User's Manual
2-CHANNEL VCA -CONTROLLED
DJ MIXER WITH BEAT COUNTER
DJM-3
R
Version 2.3 September 2005
English
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Fuse
SAFETY RELATED SYMBOLS
CAUTION
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.
RISK OF ELECTRIC SHOCK
DO NOT OPEN
This symbol, wherever used, alerts you to the pre-
Protective Ground
sence of un-insulated and dangerous voltages with-
in the product enclosure. These are voltages that
may be sufficient to constitute the risk of electric
shock or death.
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.
This symbol, wherever used, alerts you to impo-
rtant operating and maintenance instructions.
Please read.
Operating Conditions
Protective Ground Terminal
AC mains (Alternating Current)
Hazardous Live Terminal
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.
ON: Denotes the product is turned on.
OFF: Denotes the product is turned off.
WARNING
Do not install this product near any direct heat source.
Describes precautions that should be observed to
prevent the possibility of death or injury to the user.
Do not block areas of ventilation. Failure to do so
could result in fire.
CAUTION
Keep product away from naked flames.
Describes precautions that should be observed to
prevent damage to the product.
IMPORTANT SAFETY INSTRUCTIONS
Read these instructions
Disposing of this product should not be
placed in municipal waste and should be
Separate collection.
Follow all instructions
Keep these instructions. Do not discard.
Heed all warnings.
WARNING
Only use attachments/accessories specified by the
manufacturer.
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.
Power Cord and Plug
Do not tamper with the power cord or plug. These are
designed for your safety.
Do not remove Ground connections!
Unplug the product before electrical storms occur
and when unused for long periods of time to reduce
the risk of electric shock or fire.
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.
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 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 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.
Do not use any solvents such as Benzol or Alcohol.
For safety, keep product clean and free from dust.
Servicing
Covers should be removed by qualified service
personnel only.
Refer all servicing to qualified service personnel only.
Do not perform any servicing other than those instruc-
tions contained within the User's Manual.
No user serviceable parts inside.
1
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PREFACE
Dear Customer:
Thanks for choosing LTO DJM-3 2-CHANNEL VCA-CONTROLLED DJ MIXER WITH BEAT COUNTER and thanks
for choosing one of the results of LTO AUDIO TEAM's work and researches.
For our LTO AUDIO TEAM, music and sound more than a job... are first of all passion and let us say... Our obsession!
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-3 2-CHANNEL VCA-CONTROLLED DJ MIXER WITH BEAT COUNTER has extensive features i.e. 2
phono /line inputs; 1 microphone input; intelligent dual auto beat per minute counter with time and beat sync. display;
BASS, MID and 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-3 2-CHANNEL VCA-
CONTROLLED 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
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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 INPUT Section
3.1.3 The MAIN OUT Section
3.1.4 The PFL (pre fader level) Section
3.1.5 The LEVEL METER Section
3.1.6 The BPM (Beat per Minute) Section
3.2 The Front Panel
3.2.1 MIC IN Jack
3.2.2 The PHONE OUT Jack
3.2.3 The REVERSE Switch
3.2.4 CROSSFADER CURVE Control
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 EFFECTS send and return
3.3.5 INPUT
3.3.7 GND screw
4. TECHNICAL SPECIFICATIONS.............................................................................................................11
5. SYSTEM BLOCK DIAGRAM.................................................................................................................12
6. WARRANTY...........................................................................................................................................13
3
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1. INTRODUCTION
What a great DJ mixer you have just bought. Your DJM 3 is packed with features such as digital beat counter, 2 turn-
table input, 2 line input, microphone input, 3 bands equaliser and replaceable cross-fader just to mention a few. Your
DJM 3 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 3
2. FEATURES LIST
5 Inputs: 2 Line, 2 Phono, 1 Mic
2 Outputs: Master output through RCA connectors, headphone output via 1/4" TRS jack
Gain Control and bass, middle, treble equaliser on each channel
Accurate Led Meter (10 segments)
PFL switch
Crossfader curve Control
Surround control
Talk Control
Digital BPM (beat per minute) Counter
VCA assisted Faders
4
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3. CONTROL ELEMENTS
3.1 The TOP Cover
CH1
CH2
5
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3.1.1 The CHANNEL Section
-. PHONO-LINE to 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-
LINE position to connect the turntables making sure that
the PHONO-LINE switch on the rear panel is on PHONO
position. With this switch (the one on the rear panel) on
LINE position, the Input Channel will accept a high level
audio signal.
1
2
-. The GAIN control
2
3
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 3 bands equaliser:
Bass, Middle and Treble and you can adjust the gain range
of each from -30dB to +15dB.
5
4
-. 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.
-. The CURVE control
5
Both input channels include a 3-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.
If you set the CURVE switch in MID position you will combine
the SHARP and SOFT configuration.
6
3.1.2 The MIC INPUT Section
-. LEVEL control
6
You can adjust the level of the microphone signal via this
control.
7
8
7
-.TREBLE and BASS controls
With the treble and bass control you can create sound effects
and make the sounds of any microphone better. The gain
range of both bass and treble controls is of -15dB to +15dB.
-. The MIC ON switch
8
Push the MIC On button to activate the MIC INPUT channel.
6
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3.1.3 The MAIN OUT Section
-. LEVEL control
9
This knob controls the overall output volume.
-. The TALK control
10
9
When you speak through a connected microphone the
volume of the reproduced music will be automatically
reduced by the mixer for better intelligibility of your voice.
You can determine yourself how much the volume of the
music will be reduced via this control.
10
-. The SURROUND control
11
11
12
DJ Mixers are often used in quite inappropriate venues
and the positioning of the loudspeakers is not always
optimal. The Surround Control allow you to get a better
transparency and stereo image and will contribute to
"clean" you mix.
-.The SURROUND ON switch
12
You can turn off the Surround function via this switch.
You can also run fast A/B comparison (with surround/
without surround) via this switch.
3.1.4 The PFL (pre fader level) Section
When you connect a headphone to your DJM 3 you have the
chance of pre-listen the audio signal before the signal reach
the Main output.
13
-.LEVEL control
This knob will adjust the level of the headphone signal.
13
14
15
-.The MIX control
14
Set the switch mode (15) in STEREO position and you can
fade between channel 1 and 2.
-.MODE switch
15
This is a 2-position switch. When the switch is in STEREO
position see above at (14). If you choose the SPLIT position
the two channels will be fully separated. So you will hear
channel 1 only on the left side and you will hear Channel 2
only on the right side.
17
3.1.5 The LEVEL METER Section
16
-.LEVEL METER
This 10 segments LED's Meter will read the signal selected
via the MAIN/PFL switch. Please see following.
16
17
-.MAIN/PFL switch
When this switch is in MAIN function (main Led on) the Level
Meter will display the output level of the Left and Right channels;
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.
7
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3.1.6 The BPM ( Beat per Minute) Section
18
20
21
CH1
CH2
19
22
This is a key and exclusive function in your DJM 3 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
18
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
19
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
20
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.
-. TIME OFFSET Led segment
21
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
22
Through this crossfader you can fade in between Channel 1 and 2. The Crossfader on your DJM3 is VCA
(Voltage Control Amplifier) controlled and it is User replaceable.
8
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3.2 The Front Panel
REVERSE HOLD
SMOOTH
SHARP
CROSSFADER
CURVE
MIC IN
PHONE OUT
REVERSE TAP
23
24
25
26
3.2.1 MIC IN Jack
23
This input will accept and unbalanced low impedance microphone. The functions of the microphone will be
controlled by the MIC INPUT section on the Top Panel.
3.2.2 The PHONE OUT Jack
24
This input will accept a standard headphone with a 1/4" stereo jack
3.2.3 The REVERSE Switch
25
This switch will invert the direction of the crossfader so that an immediate inversion of the two channels will
be achieved. This switch has two functions: TAP and HOLD.
In TAP function the 2 channels will be reversed instantly and will go back in their original set as soon as you
release the switch in center position
In HOLD function the two channels will be locked in the reverse position. To cancel the effect you will need
to push back the switch in the center position.
3.2.4 CROSSFADER CURVE Control
26
Via this knob you will adjust the crossfader curve. Please see (5) earlier in this Manual for further reference.
9
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3.3.The Rear Panel
UK/AUST
210-240V 50Hz
Fuse:T200mAL
USA / Canada
100-120V 60Hz
Fuse:T400mAL
CAUTION
RISK OF ELECTRIC SHOCK
DO NOT OPEN
AC INPUT
EUROPE
MODEL
SERIAL
WARNING: SHOCK HAZARD
-
DO NOT OPEN
AVIS: RISQUE DE CHOC ELECTRIQUE NE PAS OUVRIR
-
210-240V 50Hz
Fuse:T200mAL
RATED POWER CONSUMPTION: 12W
GND
GND
Apparaten skall anslutas till
Jordat uttag nar den ansluts
Till ett natverk
SEND RETURN
TO MAIN
MAIN
TAPE
FROM PFL
LINE
PHONO
LINE
PHONO
f u s e 2 5 a 0 V w i t h o n l y U s e
POWER
L
ON
R
OFF
MAIN OUT
INPUT 2
INPUT 1
EFFECTS
PHONO
LINE
PHONO
LINE
27
28
29
30
31
32
3.3.1 AC Inlet and Fuse Holder
27
The fuse holder position (please follow the triangle that indicated the voltage accepted by the unit) can be changed
only by a qualified Engineer. Please check the Voltage accepted by the unit and the Voltage available from your
AC sockets before connecting the unit to the Mains.
3.3.2 POWER Switch
28
This switch turns the Mixer ON and OFF.
3.3.3 MAIN OUT
29
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 3 to an amplifier. Through the TAPE output
you can connect your DJM 3 to a tape recorder.
3.3.4 EFFECTS send and return
30
You can send the PFL (pre fader level) signal through the SEND sockets to a signal processor such as reverb,
equaliser, etc. Then from the same effect unit you bring the signal back into the DJM 3 via the RETURN
sockets and the audio signal is routed into the MAIN output.
3.3.5 INPUT
31
- 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.
3.3.6 GND screw
32
This grounding connection is provided for your turntables.
10
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4. TECHNICAL SPECIFICATIONS
INPUTS
Phono Inputs 1 and 2
Line Inputs 1 and 2
Mic Input
40dB gain@1kHz,unbalanced
0dB gain, unbalanced
40dB gain, servo balanced
0dB gain, unbalanced
Return
OUTPUTS
Headphones
Main Out
Tape Out
Send
typically 125mW@ 1% THD
max +21dBu
typically 0dBu
typically 0dBu
GENERAL
+15dB/ 30dB
+15dB/ 30dB
+15dB/ 30dB
+15dB/ 15dB
+15dB/ 15dB
Stereo Bass
Stereo Middle
Stereo Treble
Mic Bass
Mic Treble
Input Gain Adjustment
Signal to Noise ratio(S/N)
Crosstalk
20dB
9dB ( 3dB)
>90dB(LINE)
>70dB(LINE)
Distortion(THD)
Frequency Response
0.1%
20Hz 20KHz ( 2dB)
POWER SUPPLY
Connector type
Main Voltage
3
pole IEC, grounded
USA/Canada 100 120V~, 60Hz
UK/AUST 210 240V~, 50Hz
Power Consumption
Fuse
12W
95 120V~ : T400mAL
210 240V~ : T200mAL
DIMENSIONS AND WEIGHT
Dimension
248(L) 245(W) 76.6(H)mm (9.8" 9.6" 3.0")
2.9Kg (6.39lb)
Weight
11
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5. SYSTEM BLOCK DIAGRAM
12
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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 LTO warrants that this product will be free from any defects in materials and/or workmanship for a period
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, LTO may repair or replace this product at its own option at no charge to you for
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 LTO be liable for any incidental or consequential damages. Some states do not allow the exclu-
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
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SEIKAKU TECHNICAL GROUP LIMITED
No. 1, Lane 17, Sec. 2, Han Shi West Road, Taichung 40151 Taiwan
All rights reserved to ALTO. All features and content might be changed
without prior notice. Any photocopy, translation, or reproduction of part of this
c
manual without written permission is forbidden. Copyright
2005 SEIKAKU GROUP
NF01037-2.3
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