Acesonic KM-112 User manual

1
KM-112
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.
ank 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.
Table of Contents
Parts Checklist.....................................................1
First ings First .................................................1
Care and Cleaning ...............................................2
Review of KM-112 Features ...............................2
Technical Specications ......................................3
Front Panel Operations and Functions ................3
Rear Panel Operations and Functions .................4
Recording and Playback with Computer .............4
Cable Connections and Setup .............................5
Troubleshooting ..................................................6
FCC Advisory and Safety Warnings ...................7
Using Your KM-112 Safely .................................7
Parts Checklist
Your Acesonic KM-112 system includes:
• Acesonic HM-702 mic with 14-ft. cable (1)
• 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)
• Warranty Registration Card (1)
Be sure to keep original packaging in case re-shipping
is required for returns or repairs.
First Things First
Before using your new equipment, there are a few
things you should do and know:
• 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.)
• Do not dismantle the device on your own. For
needed repairs, contact the local distributor or autho-
rized service center.
• 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).

2
Care and Cleaning
Please make sure the power is disconnected before
cleaning the KM-112 unit. It, as well as the micro-
phone, can be cleaned by using a soft cloth damp-
ened 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.
Avoid Moisture, Water and Dust
• 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).
• If water or any liquid should get into the unit, turn
o the power and unplug the unit from the wall
outlet immediately. Consult your dealer or an au-
thorized repair station. Using the unit in this state
may lead to re or electrical shock.
Avoid High Temperatures
• Do not expose the KM-112 to direct sunlight or
set near any heating device.
Notes on Installation
• 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 sub-
ject to vibrations (e.g., near speakers).
• Leave sucient 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
options.
• 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
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
singers using the 1/4-inch microphone style jacks
on the front panel.
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 en-
hancement technology improves the full range of
audio frequencies to ne-tune the sound of your
musical output. It enables users to enjoy a more
natural and comfortable sound.
5. Microphone treble and bass control. You can
adjust the level of high and low frequencies to the
microphone channels.
6. Microphone echo control. You can adjust the
digital echo eect applied to the microphone
channels.
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.
9. Audio line in. e audio line in is for connect-
ing the sound output of a computer, MP3 player,
MP4 player or DVD player to the KM-112 for
audio output.
10. USB audio in and out. e USB port is for con-
necting 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.
11. One audio line out. is output is for connecting
the KM-112 to the input of an amplier, receiver
or TV audio input.
12. Mini-jack audio out. is front panel jack can be
used to plug into your headphones or speakers for
listening or monitoring while recording through
the USB interface.
Please see pages 7-8 for complete safety instructions and
FCC advisories regarding the KM-112.

3
Front Panel Operation and Functions
1. Power switch: Use this to turn the main power
on and o. Note: Always turn o the main power
and set all volume controls to zero before making
any audio connections.
2. Front panel microphone inputs: Use these 1/4-
inch jack type microphone input connectors to
connect microphones to Microphone Channels 1
and 2 via the front panel.
3. Individual microphone volume controls: Use
these to set the volume of each microphone in
relation to the other microphones.
4. Headphone/alternate speaker output: Plug in
your headphones or alternate (powered) speakers
here.
5. Headphone volume control: Control the volume
of the headphones or alternate speakers here.
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 eect in
relation to the volume of the microphone(s).
7. Music volume control: Use this control to adjust
the playback volume of the music. Note: is
control does not adjust volume of the micro-
phones or eects.
8. Multiplex switch: Choose L, R or Stereo with
this switch. is allows you to cancel the channel
with the guide vocals.
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.
10. 3D sound processor button: Use this to turn the
3D sound enhancer on/o.
1 2 3 4 5 6 7 8 9 10
Technical Specications
• Size: 11.5 (L) x 7.75 (W) x 1.75 (H) in inches,
• 3.2 lbs. net weight
• PC to KM-112 USB connection
• KM-112 has an integrated C-Media CM106
Audio I/O Controller
• (2) 1/4-inch audio inputs (unbalanced, front)
• (2) XLR audio inputs (balanced, rear)
• RCA audio inputs (2, rear)
• RCA audio outputs (2, rear)
• Mini-jack audio out (1, front)
• Voltage: Switchable 115~230V (rear)
• Adheres to FCC regulations (see page 7)

4
Rear Panel Operation and 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 bal-
anced output.
2. Audio out: Connect this RCA type line level out-
put to the input of an amplier or powered (active)
speaker system.
3. Audio line input: Line level audio input using RCA
type connectors. is can accept a signal from any line
level audio device, such as DVD, CD, MD, PC, MP3/
MP4 players, etc.
4. USB cable connection: Use this USB cable to con-
nect KM-112 to your computer for audio in and out.
Please use the USB cable that comes with your KM-
112 and connect it rst. e driver of KM-112 will
automatically install into your Windows computer.
After installing the driver, please restart your compu-
ter to activate the driver (Windows) and register the
device with Device Manager to use both the mixer
and the USB interface functions .
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.
6. Power cable connector: Use this to connect the
power cord to supply AC power to the unit.
1 2 3 4 6
bottom
5
top
Recording and Playback with Computer
• 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. e KM-112 is a
“USB Multimedia Device,” allowing you to select
the device and control input and output levels for
recording and playback.
• ere is a front panel switch (see page, “Front Panel
Operation and Functions,” item number 9) to choose
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 com-
puter interface, allowing you to record your vocals
through the USB connection to your Windows
computer.
• If you have computer les that have had vocal
tracks removed, or came without vocals, you can
record your own vocals and overdub the instru-
mental tracks. Commercial and shareware/freeware
multitrack recording software will allow you to re-
cord and save tracks in various digital le formats.

5
Cable Connections and Setup
For DVD Players and
Similar Devices with
RCA Out
For DVD Players and
Similar Devices with
Mini-jack Audio Out

6
Problem Possible Cause(s) Solution
Mixer • AC adapter not plugged in • Plug in AC adapter
(No sound or lights) • Bad connection on rear panel • Check rear panel connections
Computer audio • USB cable not connected • Connect USB cable properly
(No sound, not recognized) • Microphone settings incorrect • Check microphone settings
• Driver not installed • See page 4 for instructions
• Microphone power intermittent • Check microphone
• Windows system conicts • Check your Device Manager
Troubleshooting
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 [phone] or send an
e-mail to [email protected].
Cable Connections and Setup continued
For Computers and
Digital Devices with
USB Ports

7
FCC Advisory and Safety Warnings
Mises en garde, precautions et procedures de sûreté
e 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.
e exclamation point within a triangle
alerts the user to important operating,
maintenance, and servicing information in
this User Manual.
CAUTION
To reduce the risk of electrical shocks, re and
possible injuries, you should not
• remove screws, buttons, antennae, jacks or any part
of the enclosure; or
• expose the product to rain or moisture.
FCC ADVISORY (U.S.A.)
1. is 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. ese limits
are designed to provide reasonable protection against
harmful interference in a residential installation.
is 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
o and on, the user is encouraged to try correcting the
problem by one or more of the following measures:
• Reorienting and/or relocating the receiving anten-
nae
• Increasing the distance between the radio/TV
equipment and the KM-112
• Connecting the radio/TV equipment to an outlet
on a dierent circuit than the one into which the
receiver is plugged
• If necessary, consulting the dealer or an experi-
enced radio/TV technician for help
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.
FOR CANADA/POUR LE CANADA
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 che dans la borne correspondante
de la prise et pousser jusquau fond.
is 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).
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).
Using Your KM-112 Safely
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 lled 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 sucient room on all
sides for airow.
4. Do not position the device on or near radiators,
stoves or other electrical equipment (such as
ampliers) that produce heat.
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. e wide blade

8
and the prong are safety features. If the provided plug
does not t into your outlet, consult an electrician for
replacement of the obsolete outlet.
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.
7. Only use the attachments and accessories specied
by the manufacturer.
8. Use only with a cart, stand, tripod, bracket or table
specied by the manufacturer or sold with the device.
When using a cart, use caution when moving the cart.
9. Unplug the product during lightning storms or
when it will not be used for long periods of time.
10. Refer all servicing to qualied 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.
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 re or electrical shock.
12. is 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 re, power outages or
electrical shock.
15. When replacement parts are required, be sure the
service technician has used replacement parts specied
by the manufacturer or with the same characteristics
as the original part. Unauthorized substitutions may
result in re, 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.
17. e product should not be mounted to a wall or
ceiling except as recommended by the manufacturer,
with a mounting accessory recommended by the
manufacturer.
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 qualied service personnel.
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.
KM-112
Vocal Mixer with Computer Audio Interface
One (1) Year Manufacturer Warranty
Lifetime Technical Support
Designed in U.S.A.
Technical Support: [phone]
techsuppor[email protected]
Web site: www.acesonic.com
Acesonic USA, Inc.
161 S. 8th Avenue
City of Industry
CA 91746-3208
U.S.A.
© 2010 Acesonic USA, Inc. • All rights reserved