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10

M/S Master

Rear Panel

Connections

XLR sockets

All signal connections are made via balanced XLR connectors. Inputs are always female and 
accept male connectors; outputs are always male. All in all, a very comprehensible principle.

Balanced connections

It is impossible to exclude interferences when a single audio signal is transmitted. Shielding 
is  effective  against  electric,  but  not  against  electromagnetic  influences.  Motors,  transfor-
mers, and alternating current can always induce interferences. But even if the transmission 
would succeed, differences in ground potentials between driver and receiver would produce 
disturbances.

In balanced connections a reference signal with reversed polarity is transmitted additionally 
to the audio signal through a second wire. The ground signal is routed separately through 
a third wire. Input and output stages are drivers and receivers, and the receiving stage can 
suppress interferences by subtracting the difference between audio and reference signal. 

Unbalanced connections

Unbalanced connections from and to RCA or 1/4“ TS sockets can be made without adaptors to 
the balanced XLR sockets. The correct wiring is important. The diagram shows the pin confi-
guration of the XLR sockets and how to correctly connect them for unbalanced connections: 

Connections to RCA sockets are always unbalanced, a wiring to jack connectors can be both 
balanced (1/4“ TRS/stereo jack) or unbalanced (1/4“ TS/mono jack). We recommend to use 
individually configured cables from XLR to RCA or jack sockets instead of adaptors. You can 
get  cables  in  any  needed  configuration  from  audio  dealers.  With  the  diagram  above,  the 
dealer can ensure to provide the appropriate cable for your application.

Power connection and fuse

Connect the power cord to the rear MAINS INPUT socket. Transformer, power cord and case 
connection conform to VDE, UL and CSA requirements. 

The fuse is accessible from outside and placed right behind the flap right from the socket. 
Fuse ratings are 315 mA slow blow (230 volts) or 630 mA slow blow (115 volts). 

Input

Output

balanced

unbalanced

balanced

unbalanced

1=GND
2=hot (+)
3=cold (-)

1

2

3

1

2

3

1

2

3

1

2

3

0

I

0

I

Summary of Contents for M/S Master 1020

Page 1: ...3 2 1 0 1 2 3 4 5 6 7 8 9 1 0 1 0 9 8 7 6 5 4 3 2 1 0 1 2 3 4 5 6 7 8 9 1 0 Model 1020 M S Master LEVEL STEREO WIDTH OUTPUT L E FT 1 6 1 5 1 4 1 3 10 8 5 2 0 2 3 4 dB INSERT MUTE ACTIVE Mid Side M I...

Page 2: ...2163 983 420 E Mail info spl info Internet spl info The construction of the MS Master Model 1020 is in compliance with the stan dards and regulations of the European Community Notes on Environmental...

Page 3: ...9 XLR sockets Balanced connections Unbalanced connections Power connection and fuse 10 Voltage Selector Power switch GND Lift 11 Operation 11 Overview ACTIVE 11 Control Elements 12 Input settings BAL...

Page 4: ...r example near a wash basin or bath in a damp cellar near swimming pools or the like In such cases there is an extremely high risk of fatal electrical shocks Insertion of foreign objects or fluids Nev...

Page 5: ...ing the power cord Replacement substitute parts Be sure that any service technician uses original replacement parts or those with identical specifications as the originals Incorrectly substituted part...

Page 6: ...me differences Due to the advantages and disadvantages that each tech nique provides more often than not they are combined during production to achieve L R play back While there are several stereo tec...

Page 7: ...Master allows you to directly correct the balance in the mid frequency range and improve the depth and transparency of stringed instruments Thanks to the inserts you can also use filters and effects c...

Page 8: ...TRIQUE NE PAS OUVRIR RISK OF ELECTRIC SHOCK D O N O T O P E N C A U T I O N For unbalanced operation connect Pin 3 to GND Pin 1 SERIAL No VOLTAGE FUSE GND LIFT GND LIFT GND 0 I Make sure that the volt...

Page 9: ...signal flow also refer to the next chapter MID INSERT SIDE INSERT MID INSERT SIDE INSERT Both MID and SIDE channels have insert points that enable you to integrate external proces sors in each channe...

Page 10: ...dio and reference signal Unbalanced connections Unbalanced connections from and to RCA or 1 4 TS sockets can be made without adaptors to the balanced XLR sockets The correct wiring is important The di...

Page 11: ...adjust the balance of Mid signals in the stereo panorama and their level 2 In the SIDE section you define the stereo width and apply filters as well as other func tions to the signal 3 In the OUTPUT...

Page 12: ...ou ought to consider minor tolerances and compensate if needed The M S Master was not conceived to provide a perfect comparison between L R and M S encoding Its primary goal is individual processing o...

Page 13: ...d always ponder if it is more appropriate to decrease one or increase the other For example to expand the stereo image without losing mono compatibility the most convenient would be to increase the ST...

Page 14: ...ans that the filter processes all frequencies below 2 2 kHz FILTER OFF Use this push button to disengage the filter By disengaging the filter the processing is done solely on the Side signal encoded d...

Page 15: ...right 2 the stereo image is 200 wider As you turn the control to the left the Side signal is made smaller When set hard left the Side signal is muted Adjustment of the STEREO WIDTH should always be m...

Page 16: ...refore provides information on the overall loudness or energy of the signal PPM mode PPM Peak Program Meter indicates peak levels similar to AD converter meters where it is important to control peak l...

Page 17: ...a normal meter ACTIVE Use the ACTIVE push button to switch on or off the processing electronics of the M S Master When switched off input signals are forwarded directly to the outputs The ACTIVE push...

Page 18: ...ents of finished mixes making it easier to increase overall loudness while preserving the dynamic range Let s take for example a pop song that sounds fairly balanced even though the vocals are a bit t...

Page 19: ...ents become more precise and distinguishable Selective EQ can give the Side signal more air making cymbals and harmonic instruments sound more present without adding too much sharpness to vocals Incre...

Page 20: ...put level and unity gain Total harmonic distortion noise 0 007 1 kHz 0 dBu input level and unity gain Signal to noise ratio A weighted 82 dB Dynamik range unweighted 102 dB Power supply Toroidal trans...

Page 21: ...5 4 3 2 1 0 1 2 3 4 5 6 7 8 9 1 0 1 0 9 8 7 6 5 4 3 2 1 0 1 2 3 4 5 6 7 8 9 1 0 Model 1020 M S Master L E V E L S T E R E O W I D T H O U T P U T LE F T 1 6 15 14 13 1 0 8 5 2 0 2 3 4 dB INSERT MUTE A...

Page 22: ...Manual M S Master Model 1020...

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