Troubleshooting
Problem / Symptom
Possible Cause/ Solution
Only plug turntables into this input, do not plug in
CD players or other Line Level sources. Turn down
the INPUT GAIN CONTROL
Sound is distorted
Phono Input
R M -2 2 Professional DJ Mixer
Make sure you are using good shielded audio
cables. Some less expensive audio cables can be
susceptible to hum and interference. Keep your
audio cables away from AC power cables and AC
transformers. Make sure the mixer is not mounted
too close to high power amplifiers or lighting
equipment power supplies or ballasts. Make sure
your turntables are properly
I hear hum.
grounded.
If you are using a microphone, make sure that
you are not too close to the speakers or
headphones. If you hear feedback on the phono
input, then the turntable may be mounted to close
to the speakers. Also, make sure the turntable
base is placed on a surface that does not vibrate
or resonate easily when the speakers are turned
up loudly.
I hear
feedback
Warranty
This unit has been designed and manufactured using quality components.
Therefore, it is warranted to be free from defects in materials (limited as specified
below), and workmanship for a period of twelve (12) months from the original
purchase date. During this period, all service and parts
necessary to repair a defect will be free of charge. This limited warranty applies to
mechanical parts which are subject to wear and tear as specified:
O W N E R ’S M A N U A L
• Faders, specified durability: 15,000 cycles
• Rotary potentiometers, specified durability: 10,000 cycles
• Switches, specified durability: 10,000 cycles
Consequently, the parts listed above are warranted to be free from defects in materi-
als and workmanship for a period of thirty days (30) days from the original purchase
date.
FOR THE WARRANTY TO BE VALID, PLEASE COMPLETE THE ONLINE
WARRANTY REGISTRATION FORM FOUND AT
STANTON MAGNETICS, LLC
WWW.STANTONMAGNETICS.COM
© 2003, Stanton Magnetics, LLC
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Technical Specifications
Welcome
Frequency Response
THD+N (Line)
Signal to Noise Ratio
(ref: max level)
Noise
20 Hz to 20 kHz +1 dB
> 0.005 % at 1 kHz
Congratulations on your choice of the Stanton RM-22 Professional
DJ Mixer. You now own one of the most flexible DJ mixers ever
designed. The rackmountable RM-22 offers up to three Microphone
inputs, three Phono inputs and nine Line inputs—making it one of
the most powerful DJ mixers around. And with Stanton’s smooth
fader movement and rock-solid reliability, it’s the perfect mixer for
mobile and club DJs alike.
> 109 dB (main signal path)
-98 dBV (Line input to any output)
Crosstalk
(Line to Line, Phono to
Line, Line to Phono)
Fader Kill
Please take a moment to familiarize yourself with the RM-22 by
reading through this Owner’s Manual. (And don’t worry—we’ll make
it quick so you can start mixing!)
> -90 dB
> -90 dB
Microphone EQ
Graphic EQ (7 band
stereo)
Hi, Low +12 dB
RM-22 Features
40 Hz, 80 Hz, 160 Hz, 500 Hz,
1.6 kHz, 3.2 kHz, 6.4 kHz + 10 dB
7(RCA) , 1(1/4” Balanced) -10 dBV / >10 kOhm
2 (RCA), -50 dBV / 47 kOhm
The RM-22 is an extremely versatile mixer with enough inputs to
accommodate many DJ setups including multiple turntables, CD
players and microphones. Below we list some of the RM-22’s most
salient features (in case you forgot already!):
Line Inputs
Phono Inputs
Phono / CD
2 (RCA), -50 dBV (Phono) -10 dBV (Line) / 47
kOhm
• 19” rackmountable DJ mixer with connections for multiple
turntables, CD players and microphones
Mic Inputs
2 (1/4”), 1 (XLR) -50 dBV / 2.4 kOhm
2 (1/4”) Balanced/ (RCA) unbalanced,
+4 dBu balanced / -10 dBV unbalanced
2 (RCA) unbalanced / -10 dBV
Master Outputs
• 4-channel design with assignable crossfader for mixing a variety
of sources
Zone Output
• Individual gain control per channel with clip LED for setting
optimum levels
Booth Output
2 (RCA) unbalanced / -10 dBV
Record Output
Headphone Output
2 (RCA) unbalanced / -10 dBV
• Easy monitoring via PFL switches and headphone mix with
Split Cue and Cue Pan functions.
1 (1/4 inch), 1 (1/8 inch) greater than 32 Ohm load
• Fader Start buttons for controlling compatible CD players like
Stanton S-Series
Dimensions (LxWxD)
Weight
18.9 in. x 8.66 in. x 4.72 in. (48 cm. x 22 cm. x 12
cm.)
4.5 kg (9.9 lbs)
• Dual 7-band Master EQ for tweaking mixes to suit different venues
• Mic inputs 1 and 2 feature 2-band EQ and handy Talkover function
• Individual outputs and level control for Master, Zone and Booth
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Making Connections
Application Example
Are you ready to get on the 1’s and 2’s? Let’s make sure you’ve
made all the right connections…
This is a typical setup you’ll find in many nightclubs: 2 turntables, 2
CD players, plus a microphone for the DJ. Here’s how you would set
up your equipment with the RM-22:
1. Be sure all equipment is powered “OFF” and all of the
RM-22’s Channel faders and Level knobs are at minimum
volume.
2. Connect the turntables to the Phono inputs of Channels 1
and 2. Be sure the rear-panel toggle switch for Channel 2 is set to
“PH2” or you won’t hear anything. To avoid hum, don’t forget to
connect the ground wires to the grounding terminals.
Mic 2
Here you can connect a microphone using a 1/4-inch cable. If you
have an XLR-type cable, use the Mic 1 input located on the front
panel.
3. Connect the CD players to the Line 4 and 5 inputs of Channels 3
and 4.
4. Depending on the type of cable you have, connect your
microphone to the Mic 1 or Mic 2 input.
Channel
This channel offers two Line inputs for connecting CD/MD players, or
the audio output of a DVD player or VCR. A Phono input is also
provided for connecting a turntable.
5. Connect the Master Output jacks to the club’s power amp, EQ or
crossover. Then connect your monitor amp to the Booth output. If
you have a separate amp for a particular area of the club, connect
this amp to the Zone outputs.
Channel 2/3
6. Set the Input Selectors on the front panel to the appropriate inputs
for each channel.
For each channel, you can connect either two Line inputs or one
Line input and a turntable, depending on the position of the
push-switch. These channels also feature a Fader Start function.
Connect the Fader Start cable (provided with any Fader Start
equipped CD player) to the remote input on your CD player.
7. Power everything up and carefully adjust the input levels using the
Input Gain knobs and Mic Level knob.
8. If you want to use the crossfader, set Channels 1 and 3 to “A” and
Channels 2 and 4 to “B”. Otherwise, set them all to “Bypass”.
Channel 4
9. If your CD players support Fader Start, connect the mini-cables
and set the Fader Start switches to “ON”.
This channel provides connections for three Line inputs or two Line
inputs and a microphone, depending on the position of the
push-switch.
10. Slowly raise the Channel faders, Master fader, Booth level, Zone
level and Mic level as appropriate and start mixing!
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Description of Function
Making Connections
16. Input Selector switches: Use these to choose between the
Outputs
Phono, Line and Mic inputs.
Use the REC output to connect a stand-alone CD recorder, DAT
recorder, or tape deck. Use the BOOTH output to connect directly to
powered monitors or your monitor amp. The ZONE output can be
used if you need separate level control for a particular area of your
club, such as lounge vs. dance floor.
17. Talkover switch: Switch this to the “ON” position to enable
Microphones 1 and 2. When moved to the “Talkover” position,
the music is lowered by a preset amount when the mic is in use.
18. Mic Level knobs: Use these to adjust the levels for Microphones
1 and 2. Note that the Talkover switch must be set to “ON” to
hear the microphones.
Master
These outputs are for connecting your main power amp, EQ,
crossover, etc. Both RCA and 1/4-inch jacks are provided. Using the
Master Output Trim control, you can adjust the overall level being
sent from the outputs—great when an additional boost or cut is
needed.
19. Microphone EQ knobs: Adjust the Hi and Low frequencies of Mic
1 and 2 by +/- 12dB.
20. Mic 1 input: Connect a microphone here using an XLR cable.
21. EQ On switch: Enables or disables the dual 7-band equalizer.
Power Adapter Inlet
22. Equalizer: A dual 7-band EQ for the Master output. Use this to
“tune” your mix to different venues, or to adjust the overall
tonality of your mixes.
Connect the RM-22’s power supply here. Screw to the right, unscrew
to the left. You knew that, didn’t you?
Ground Terminals
23. Output Level meter: Displays the overall signal level of the
Master output. Can also display levels for the Zone output when
the Zone Meter switch (2) is enabled.
Connect the grounding cables from your turntables here to avoid
hum.
SUPERIOR SOUND TECHNOLOGY
The audio quality of the SMX-301 is nothing short of revolutionary for
DJ mixers in it’s price class. The SMX-301 was designed by
Stanton’s new product development team, seasoned audio
professionals who have designed world class professional recording
studio and broadcast mixers and product managers who are working
DJs and work closely with some of the world’s most
respected DJs. They have taken their knowledge and
experience to create the SMX-301, a DJ mixer with
superior audio quality and unprecedented value.
Come hear the difference!
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Description of Function
Description of Function
At this point, you’re pretty much ready to start mixing. So if you’re a
know-it-all, or you’re just one of those people who like to learn by
trial-and-error, you are free to throw down. But if you wanna go for
the gold and get your pilot’s license, take a moment and learn what
each of the RM-22’s front-panel controls are about.
6. Headphone outputs: Connect up to two pairs of stereo
headphones using 1/4-inch and 1/8-inch jacks.
7. Cue Pan slider: This adjusts the relative headphone balance
between the Cue mix (PFL) and Master output (PGM).
22
8. Fader Start switch: Lets you automatically start a CD player from
the cue point by moving the crossfader (requires a compatible CD
player like the Stanton S-Series).
2
15 16 22 23
11
21
20
1
9. Crossfader: Creates a gradual fade between two channels, as
determined by the Crossfader Source selectors (14). Essential for
scratching and smooth house mixing.
4
19
3a
5
3b
10. Master fader: Adjusts the overall level of the Master output
signal.
14
13
12
18
8
9
14
10
17
8
7
6
11. Master Stereo/Mono toggle switch: Selects whether the Master
output will be stereo or summed to mono.
1. Power switch: Turns the power “On” or “Off”.
12. PFL switch: Push this to assign the channel to the Cue mix in
headphones. (Pop quiz: Do you know what “PFL” stands for?
Answer: “Pre-Fader Level.” In other words, the Channel fader
does not affect the level you hear in the headphone cue mix.)
2. Zone Meter switch: Press this when you want the Output Level
meter (23) to display the Zone output instead of the Master output.
3a. Zone Level knob: Adjusts the level being sent to the Zone
outputs (i.e. monitors).
13. Channel fader: Controls the input channel level.
3b. Booth Level knob: Adjusts the level being sent to the Booth
14. Crossfader Source selectors: These select whether the input
channel is assigned to the left side (A) or right side (B) of the
crossfader. Select “BYPASS” if you don’t want the channel
assigned to the crossfader at all.
outputs (i.e. monitors).
4. Cue Level knob: Adjusts the cue level being sent to the
Headphone outputs. Keep this at a reasonable level to avoid
hearing loss.
15. Input Gain knobs: Use these to adjust the level of inputs. For
optimum signal-to-noise, raise the knob until the “max” LED
lights occasionally. (usually around the 2 o’clock position)
5. Cue Stereo/ Split toggle switch: Select whether you prefer to
hear the Cue mix and Master output in stereo, or split with the
Cue mix on one side and the Master on the other.
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