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9

M/S Master

Rear Panel

Connections

Signal Connections 

Turn off the unit before connecting or disconnecting any cable or equipment to it. Otherwise 
you risk the possibility of damaging your ears or equipment.

Input and Output Electronics

The input and output electronics of the M/S Master possesses two very distinctive features:

1.  Bridge circuits that keep the signal flow constant, regardless of malfunctioning equip-

ment and power outages (power fail safety by relay hard bypasses).

2.  External processors connected to the INSERTs can be used for A/B stereo processing 

without the need of any recabling.

The bridge and insert circuits rely on high-quality relays. Contact surfaces are gold-plated to 
provide better conductivity and encapsulated to avoid external influences due to climate or 
atmospheric conditions. 

Power fail safety is only provided under two conditions:

1.  If the M/S Master is operated in single mode without processors at its inserts, the insert 

send/return sockets have to be bridged with XLR patch cables.

2.  If the M/S Master is operated together with inserted processors, the inserted processors 

must have relay hard bypasses, too. Otherwise these machines can break off the 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 channel‘s path. The INSERT SEND outputs the signal to the external processor; 
the processed signal is then input back through the INSERT RETURN.

IMPORTANT: If there are no processors closing the loop, the inserts have to be bridged with 
XLR patch cables. Use the shortest cables possible.

You can make a loop with one or more processors and you can even use a patchbay if needed.

IMPORTANT: Cabling does not need to be changed in order to use processors connected to 
the M/S Master for L/R stereo processing.

Simply disengage the ACTIVE push button on the front panel or turn off the M/S Master to 
use  the  processors  as  you usually  would.  Thus,  the  stereo signal  is not  M/S  encoded  but 
forwarded directly to the connected processors.

NOTE: The VU-meters drop considerably when you disengage the ACTIVE push button while 
the MID INSERT and SIDE INSERT push buttons are engaged. If the INSERT push buttons are 
not engaged, the VU-meter remains active. This applies to all VU-meter modes and is based 
on the complex relay circuits of the inputs, outputs, insert points, and L/R and M/S encoding. 
Considering that the push button setting described does not correspond to an actual work 
function, it can be neglected.

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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