter. Only use the
adapters supplied with the system.
Care and Cleaning
Make sure the power is disconnected before cleaning
the receiver unit. Use a soft cloth to clean the receiver
and microphones. DO NOT use chemicals or any
cleaning agents to clean the receiver or microphones.
• Turn off your audio system during set-up and turn
down volume.
• Fully charge your batteries before using the system.
• If you will not be using the system for an extended
period of time, disconnect all power sources. Remove
the batteries from microphones.
• Plug the power adapter cord jack into the matching
power socket on the rear of the receiver. Make sure the
power switch is OFF “0” and all four volume controls
are turned down to the negative position before
beginning any installation.
Receiver Description (Front)
1 Power switch / IR Sync
2 Channel A volume control
3 Channel A selector
4 Display panel
5 IR Sync sensor
6 Channel B selector
7 Channel B volume control
Receiver Description (Back)
1 Channel B antenna connection
2 12V AC power connection
3 Channels A & B XLR balanced audio output
4 Channels A & B 1/4” unbalanced audio output
5 Channel A antenna connection
Microphone Description
1 Microphone cartridge
2 Transmission antenna
3 Operating indicator light (Green means
power is on & working, yellow means power
is on & muted.)
4 On/Mute button
5 Battery compartment: This is the base of the
microphone where you would hold it, as well as
the device’s battery cover.
6 IR signal receiving & charging unit.
How to IR Sync
• Press the On/Mute button once on the microphone
to sync.
• Make sure microphone is On.
• Select a desired channel on the receiver.
• RF indicator bar on the LCD display should be full,
and AF bar should respond to any microphone
• Push the receiver’s power button once.
This will make the channel blink on the LCD
display panel.
Your microphone and receiver are now fully sync’ed.
• Position the bottom of the desired microphone so
it faces the IR Sync sensor.
Charging the Microphones
Inserting the rechargeable microphone batteries:
batteries firmly to make sure that they have clicked
into place. Snap the battery compartment gate shut.
Screw the battery housing cover back on.
• Grip the upper portion of the microphone with one
hand and twist the lower portion (battery housing
cover) counter-clockwise until it fully unscrews. Slide
it off and place it to the side. The battery compartment gate is now visible. With your thumb and
forefinger, go over the curved grips, pull the gate open
and out. It should pivot on its hinge at the lower end.
• Place two AA Ni-Mh rechargeable batteries into
the battery compartment spaces provided. Press the
Using the charging station:
• Plug the AC power adapter cord jack into the
matching power socket on the rear of the charging
station. Plug the AC adapter into an AC outlet.
• Stand the microphones upright into the station’s
dual base charging station. Each status LED on the
charging station will light up RED to indicate a good
connection and that the batteries are charging. Allow the batteries to charge fully before removing the
microphones from the charging station.
the wall socket and remove the power adapter from
the rear panel.
• If a microphone won’t be used for an extended
period of time or putting it in storage, remove the
batteries to prevent corrosion.
• When system is not in use, unplug the receiver from
Cable Connections & Operating the Microphone System
controls for each microphone. Check your system
set-up for Master Volume Control.
• Unpack the box. Screw the dual antennas into the
connectors on each side of the front panel of the
receiver unit. Point them both upward in a vertical
• It’s always a good idea to turn all volume controls
down after using any audio device. This will help
prevent accidental damage to speakers, headphones
and/or your ears upon the next use.
• Use the provided 1/4-inch cable to connect the
UHF-2932 receiver from the 1/4-inch Unbalanced
Audio Output to the “Mic In” on your amplifier,
mixer or player.
• For best performance, hold the microphone
horizontally and speak or sing directly into it’s top.
To avoid distortion, keep a distance of two inches
between your mouth and the microphone.
• Plug the power adapter into an AC outlet.
Press ON “1” on the power switch.
• Press the microphone’s ON/MUTE button for one
second. GREEN light indicates “ON”. YELLOW
light indicates “MUTE”. Test the microphone by
speaking into it. The corresponding AF LED on the
receiver should pulse GREEN with your voice.
Press for one second again to turn off the microphone.
• If so desired, mount the UHF-2932* receiver into
a console or rack by using the provided rack-mount
brackets. Make sure holes are aligned and screwed
with even tension.
*Two UHF-2932 receivers are needed to
fit rack-mount.
• The UHF-2932 receiver has 2 separate volume
Product Features
• Spurious rejection: 75 dB typical
• Frequency responses: 40Hz~18KHz
• UHF rack-mountable compact receiver with two
handheld microphones and individual volume
• Capable distance: Up to 200 feet
• Squelch control: Dual-squelch circuit
• AF output impedance: 2.2KΩ
• Switchable, 32 Channels
• Maximum output level: Balanced, 0-400mv;
unbalanced, 0-200mv
• Easy-to-Use IR channel switching function
• Display type: LCD
• Dual-channel LCD display with RF/AF indicators
• Power: External DC power supply, 0.5A,
12-18V DC
• High signal-to-noise ratio
• Output connectors: XLR balanced socket,
1/4-inch unbalanced socket
• Super-low distortion
• Receiver dimensions (inches): 8”(L) × 1.75”(H)
× 6”(D)
• Four rechargeable batteries for two microphones
complete with one charging station
• Receiver weight (lbs): approx. 3.3lbs
• Wide range of use: up to 200 feet under ideal
circumstances; 50 feet radius under normal
• Transmitter power: 30mW
• Spurious emission: <40dB
• Twin adjustable antennas provide clear radio
frequency reception
• Display: LED
Product Technical Specifications
• Battery life: Up to 8 hours
• Battery voltage: 1.5v × 2
Charging Station
• Carrier wave frequency range:
UHF 610-700 MHz
• Dual-well docking station
• Power: External Power Supply Output, 800mA,
14V DC
• Charging time: Up to 5 hours
• Oscillation mode: Phase-locked loop controlled
• Carrier wave stability: 10PPM
• Switching bandwidth: 24MHz
• Frequency space: ≥250KHz
• Sensitivity: -105dB @ sinad=12 dB
• S/N Ratio: >105dB
• Image rejection: 85 dB typical
If you are having technical difficulties operating the UHF-2932 system, please check the troubleshooting list
below to resolve any issues of incorrect operation. If you suspect an equipment malfunction and are unable to
resolve the problem, please contact your dealer or Acesonic USA Inc. at (626) 820-0645 or send an e-mail to
Possible causes
• AC adapter not plugged in
• Plug in AC adapter
(No sound or lights)
• Power button is in OFF position
• Press “1” on the power switch
(No sound)
• Transmitter out of range
• Microphone switched off or muted
Not Syncing
• Microphone batteries are low or
turned Off
• Bring the microphone closer to the receiver
• Press the ON/MUTE button so that the
indicator light turns GREEN
• Slowly turn up the microphone’s channel
• Channel volume is turned down
volume control
• Make sure batteries are charged and
• Batteries in the microphone are
installed/positioned correctly
weak or not installed properly
• Connect reciever to the appropriate audio
• Receiver is not connected to an
input of your amplifier or karaoke player.
amplifier, mixer or player
If you have a corded microphone, test
your amplifier/player to make sure that
it’s operating correctly.
• Make sure batteries are fully charged and
turned On
• Install antennas as instructed
• Receiver antennas not installed
• Microphone not positioned properly • Make sure bottom of microphone is facing
the IR sensor
for syncing
• Too close to speakers
• Move away from speakers
(distortion or feedback) • Microphone batteries are running low • Change batteries
• Unused microphones are on
• Turn off or turn down volume of all
unused microphones
• Other electrical interference
• Move receiver away from other devices
Safety, warnings and cautions
Mises en garde, precautions et procedures de sûreté
The exclamation point within a triangle
alerts the user to important operating,
maintenance, and servicing information in
this User Manual.
To reduce the risk of electrical shocks, fire, and
possible injuries, you should not
The lightning-with-arrowhead symbol inside
a triangle alerts the user that potentially
dangerous voltage in the product enclosure
may constitute a risk of electric shock.
• remove screws, buttons, antennae, jacks, or any part
of the enclosure; or
• expose the product to rain or moisture.
Cet appareil numerique respecte les limites de bruits
radio electriques applicables aux appareils numeriques de
Classe B prescrites dans la normesur le materiel brouilleur
(“Appareils Numeriques, NMB-003” edictee par le
Ministre des Communications).
1. This equipment has been tested and found to
comply with the limits for a Class B digital device,
pursuant to part 15 of the FCC Rules. These limits
are designed to provide reasonable protection against
harmful interference in a residential installation.
Important safety instructions
This equipment generates, uses, and can radiate radio
frequency energy and, if not installed and used in
accordance with the instructions, may cause harmful
interference to radio communications. However, there
is no guarantee that interference will not occur in a
particular installation. If this equipment does cause
harmful interference to radio or television reception,
which can be determined by turning the equipment
off and on, the user is encouraged to try correcting the
problem by one or more of the following measures:
1. Read and follow these instructions, keep them
handy for reference, familiarize yourself with the
product’s operation, and heed all safety warnings.
2. Do not use this product near water, on wet surfaces,
or in places where moisture may accumulate. Do not
expose the device to dripping or splashing, and do
not place items filled with liquids – such as vases,
beverages, etc. – on top of the device. Clean only with
a dry cloth.
• Reorienting and/or relocating the receiving
3. Do not block any ventilation openings or set device
on carpets or rugs. Maintain sufficient room on all
sides for airflow.
• Increasing the distance between the radio/TV
equipment and the UHF-2932
4. Do not position the device on or near radiators,
stoves, or other electrical equipment (such as
amplifiers) that produce heat.
• Connecting the radio/TV equipment to an outlet
on a different circuit than the one into which the
receiver is plugged
5. Do not defeat the safety purpose of a polarized or
grounding-type plug. A polarized plug has two blades
with one wider than the other, while a grounding-type
plug has two blades and one prong. The wide blade
and the prong are safety features. If the provided plug
does not fit into your outlet, consult an electrician for
replacement of the obsolete outlet.
• If necessary, consulting the dealer or an
experienced radio/TV technician for help
2. IMPORTANT: When connecting the UHF-2932
to audio equipment, use only high-quality, shielded
cables such as what is supplied with this product.
Follow all installation instructions do not modify the
equipment in any way, as this could void your FCC
authorization to use the device in the U.S.
6. Protect the power cord from being walked on or
pinched, particularly where it is plugged in to an
electrical socket and the point where it exits from the
rear of the device.
Caution: To prevent electric shock, match the wide
blade of the plug to the wide slot, and fully insert.
7. Only use the attachments and accessories specified
by the manufacturer.
Attention: Pour eviter les chocs electriques, introduire la
lame la plus large de la fiche dans la borne correspondante
de la prise et pousser jusquau fond.
8. Use only with a cart, stand, tripod, bracket or table
specified by the manufacturer or sold with the device.
When using a cart, use caution when moving the cart.
This product does not exceed the Class B limits for
radio noise emissions from digital devices as set out
in the Canadian standard for interference-causing
equipment (“Digital Apparatus, ICES-003” from the
Department of Communications).
9. Unplug the product during lightning storms or
when it will not be used for long periods of time.
10. Refer all servicing to qualified service personnel.
Servicing is required when the unit has been damaged
in any way, such as when the power-supply cord or
plug is damaged, liquids have been spilled or objects
introduced into the enclosure, the device has been
exposed to rain or moisture, the product does not
operate normally or it has been dropped.
NOTE: With the proper care and maintenance, your
UHF-2932 Dual Rechargeable 32-Channel
UHF Microphone System will give you years of
dependable, enjoyable use. Make sure you are using
freshly charged batteries and good (unfrayed) cables at
all times.
11. Never push objects of any kind into this product,
through jacks or other openings, as they may contact
dangerous voltage points or short-circuit components,
thus causing fire or electrical shock.
12. This product should be operated only from the
type of power source indicated on the product label
and in this User Manual. If you are not sure of the
type of power supplied to your home, consult your
product dealer or local utility.
13. An outside antenna system should not be located
in close proximity to overhead power lines, or other
electric light or power circuits, or where it can fall
into such power lines or circuits. When installing an
outside antenna system, be extremely careful not to
touch such power lines or circuits, as contact with
them could be fatal.
14. Do not overload wall outlets or extension cord
as this can increase the risk of fire, power outages or
electrical shock.
Dual Rechargeable 32-Channel
UHF Microphone System
15. When replacement parts are required, be sure the
service technician has used replacement parts specified
by the manufacturer or with the same characteristics
as the original part. Unauthorized substitutions may
result in fire, electric shock or other hazards.
One (1) Year Manufacturer Warranty
Lifetime Technical Support
Designed in U.S.A.
16. Following any servicing or repair of this product,
ask the service technician to perform the appropriate
safety checks to ensure the product is in proper
operating condition.
Technical Support:
Call: (626) 820-0645
17. The product should not be mounted to a wall or
ceiling except as recommended by the manufacturer,
with a mounting accessory recommended by the
Acesonic USA, Inc.
161 S. 8th Avenue
City of Industry
CA 91746-3208
18. If your product is not operating correctly or
exhibits a marked change in performance, and you
are unable to restore normal operation by following
procedures in this User Manual, do not attempt to
service it yourself. Opening the enclosure may expose
you to dangerous voltage or other hazards. Refer all
servicing to qualified service personnel.
© 2010 Acesonic USA, Inc. • All rights reserved