SMX-401
P R O F E S S I O N A L DJ MIXER
OWNER’S MANUAL
STANTON MAGNETICS, INC
[email protected] • (954) 689-8833
w w w . s t a n t o n d j . c o m
© 2003, Stanton Magnetics, Inc.
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TECHNICAL SPECIFICATIONS
SMX-401 FEATURES
Line Inputs:
2 (RCA) x 3 channels, -10 dBV /10 kOhm
2 (RCA) x 3 channels, -50 dBV / 47 kOhm
1(1/4")/ 1 XLR -50 dBV /4.7 kOhm
2 (1/4"), -10 dBV / 10 kOhm
When Stanton set out to
Phono Inputs
Mic Inputs
design its new SMX-401 3-
Channel DJ Mixer, compro-
mise was not an option. This
Return Inputs
Send Outputs
Master Outputs
2 (1/4"), -10 dBV
2 (1/4”) Balanced/ (RCA) unbalanced,
-2 dBu balanced / -10 dBV unbalanced
2 (1/4”) Balanced/ (RCA) unbalanced,
-2 dBu balanced / -10 dBV unbalanced
2 (1/4”) balanced, -2 dBu / 100 Ohms
1 (1/4 inch), 1 (1/8 inch)greater than 32 Ohm load
15.3 in x 10.2 in x 4.3 in (39 cm x 26 cm x 11 cm)
7.7 lbs (3.5 kg )
10"
professional
mixer
boasts a wide range of intu-
itive controls, superb sound,
and high-quality components
including a genuine Penny &
Giles crossfader.
Record Outputs
Booth Outputs
Headphone Output
Dimensions (LxWxD)
Weight
Frequency Response
Max Gain
20 Hz to 20 kHz +/-1 dB (line)
12 dB
Whether mixing house, tech-
no or trance from vinyl or
THD+N
< 0.015 % at 1 kHz
Signal to Noise Ratio
Noise
110 dB (main signal path) (ref: max level)
< -92 dBV (Line input to any output)
Hi +9, -45 dB, Kill: -45 dB
CDs, the SMX-401 has got
Channel EQ
all the bases covered, thanks
Mid +9, -35 dB, Kill: -35 dB
to 3 phono inputs, 6 line inputs and 2 mic inputs with independent EQ.
Each channel sports gain control, bright input LED meters, a 3-band EQ
with full Kill capability, as well as Pan knobs. The SMX-401 also sports a
full-featured Cue section which includes PFL, Cue Pan, and dual head-
phone outputs for tag-team mixing.
Low +9, -55 dB, Kill: -55 dB
Crosstalk
Fader Kill
< -90 dB at 1 kHz
< -90 dB (channel and crossfader)
REPLACEMENT PARTS
Professional DJ’s will immediately appreciate the SMX-401‚s 3-band Kill
switches for channels 1 and 3, conveniently located right next to the
crossfader. For creative mixing, the SMX-401 also offers an Effects loop
with 1/4" Send and Return jacks. This mixer is rounded out with profes-
sional balanced Master outputs, separate Booth output, and a user-
replaceable fader design.
The following user replaceable parts are available from your local
Stanton dealer.
LF401
Channel input fader
CF-PG401
PS-16US
PS-16EU
PS-16UK
Penny & Giles crossfader
US Power Supply (110v)
European Power Supply (220v)
UK only Power Supply (240v)
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DESCRIPTION OF FUNCTIONS
FADER CLEANING AND REPLACEMENT
ing all traces of dirt and contamination.
4. Remove the fader track (G) by slowly withdrawing from the
A
unit. Place fader track on desk or working surface with
black contacts facing upwards. If necessary, the track can
be washed in warm water, wiped gently then dried thor-
oughly using a dry cloth. Use a lint free cloth or swab to
wipe the tracks and check for marks along the track.
(Note: Lint free cloth should be used to avoid
B
dust/fibers being deposited on the track). If the track
appears excessively worn, or if cleaning does not
F
improve operation, replacement may be necessary.
G
5. Examine the center channel of the fader body and if
dirty, clean using cotton buds.
6. Re-assemble and lubricate the fader as follows:
C
6.1) Secure the end block and guide rail onto the fader
body.
E
6.2) Insert track into the fader body.
D
6.3) Insert slider assembly onto guide rail and into the
fader body. Move slider from end to end to
disperse the oil evenly. Carefully wipe
away any excess oil using a tissue or cloth.
6.4) Lubricate the guide rail by placing one
G
drop of silicon liquid oil onto the guide rail
(F).
6.5) Insert dust cover.
6.6) Insert fader track back into fader body with wires com-
ing out open end of fader body.
I
6.7) Secure the remaining end block ensuring that the
track wires (I) are not pinched between the end block and
fader casing.
7. Once assembled, move the slider from end to end to ensure operation
is smooth.
8. Attach fader to fader plate. (NOTE: As noted earlier if you do not want
to change positioning of fader, keep the 2 fader plate screws loose and
shift the fader until it is aligned with the marks you created in step 1,
then tighten fader plate screws.)
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FADER CLEANING AND REPLACEMENT
DESCRIPTION OF FUNCTIONS
After constant use the SMX-401 faders may need to be cleaned and
lubricated from time to time. This will ensure long life and keep a
smooth feeling throughout the fader's lifetime. Follow the instructions
below to lubricate and clean your faders:
1. Microphone 1 input - This combo (1/4”/XLR) connector is used to
connect a microphone. The volume is controlled by the MIC 1 knob.
2. Microphone 2 input - This 1/4” connector is used to connect a
microphone. The volume is controlled by the MIC 2 knob.
3. Mic 1 level - Controls the input level of Microphone input 1.
Removing a fader:
4. Mic 2 level - Controls the input level of Microphone input 2.
1. Make sure mixer is powered off and power supply is disconnected from
5. Mic equalizer - Individual controls for high frequency, midrange, and
low frequency equalization. The EQ controls both Microphone inputs.
Note: Any changes made to EQ settings will change the overall out -
put level.
back of mixer.
3. Remove the fader to be cleaned or replaced by unscrewing the 2 outer
screws on the fader plate (removing the 2 inner screws will detach the
fader from the fader plate).
6. Effect assign - Used to assign the effect signal to each channel or
the mic. The level of the effect is controlled by the Send and Return
knobs.
4. Disconnect the fader from mixer by removing the connector on the bot-
tom of the fader.
7. Pre fader listen - Selects the channel(s) - 1, 2, or 3 - to be pre-
viewed in the headphones.
Installing a fader:
8. Channel faders - Controls the output volume of each channel. The
1. Once original fader has been removed, simply plug the 4-pin connec-
signal is routed to the line faders after the gain, EQ, pan, and effects.
tor into the new fader.
9. Crossfader - The crossfader is used to cross fade between channels
3. Place fader back in mixer and replace 2 outer screws to secure fader.
1 and 3.
10. Kill switches - Kill switches are used to completely eliminate Hi,
Mid, or Low frequencies from the audio. This is used for tricks dur-
ing a mix.
Cleaning a Penny & Giles fader:
1. Remove 2 mounting screws from fader plate. (NOTE: The P&G fader
is designed with floating mounting threads for precise mechanical cen-
tralizing of the fader. If you desire to keep your fader`s current mount-
ing position we suggest that you make 2 marks on both ends of the
fader on the fader plate to indicate the P&G fader position.) See Figure
1.
11. Headphone outputs - This is the headphone output jack to connect
your headphones.
12. Cue pan - Fades the headphone output between the PFL signal
(selected by the Cue Select buttons) and master output, effectively
allowing the user to preview a mix.
13. Cue level - Controls the volume of the headphone output.
2. Once fader is removed from unit, remove the two screws (A) from the
end of the fader body where the wires exit the fader casing. Pull away
the end block. Withdraw the dust cover (B). Taking great care, remove
the slider assembly (C), ensuring that the wiper contacts (D) are not
damaged as this will affect the operation of the fader. Clean the slider
assembly by gently wiping the wiper contacts and slider bearings (E)
using a tissue or cotton bud. If slider bearing
14. Booth level - Controls the booth output level. This is basically a 2nd
output. It is usually used for monitoring in a DJ booth, but can be
used for various applications.
15/16. Effect Levels - Send and Return levels are used to control the
volume of the external effects unit connected to the SMX-401 using
the jacks labeled ‘send’ and ‘return’ on the back of the mixer. SEND
is the level of the signal sent to the effect unit, and RETURN is the
level of the processed signal returning from the the effects unit. the
signal sent to the unit is selected by pushing the ‘FX LOOP’ button.
are excessively worn, as indicated by exces-
sive slider rocking then contact Stanton for
replacement.
17. Master output Pan- This is the pan or balance control for the mast
3. Remove the single upper screw on the oppo-
output.
site end block to remove the guide rail. Clean
the guide rail (F) with a tissue or cloth, remov-
Figure 1
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DESCRIPTION OF FUNCTIONS
DESCRIPTION OF FUNCTIONS
18. Master output level - Controls the overall output level of the mixer.
19. Output meters - These LEDs let you know if the audio coming out
of the mixer is loud enough (or too loud!). If the LEDs reach the red,
the mixer is probably clipping, or distorting.
20. Input selectors - These toggle switches select the input source
between phono and line for each channel.
21. Input gains - Controls the input sensitivity level of each channel. An
LED meter is provided on each of the 3 channels for proper adjust-
ment of the levels.
22. Channel equalizer - Individual controls for high frequency,
midrange, and low frequency equalization with +9dB/Kill adjust-
ments. Note: Any changes made to EQ settings will change the over -
all output level.
Power: This is the power switch to turn the mixer "ON" or "OFF"
23. Channel pans - Controls left/right output balance of each channel.
AC IN: This is the Input connection for the included power supply.
Send and Return: These connectors are used to connect an outboard
signal processor (such as the Stanton DFX-1). Connect a 1/4” mono
cable from the SEND output to the Line In on your signal processor.
Connect the RETURN input to the Line Out on your signal processor.
Your effects loop should now be working. Check it by turning the send
and return volume knobs to the center position (12 o’clock) and select-
ing FX LOOP on any of the mixer’s channels.
Line: Line inputs (represented by the letter L, followed by the input
number) are used to connect to line level sources such as CD players,
Mini Discs, DATs, samplers, etc.
TT: TT (or phono) inputs are used to connect to turntables.
Ground: Connects to the turntable ground cable to eliminate electrical
hum. Ground cables are usually supplied with turntables
Master: Connects to an amplifier, EQ, crossover, or other outboard sig-
nal processing.
Booth: This is a second output, like the master output. It is usually used
as a separate output in the DJ Booth for the DJ to monitor the mix
REC: This is the record output. The output level is static in this case,
there are no volume controls. It is used to connect directly to tape or CD
recorders. The volume can be set from the recording device.
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