Alto DJM-2 User Manual [ru]

User's Manual

2-CHANNEL DJ MIXER

DJM-2

WITH BEAT COUNTER

R

LTO

www.altoproaudio.com

Version 2.3 September 2005

English

SAFETY RELATED SYMBOLS

CAUTION

RISK OFELECTRIC SHOCK

DO NOTOPEN

This symbol, wherever used, alerts you to the pre­sence of un-insulated and dangerous voltages with­in the product enclosure. These are voltages that
may be sufficient to constitute the risk of electric
shock or death.

This symbol, wherever used, alerts you to impo­rtant operating and maintenance instructions.
Please read.

Fuse

To prevent fire and damage to the product, use only
the recommended fuse type as indicated in this
manual. Do not short-circuit the fuse holder. Before
replacing the fuse, make sure that the product is
OFF and disconnected from the AC outlet.

Protective Ground

Before turning the product ON, make sure that it is
connected to Ground. This is to prevent the risk of
electric shock.

Never cut internal or external Ground wires. Likewise,
never remove Ground wiring from the Protective
Ground Terminal.

Protective Ground Terminal

AC mains (Alternating Current)

Hazardous Live Terminal

ON: Denotes the product is turned on.

OFF: Denotes the product is turned off.

WARNING

Describes precautions that should be observed to
prevent the possibility of death or injury to the user.

CAUTION

Describes precautions that should be observed to
prevent damage to the product.

Disposing of this product should not be
placed in municipal waste and should be
Separate collection.

WARNING

Power Supply

Ensure that the mains source voltage (AC outlet)
matches the voltage rating of the product. Failure
to do so could result in damage to the product and
possibly the user.

Unplug the product before electrical storms occur
and when unused for long periods of time to reduce
the risk of electric shock or fire.

External Connection

Always use proper ready-made insulated mains
cabling (power cord). Failure to do so could result
in shock/death or fire. If in doubt, seek advice from
a registered electrician.

Do Not Remove Any Covers

Within the product are areas where high voltages
may present. To reduce the risk of electric shock do
not remove any covers unless the AC mains power
cord is removed.

Covers should be removed by qualified service
personnel only.

No user serviceable parts inside.

Operating Conditions

Always install in accordance with the manufacturer's
instructions.

To avoid the risk of electric shock and damage, do
not subject this product to any liquid/rain or moisture.
Do not use this product when in close proximity to
water.

Do not install this product near any direct heat source.

Do not block areas of ventilation. Failure to do so
could result in fire.

Keep product away from naked flames.

IMPORTANT SAFETY INSTRUCTIONS

Read these instructions

Follow all instructions

Keep these instructions. Do not discard.

Heed all warnings.

Only use attachments/accessories specified by the
manufacturer.

Power Cord and Plug

Do not tamper with the power cord or plug. These are
designed for your safety.

Do not remove Ground connections!

If the plug does not fit your AC outlet seek advice from
a qualified electrician.

Protect the power cord and plug from any physical
stress to avoid risk of electric shock.

Do not place heavy objects on the power cord. This
could cause electric shock or fire.

Cleaning

When required, either blow off dust from the product
or use a dry cloth.

Do not use any solvents such as Benzol or Alcohol.
For safety, keep product clean and free from dust.

Servicing

Refer all servicing to qualified service personnel only.

Do not perform any servicing other than those instruc­tions contained within the User's Manual.

1

PREFACE

Dear Customer:

Thanks for choosing LTO DJM-2 and one
of the results of AUDIO TEAM's work and researches.

LTO

2-CHANNEL DJ MIXER WITH BEAT COUNTER thanks for choosing

For our LTO AUDIO TEAM, music and sound more than a job are first of all passion and let us say ur obsession!... ... o

We have been designing professional audio products for a long time in cooperation with some of the major brands in
the world in the audio field.

Because we are convinced you are the most important member of LTO AUTIO TEAM and the one confirming the
quality of our job, we like to share with you our work and our dreams, paying attention to your suggestions and your
comments.

Following this idea we create our products and we will create the new ones! From our side, we guarantee you and
we will guarantee you also in future the best quality, the best fruits of our continuous researches and the best prices.

Our LTO DJM-2 has extensive features inputs; 12-CHANNEL DJ MIXER WITH BEAT COUNTER i.e. 2 phono/line
microphone input; intelligent dual auto beats per minute counter with time and bass EQand beat sync. display; treble
on each channel; crossfader curve control etc., which are suitable for many other professional applications.

Nothing else to add, but that we would like to thank all the people that made the LTO DJM-2 2-CHANNEL DJ MIXER
WITH BEAT COUNTER, and thank our designers and all the LTO staff people who make possible the realization
of products containing our idea of music and sound and are ready to support you, our customers, in the best way,
conscious that you are our best richness.

Thank you very much

LTO AUDIO TEAM

2

TABLE OF CONTENTS

1. INTRODUCTION...................................................................................................................................4

2. FEATURES LIST....................................................................................................................................4

3. CONTROL ELEMENTS........................................................................................................................5

3.1 The Top Cover

3.1.1 The CHANNEL Section

3.1.2 The MIC/MAIN Section

3.1.3 The PFL (pre fader level) Section

3.1.4 The LEVEL METER Section

3.1.5 The BPM Section

3.2 The Front Panel

3.2.1 MIC IN Jack

3.2.2 The PHONE OUT Jack

3.3 The Rear Panel

3.3.1 AC Inlet and Fuse Holder

3.3.2 POWER Switch

3.3.3 MAIN OUT

3.3.4 INPUT

3.3.5 GND screw

4. TECHNICAL ...........................................................................................................11SPECIFICATIONS

5. SYSTEM BLOCK DIAGRAM...............................................................................................................12

6. WARRANTY.........................................................................................................................................13

3

1. INTRODUCTION

What a great DJ mixer you have just bought. your DJM 2 is packed with features such as digital beat counter, 2 turn­table inputs, 2 line inputs, microphone input, 2 bands equaliser and replaceable cross-fader just to mention a few.

Your DJM 2 is VCA Controlled and it is very easy to operate. Please go through this Manual carefully and you will get
the best out of your DJM 2.

2. FEATURES LIST

5 Inputs: 2 Phono and 2 Line inputs, 1 Microphone input

2 Outputs: Master output through RCA connector, headphone output via 1/4" TRS jack

Crossfader Curve control

Digital BPM (Beats Per Minute) Counter

PFL switch

Gain control and bass, treble equaliser on each channel

Highly accurate 10-segment Bar-graph meters

VCA assisted Faders

4

3. CONTROL ELEMENTS

3.1 The Top Cover

PFL

MIN MAX

LEVEL

CH1 CH2

MIX

SHARP

SOFT

CURVE

CHANNEL 2CHANNEL 1

PHONO/LINE

MIN MAX

GAIN

-30dB +15dB

TREBLE TREBLE

MAIN / PFL

-30dB +15dB

BASS

LEVEL METER

PFLMAIN

+10

+7

+4

+2

0

-2

-4

-7

-10

-20

PHONO/LINE

MIN MAX

-30dB +15dB

-30dB +15dB

GAIN

BASS

R

LTO

2-CHANNEL DJ MIXER WITH BEAT COUNTER

DJM-2

MIC / MAIN

MIN MAX

MAIN

MIN MAX

MIC LEVEL

CURVE

SHARP

SOFT

BEAT ASSIST

PGM 1

TEMPO DIFFERENCE

TIME OFFSET

CH 1 CH 2

PGM 2

BEAT ASSIST

5

3.1.1 The CHANNEL Section

-. PHONO / LINE switch

1

This switch is available on both input channels. You shall
use the LINE position for all high level audio signals such
as CD Players, DAT, MD, etc. You shall use the PHONO
position to connect the turntables.

-. The GAIN control

2

Via this knob you will adjust the input level. Do not turn
this control too much clockwise or you will overload the
channel but do not turn it too much counterclockwise
or you will generate background hiss.

-. The EQUALIZER control

3

Both Input Channels are provided with 2 bands equaliser:
Bass and Treble and you can adjust the gain range of
each from -30dB to +15dB.

-. The PROGRAM Fader

4

There is a Program Fader available on both channels.
For optimum performance and operation the 2 Faders
are VCA (Voltage Control Amplifier) controlled. These
Faders adjust the overall level of the input channels.

CHANNEL 1

1

PHONO/LINE

2

MIN MAX

GAIN

-30dB +15dB

TREBLE

-30dB +15dB

CURVE

SHARP

5

5

SOFT

BASS

3

4

-. The CURVE control

Both input channels include a 2-position switch denom­inated CURVE.

If you set the CURVE switch on SHARP position the
level will be changed quite quickly by the PROGRAM
Fader even if you move the Fader slowly.

If you set the CURVE switch in SOFT position, the level
will be changed much more slowly by the PROGRAM
Fader even if you move the Fader quickly.

3.1.2 The MIC/MAIN Section

-. MAIN LEVEL control

This knob controls the overall output volume.

-. MIC LEVEL control

You can adjust the level of the microphone signal via

control.this

5

6

PGM 1

MIC / MAIN

6

7

MIN MAX

MAIN

7

MIN MAX

MIC LEVEL

6

3.1.3 The PFL (pre fader level) Section

When you connect a headphone to your DJM 2 you have the
chance of pre-listen the audio signal before the signal reach
the Main output.

PFL

-. LEVEL control

8

This knob will adjust the level of the headphone signal.

-. The MIX control

9

You can fade between channel 1 and 2 via this control.

3.1.4 The LEVEL METER Section

-. LEVEL METER

10

This 10 segments LED's Meter will read the signal selected
via the MAIN/PFL switch. Please see following.

-. MAIN/PFL switch

11

When this switch is in MAIN function (main Led on) the
Level Meter will display the output level of the Left and
Right channels;

MIN MAX

LEVEL

CH1 CH2

MIX

8

9

10

When this switch is in PFL function (PFL Led on) the Level
Meter will display the PFL headphone signal: channel 1
on left Led Meter and Channel 2 on right Led Meter.

11

7

3.1.5 The BPM Section

12 14 15

CH 1 CH 2

13

This is a key and exclusive function in your DJM 2 mixer. What is the Beat Per Minute function/ It simply indicate
the "speed" of the music through a 3-digit display. The beats (per minute) of the music are automatically measured
by the BPM and then displayed on the 3-digit display. Of course there is one BPM counter for every input channel.
Thanks to the BPM function you can mix more quickly songs with different tempo.

-. The TEMPO Display

This 3-digit display (one for every channel) will show the tempo of each channel. If the tempo changes the
display will change accordingly.

-. The BEAT ASSIST switch

The Beat Assist button is available on both channels and it is below the Tempo display. Press the Beat
Assist button and you can manually regulate the beat. The Led nearby the Beat Assist button will show
you when the function is active or not.

-. TEMPO DIFFERENCE Led segment

This 7 segment Led Meter will indicate the tempo difference in between the two channels or programs. If
the tempos on both channels is the same the center LED will light. If the tempo of the music on channel 1
is faster the LED's on the left will start to light and vice-versa.

12

13

16

14

-. TIME OFFSET Led segment

This 7 segments Led Meter is positioned immediately below the Tempo Difference display. This display
will indicate the synchronicity of the 2 channels. When the 2 channels are syncronized, the center LED
will light. If LED's on the left will start to light, Channel 1 is getting out of sync and vice-versa.

-. The CROSSFADER

Through this crossfader you can fade in between Channel 1 and 2. The Crossfader on your DJM 2 is
VCA (Voltage Control Amplifier) controlled and it is User replaceable.

16

15

8

3.2 The Front Panel

3.2.1MIC IN Jack

This input will accept any unbalanced low impedance microphone. The functions of the microphone will be controlled
by the MIC/MAIN section on the Top Panel.

3.2.2The PHONE OUT Jack

This input will accept a standard headphone with a 1/4" stereo jack.

3.3.The Rear Panel

UK / AUST

240V 50Hz

Fuse:T100mAL

USA / Canada

100-120V 60Hz

Fuse:T200mAL

17

MIC

IN

17

18

PHONE

OUT

18

AC INPUT

EUROPE
210-240V 50Hz
Fuse:T100mAL

RATED POWER CONSUMPTION: 10W

Apparaten skall anslutas till
Jordat uttag nar den ansluts
Till ett natverk

Use only with a 250V fuse

Use only with a 250V fuse

Use only with a 250V fuse

19

CAUTION

RISK OF ELECTRIC SHOCK

WARNING: SHOCK HAZARD
AVIS: RISQUE DE CHOC ELECTRIQUE

POWER

DO NOT OPEN

ON

OFF

- DO NOT OPEN

MAIN OUT

- NE PASOUVRIR

MODEL

TAPEMAIN

LINE

L

R

INPUT 2 INPUT 1

PHONO

SERIAL

PHONO

LINE

L

R

20 21 22 23

GND

9

3.3.1 AC Inlet and Fuse Holder

This connector is meant for the connection of the supplied power cord. Please check the Voltage accepted by the
unit and the Voltage available from your AC sockets before connecting the unit to the Mains.

19

3.3.2 POWER Switch

This switch turns the Mixer ON and OFF.

3.3.3 MAIN OUT

Both MAIN output and TAPE output are RCA types connectors. Yes the same largely used in hi-fi and are low
impedance. Through the MAIN output you can connect your DJM 2 to an amplifier. Through the TAPE output
you can connect your DJM 2 to a tape recorder.

3.3.4 INPUT

- PHONO input: Both Channels feature PHONO inputs including RIIA preamplifier for turntable. PIN (RCA) jacks
shall be used to connect the turntable.

- LINE input: Through these RCA type sockets you can connect a CD player, an MD player or any other high level
device such as Tape Recorder, DAT, etc,

Important Notice: If you wish to connect LINE level devices into the LINE/PHONO input, make sure that the LINE/
PHONO switch is on LINE position otherwise the sensitive RIAA preamplifier built-in in the Phono input will be
overloaded and will produce distortion.

3.3.5 GND screw

This grounding connection is provided for your turntables.

22

20

21

23

10

4. TECHNICAL SPECIFICATIONS

INPUTS

Phono Inputs 1 and 2

Line Inputs 1 and 2

Mic Input

OUTPUTS

Headphones

Main Out

Tape Out

GENERAL

Stereo Bass

Stereo Treble

Input Gain Adjustment

Signal to Noise ratio (S/N)

Distortion (THD)

Frequency Response

48dB gain@1kHz,unbalanced

8dB gain, unbalanced

58

dB gain, servo balanced

typically 125mW@ 1% THD

max +21dBu

typically 0dBu

+15dB/ 30dB

+15dB/ 30dB

20dB 6dB ( 3dB)

>85dB (LINE)

0.1%

20Hz 20KHz ( 2dB)

POWER SUPPLY

Connector type

Mains Voltage

Rated Power Consumption

Fuse

DIMENSION AND WEIGHT

Dimension

Weight

3 pole IEC, grounded

USA / Canada100 120V~, 60Hz

Europe 210 240V~, 50Hz

U.K. / Australia 240V~, 50Hz

10W

100 120V~ : T200mAL

210 240V~ : T100mAL

221.5(L) 245(W) 76.6(H)mm (8.7" 9.6" 3.0")

2.6Kg (5.73lb)

11

5. SYSTEM BLOCK DIAGRAM

12

6. WARRANTY

1. WARRANTY REGISTRATION CARD

To obtain Warranty Service, the buyer should first fill out and return the enclosed Warranty Registration Card within
10 days of the Purchase Date.

All the information presented in this Warranty Registration Card gives the manufacturer a better understanding of
the sales status, so as to purport a more effective and efficient after-sales warranty service.

Please fill out all the information carefully and genuinely, miswriting or absence of this card will void your warranty
service.

2. RETURN NOTICE

2.1 In case of return for any warranty service, please make sure that the product is well packed in its original shipping
carton, and it can protect your unit from any other extra damage.

2.2 Please provide a copy of your sales receipt or other proof of purchase with the returned machine, and give detail
information about your return address and contact telephone number.

2.3 A brief description of the defect will be appreciated.

2.4 Please prepay all the costs involved in the return shipping, handling and insurance.

3. TERMS AND CONDITIONS

3.1 warrants that this product will be free from any defects in materials and/or workmanship for a period

LTO

of 1 year from the purchase date if you have completed the Warranty Registration Card in time.

3.2 The warranty service is only available to the original consumer, who purchased this product directly from the
retail dealer, and it can not be transferred.

3.3 During the warranty service, may repair or replace this product at its own option at no charge to you for

LTO

parts or for labor in accordance with the right side of this limited warranty.

3.4 This warranty does not apply to the damages to this product that occurred as the following conditions:

Instead of operating in accordance with the user's manual thoroughly, any abuse or misuse of this product.

Normal tear and wear.

The product has been altered or modified in any way.

Damage which may have been caused either directly or indirectly by another product / force / etc

Abnormal service or repairing by anyone other than the qualified personnel or technician.

And in such cases, all the expenses will be charged to the buyer.

3.5 In no event shall be liable for any incidental or consequential damages. Some states do not allow the exclu-

LTO

sion or limitation of incidental or consequential damages, so the above exclusion or limitation may not apply to you.

3.6 This warranty gives you the specific rights, and these rights are compatible with the state laws, you may also
have other statutory rights that may vary from state to state.

13

SE KAKU TECHNICAL GROUP LIMITEDI

No. 1, Lane 17, Sec. 2, Han Shi West Road, Taichung 40151 Taiwan

http://www.altoproaudio.com Tel: [phone]

email: [e-mail] Fax: [phone]

All rights reserved to ALTO. All features and content might be changed

without prior notice. Any photocopy, translation, or reproduction of part of this

manual without written permission is forbidden. Copyright 2005 SEIKAKU GROUP

c

NF0 -2.30866