Acesonic KM-112 Music Mixer User Manual

Vocal Mixer with Computer Audio Interface
User Manual
NOTE: To ensure your equipment works safely and to its fullest potential, please
read this User’s Manual carefully before operating, and keep for future reference.
Thank you for purchasing Acesonic’s KM-112
Vocal Mixer with Computer Audio Interface. At
Acesonic, we take pride in providing you with the
most advanced, highest quality products on the
market. With proper care you will get many years of
satisfying use from your Acesonic product.
• USB A-to-B cable (1)
• KM-112 Vocal Mixer and Computer Audio
Interface (1)
• RCA cable, RCA red/white/yellow both ends (1)
• Mini-jack-to-RCA cable (1)
• User Manual (1)
Table of Contents
• Warranty Registration Card (1)
Parts Checklist.....................................................1
Be sure to keep original packaging in case re-shipping
is required for returns or repairs.
First Things First..................................................1
Care and Cleaning................................................2
First Things First
Review of KM-112 Features................................2
Before using your new equipment, there are a few
things you should do and know:
Technical Specifications.......................................3
Front Panel Operations and Functions.................3
• IMPORTANT: Check to see that your local power
outlets supply the correct voltage for the AC adapter.
Note: Be certain you have selected the correct voltage
setting on the rear panel switch before using device.
(See “Rear Panel Operations and Functions” on page 4
and refer to item number 5.)
Rear Panel Operations and Functions..................4
Recording and Playback with Computer..............4
Cable Connections and Setup..............................5
FCC Advisory and Safety Warnings....................7
• Do not dismantle the device on your own. For
needed repairs, contact the local distributor or authorized service center.
Using Your KM-112 Safely..................................7
Parts Checklist
• When the system will not be used for a long time,
disconnect the power plug from the wall (as well as
the back of the receiver).
Your Acesonic KM-112 system includes:
• Acesonic HM-702 mic with 14-ft. cable (1)
Care and Cleaning
singers using the 1/4-inch microphone style jacks
on the front panel.
Please make sure the power is disconnected before
cleaning the KM-112 unit. It, as well as the microphone, can be cleaned by using a soft cloth dampened with warm water. Dry the machine with a dry
cloth and let it air dry for 15 minutes. Please do not
use volatile gasoline or other chemicals to clean the
receiver or microphone.
3. Two XLR microphone inputs on rear. You can use
two XLR inputs to plug in mics, guitars, etc.
4. 3D sound processor. Advance digital sound enhancement technology improves the full range of
audio frequencies to fine-tune the sound of your
musical output. It enables users to enjoy a more
natural and comfortable sound.
Avoid Moisture, Water and Dust
5. Microphone treble and bass control. You can
adjust the level of high and low frequencies to the
microphone channels.
• Do not place the mixer in a moist environment
or in an area where there might be an excessive
amount of dust build up (e.g., near a fan).
6. Microphone echo control. You can adjust the
digital echo effect applied to the microphone
• If water or any liquid should get into the unit, turn
off the power and unplug the unit from the wall
outlet immediately. Consult your dealer or an authorized repair station. Using the unit in this state
may lead to fire or electrical shock.
7. Individual microphone volume control. Adjust
each microphone volume individually.
8. Multiplex. With Multiplex karaoke media, lead
vocals and music are recorded in separate left and
right stereo channels. You can select channels
with the Multiplex switch on the front panel to
cancel the guide vocals.
Avoid High Temperatures
• Do not expose the KM-112 to direct sunlight or
set near any heating device.
Notes on Installation
9. Audio line in. The audio line in is for connecting the sound output of a computer, MP3 player,
MP4 player or DVD player to the KM-112 for
audio output.
• Select a place where the unit will be level, dry and
neither too cold nor hot.
• Do not use unit on its side or where it will be subject to vibrations (e.g., near speakers).
10. USB audio in and out. The USB port is for connecting the KM-112 to a computer via USB port
for both audio in and out. See page 4, “Recording
and Playback with Computer” for more information
on using USB.
• Leave sufficient distance between the TV and unit.
• Do not leave heavy objects on top of unit.
Preventing Malfunctions of the Unit
• No parts in this unit are user-serviceable. If the
unit no longer functions, unplug the unit from
the wall outlet and contact your dealer for service
11. One audio line out. This output is for connecting
the KM-112 to the input of an amplifier, receiver
or TV audio input.
12. Mini-jack audio out. This front panel jack can be
used to plug into your headphones or speakers for
listening or monitoring while recording through
the USB interface.
• Never block the vents on the unit. Vents are used
to circulate air and keep the temperature of the
device down. Blocking the vents may result in
damage of the unit.
Review of KM-112 Features
Please see pages 7-8 for complete safety instructions and
FCC advisories regarding the KM-112.
1. Transform any DVD/MP3 player or PC into a
karaoke machine. Add vocals to any music source
for karaoke entertainment. Use USB cable to
connect to your PC to become a karaoke/media
center and computer audio interface for recording
and playback.
2. Two 1/4” microphone inputs. Have up to two
Front Panel Operation and Functions
6. Microphone tone and echo controls: Use the
bass and treble tone controls to adjust the tone of
both microphone channels at once. Use the echo
control to adjust the level of the echo effect in
relation to the volume of the microphone(s).
1. Power switch: Use this to turn the main power
on and off. Note: Always turn off the main power
and set all volume controls to zero before making
any audio connections.
7. Music volume control: Use this control to adjust
the playback volume of the music. Note: This
control does not adjust volume of the microphones or effects.
2. Front panel microphone inputs: Use these 1/4inch jack type microphone input connectors to
connect microphones to Microphone Channels 1
and 2 via the front panel.
8. Multiplex switch: Choose L, R or Stereo with
this switch. This allows you to cancel the channel
with the guide vocals.
3. Individual microphone volume controls: Use
these to set the volume of each microphone in
relation to the other microphones.
9. Computer/audio button: Use this button to select
whether you want to use the KM-112 as an audio
mixer (Audio) or as a USB interface (USB) to
record vocals on your Windows computer.
4. Headphone/alternate speaker output: Plug in
your headphones or alternate (powered) speakers
5. Headphone volume control: Control the volume
of the headphones or alternate speakers here.
10. 3D sound processor button: Use this to turn the
3D sound enhancer on/off.
9 10
Technical Specifications
• Size: 11.5 (L) x 7.75 (W) x 1.75 (H) in inches,
• (2) XLR audio inputs (balanced, rear)
• PC to KM-112 USB connection
• RCA audio outputs (2, rear)
• RCA audio inputs (2, rear)
• 3.2 lbs. net weight
• Mini-jack audio out (1, front)
• KM-112 has an integrated C-Media CM106
Audio I/O Controller
• Voltage: Switchable 115~230V (rear)
• (2) 1/4-inch audio inputs (unbalanced, front)
• Adheres to FCC regulations (see page 7)
Rear Panel Operation and Functions
nect KM-112 to your computer for audio in and out.
Please use the USB cable that comes with your KM112 and connect it first. The driver of KM-112 will
automatically install into your Windows computer.
After installing the driver, please restart your computer to activate the driver (Windows) and register the
device with Device Manager to use both the mixer
and the USB interface functions .
1. XLR balanced inputs: With these inputs you can
connect a balanced microphone, the output jack of a
wireless microphone or an electric guitar with balanced output.
2. Audio out: Connect this RCA type line level output to the input of an amplifier or powered (active)
speaker system.
5. Voltage switch: Select the power supply voltage for
the KM-112 according to your local power supply
(115V-230V). Default settings are 115V for USA and
Canada, 230V for Europe.
3. Audio line input: Line level audio input using RCA
type connectors. This can accept a signal from any line
level audio device, such as DVD, CD, MD, PC, MP3/
MP4 players, etc.
6. Power cable connector: Use this to connect the
power cord to supply AC power to the unit.
4. USB cable connection: Use this USB cable to con-
Recording and Playback with Computer
whether the KM-112 will function as an Audio
device (mixer) and work with the audio in signals
(see rear panel information above), or work as a computer interface, allowing you to record your vocals
through the USB connection to your Windows
• On your Windows PC, the driver automatically
installs when you connect and power up the device.
Note: Restart your computer to activate the driver.
• Windows will manage the device through the
Device Manager utility for setting recording and
playback levels and functionality. The KM-112 is a
“USB Multimedia Device,” allowing you to select
the device and control input and output levels for
recording and playback.
• If you have computer files that have had vocal
tracks removed, or came without vocals, you can
record your own vocals and overdub the instrumental tracks. Commercial and shareware/freeware
multitrack recording software will allow you to record and save tracks in various digital file formats.
• There is a front panel switch (see page, “Front Panel
Operation and Functions,” item number 9) to choose
Cable Connections and Setup
For DVD Players and
Similar Devices with
For DVD Players and
Similar Devices with
Mini-jack Audio Out
Cable Connections and Setup continued
For Computers and
Digital Devices with
USB Ports
If you are having problems operating the KM-112 unit, or suspect something is wrong with it, 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 the Acesonic service center at (626) 820-0645 or send an
e-mail to
Possible Cause(s)
• AC adapter not plugged in
• Plug in AC adapter
• Bad connection on rear panel
• Check rear panel connections
• USB cable not connected
• Connect USB cable properly
• Microphone settings incorrect
• Check microphone settings
• Driver not installed
• See page 4 for instructions
• Microphone power intermittent
• Check microphone
• Windows system conflicts
• Check your Device Manager
(No sound or lights)
Computer audio
(No sound, not recognized)
FCC Advisory and Safety Warnings
• If necessary, consulting the dealer or an experienced radio/TV technician for help
Mises en garde, precautions et procedures de sûreté
2. IMPORTANT: When connecting the KM-112
to audio equipment, use only high-quality, shielded
cables such as what is supplied with this product.
Follow all installation instructions and do not modify
the equipment in any way, as this could void your
FCC authorization to use the device in the U.S.
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.
Caution: To prevent electric shock, match the wide
blade of the plug to the wide slot, and fully insert.
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.
The exclamation point within a triangle
alerts the user to important operating,
maintenance, and servicing information in
this User Manual.
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).
To reduce the risk of electrical shocks, fire and
possible injuries, you should not
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).
• remove screws, buttons, antennae, jacks or any part
of the enclosure; or
• expose the product to rain or moisture.
Using Your KM-112 Safely
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.
1. Read and follow these instructions, keep them
handy for reference, familiarize yourself with the
product’s operation and heed all safety warnings.
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:
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.
3. Do not block any ventilation openings or set device
on carpets or rugs. Maintain sufficient room on all
sides for airflow.
4. Do not position the device on or near radiators,
stoves or other electrical equipment (such as
amplifiers) that produce heat.
• Reorienting and/or relocating the receiving antennae
• Increasing the distance between the radio/TV
equipment and the KM-112
• 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.
result in fire, electric shock or other hazards.
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.
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.
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
7. Only use the attachments and accessories specified
by the manufacturer.
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.
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.
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 KM-112 Vocal Mixer with Computer Audio
Interface will give you years of dependable, enjoyable
use. Make sure you are connecting the device properly
to your computer and other audio devices, using good
(unfrayed, unbent) 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.
Vocal Mixer with Computer Audio Interface
One (1) Year Manufacturer Warranty
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.
Lifetime Technical Support
Designed in U.S.A.
Technical Support: (626) 820-0645
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.
Web site:
Acesonic USA, Inc.
161 S. 8th Avenue
City of Industry
CA 91746-3208
14. Do not overload wall outlets or extension cord
as this can increase the risk of fire, power outages or
electrical shock.
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
© 2010 Acesonic USA, Inc. • All rights reserved