Stanton Musical Instrument RM 402 User Manual

RM.402  
Professional DJ Mixer  
OWNER’S MANUAL  
STANTON MAGNETICS, Inc.  
© 2004 Stanton Magnetics, Inc.  
 
Welcome  
Congratulations on your choice of the Stanton RM.402 Professional  
DJ Mixer. You now own one of the most flexible DJ mixers ever  
designed. The rackmountable RM.402 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.  
Please take a moment to familiarize yourself with the RM.402 by  
reading through this Owner’s Manual. (And don’t worry—we’ll make it  
quick so you can start mixing!)  
RM.402 Features  
The RM.402 is an extremely versatile mixer with enough inputs to  
accommodate many DJ setups including multiple turntables, CD play-  
ers and microphones. Below we list some of the RM.402’s most salient  
features (in case you forgot already!):  
• 19” rackmountable DJ mixer with connections for multiple  
turntables, CD players and microphones  
• 4-channel design with assignable crossfader for mixing a variety  
of sources  
• Individual gain control per channel with clip LED for setting  
optimum levels  
• Easy monitoring via PFL switches and headphone mix with  
Split Cue and Cue Pan functions.  
• Fader Start buttons for controlling compatible CD players like  
Stanton S-Series  
• 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  
 
Making Connections  
Are you ready to get on the 1’s and 2’s? Let’s make sure you’ve made  
all the right connections…  
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.  
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.  
Channel 2/3  
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.  
Channel 4  
This channel provides connections for three Line inputs or two Line  
inputs and a microphone, depending on the position of the  
push-switch.  
 
Making Connections  
Outputs  
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.  
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.  
Power Adapter Inlet  
Connect the RM.402’s power supply here. Screw to the right, unscrew  
to the left. You knew that, didn’t you?  
Ground Terminals  
Connect the grounding cables from your turntables here to avoid hum.  
 
Description of Functions  
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.402’s front-panel controls are about.  
22  
2
15 16 22 23  
11  
21  
20  
1
4
19  
3a  
5
3b  
14  
13  
12  
18  
17  
8
9
14  
10  
8
7
6
1. Power switch: Turns the power “On” or “Off”.  
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).  
3b. Booth Level knob: Adjusts the level being sent to the Booth  
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.  
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.  
 
Description of Functions  
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).  
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).  
9. Crossfader: Creates a gradual fade between two channels, as  
determined by the Crossfader Source selectors (14). Essential for  
scratching and smooth house mixing.  
10. Master fader: Adjusts the overall level of the Master output  
signal.  
11. Master Stereo/Mono toggle switch: Selects whether the Master  
output will be stereo or summed to mono.  
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.)  
13. Channel fader: Controls the input channel level.  
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.  
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).  
 
Description of Functions  
16. Input Selector switches: Use these to choose between the  
Phono, Line and Mic inputs.  
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.  
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.  
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.  
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.  
SUPERIOR SOUND TECHNOLOGY  
The audio quality of the RM.402 is nothing short of revolutionary for DJ  
mixers in its price class. The RM.402 was designed by Stanton’s new  
product development team, seasoned audio professionals who have  
designed world class professional recording studio and broadcast mix-  
ers and product managers who are working DJs and work closely with  
some of the world’s most respected DJs. They have taken their knowl-  
edge and experience to create the RM.402, a DJ mixer with superior  
audio quality and unprecedented value. Come hear the difference!  
 
Application Example  
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.402:  
1. Be sure all equipment is powered “OFF” and all of the  
RM.402’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.  
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.  
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.  
6. Set the Input Selectors on the front panel to the appropriate inputs  
for each channel.  
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”.  
9. If your CD players support Fader Start, connect the mini-cables  
and set the Fader Start switches to “ON”.  
10. Slowly raise the Channel faders, Master fader, Booth level, Zone  
level and Mic level as appropriate and start mixing!  
 
Technical Specifications  
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  
> 109 dB (main signal path)  
-98 dBV (Line input to any output)  
Crosstalk  
(Line to Line, Phono to  
Line, Line to Phono)  
Fader Kill  
> -90 dB  
> -90 dB  
Microphone EQ  
Graphic EQ (7 band  
stereo)  
Hi, Low +12 dB  
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  
Line Inputs  
Phono Inputs  
Phono / CD  
2 (RCA), -50 dBV (Phono) -10 dBV (Line) / 47  
kOhm  
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  
Zone Output  
Booth Output  
2 (RCA) unbalanced / -10 dBV  
Record Output  
Headphone Output  
2 (RCA) unbalanced / -10 dBV  
1 (1/4 inch), 1 (1/8 inch) greater than 32 Ohm load  
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)  
 
Troubleshooting  
Problem / Symptom  
No Sound  
Possible Cause/ Solution  
Is the power on? Check the power switch.Make  
sure the channels are assigned properly to the  
crossfaders. Make sure INPUT GAIN, is turned  
up and output level control is turned up.  
Depending on the input, check the rear panel  
selector switches. Check the top panel channel  
selector switches.  
No Sound- Master  
Output (Booth and  
Zone are OK)  
Make sure that MASTER TRIM on the rear  
panel is turned up.  
Do the headphones work with the CUE pan in  
the PROGRAM position but not PFL? If so,  
make sure that the channel PFL switches are  
engaged. Check the CUE LEVEL control.  
No Sound  
Headphones  
Signal level is low  
even with the  
faders and input  
level controls  
turned up.  
Check to make sure the talkback switch is NOT  
engaged on the microphone input. Check the  
EQ sliders.  
Check to make sure that the microphone levels  
are turned all of the way down if a microphone  
is not being used.  
Mixer sounds noisy  
Is the Mic gain turned up? Does the microphone  
require phantom power? This mixer does not  
provide microphone phantom power.  
Microphone doesn’t  
work  
In general, turn down the INPUT GAIN  
CONTROL. The input signal may be too loud for  
the input gain control setting that you were using.  
Is the EQ on? Turn off the EQ. If the distortion  
goes away, then you need to turn down the  
INPUT GAIN CONTROL.  
Sound is distorted-  
Line or CD input  
 
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  
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  
 

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