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ART48-MASTER X

COMBINING MASTER MODULES (MASTER X and L/R MASTER)

A standard mixer used for live and recording applications only needs one master L/R for connection 

to a PA system, or a recording device etc. There are however numerous situations in which more than 

one L/R output is not only useful, but essential. 

The Arthur concept, which offers total flexibility, enables the combination of a quasi-infinite number 

of outputs. In a hotel audio installation for example, a microphone and a stereo input might be 

sufficient for inputting the sound source, but more outputs would be needed for it to be independently 

controllable in different areas such as the bar, restaurant or hotel lobby. Another example could be 

a “splitter mixer” for audio demonstration, requiring only one stereo input module (for the audio 

source), but numerous master modules for sending the music signal to different loudspeakers for A/B 

comparison. Even on a standard mixer, a second master output could be helpful for controlling a 

subsidiary part of the PA system, or side fills for example. 

The mixer’s structure only allows for one summing amp, which will sum all L and R signals coming from 

the BUS. The Master X unit features a white switch - positioned on the circuit board - to deactivate 

that summing function. If you are using more than one master module, only one of these should be 

left with its default setting (i.e. with summing on); all the other master modules must have both the 

blue and white switch depressed. 

Note: If you want to position an Arthur SPRING reverb to the right of the Master (forming the final 

unit on the right of the mixer as many users prefer), you must first deactivate the summing amp on 

the Master X. Do this by depressing the blue button on the Master X circuit board.

Spring on the left 

side of the Master

Spring on the right 

side of the Master

Multiple Masters 

setup

SPRIN

G

SPRIN

G

MAS

TER X

MAS

TER X

MAS

TER X

ADDITION

AL

L/R MAS

TER

ADDITION

AL

L/R MAS

TER

Released

Depressed

Summary of Contents for ARTHUR ART48-MASTER

Page 1: ...ACOUSTIC FIDELITY arthur FORMAT48 MASTER X USER MANUAL V1 ...

Page 2: ...lectrical equipment so please note the following On a product a lightning flash within a triangle indicates the presence of uninsulated dangerous voltage within the product enclosure This may be of sufficient magnitude to cause risk of electric shock ELECTRICAL SAFETY This information applies to all modules and power supplies that form your ARTHUR mixer Before connecting your mixer to the mains ma...

Page 3: ... your mixer near power transformers TV sets RF transmitters electric motors or any other sources of electrical energy To avoid potential accidents only use attachments accessories and other equipment such as carts stands tripods brackets or cases that are specified or recommended by the manufacturer or sold with your mixer Loud volume levels can cause irreparable damage to hearing so avoid the fol...

Page 4: ...below 7 AUX XLR output connectors and 8 Selector buttons From these AUX outputs signal is sent to external effects or stage monitors You can choose which AUX signal is seen on the VU meter by selecting the relevant AUX to phones and ART48 MASTER X AUX meter button These buttons are also used to select which AUX signal can be sent to the Phones output see 9 below This enables more than one AUX sign...

Page 5: ...ever to avoid any possible ground loop noises the GND LIFT button ART48 MASTER X disconnects the ground from all audio output ground connector contacts XLR and jacks If you have customized your Master X with transformers on the outputs see the section on Customization it is better to always keep the ground connection lifted in order to get the most noiseless audio signal CUSTOMIZATION Thanks to it...

Page 6: ... loudspeakers for A B comparison Even on a standard mixer a second master output could be helpful for controlling a subsidiary part of the PA system or side fills for example The mixer s structure only allows for one summing amp which will sum all L and R signals coming from the BUS The Master X unit features a white switch positioned on the circuit board to deactivate that summing function If you...

Page 7: ...ART48 MASTER X SIGNAL FLOW TECHNICAL INFORMATION ...

Page 8: ...on THD N 1 kHz 30 dBu input level 0 dBu output level PFL balanced 1 4 jack output Output impedance Maximum output level Maximum Gain Frequency response 3 dB Distortion THD N 1 kHz 30 dBu input level 0 dBu output level With transformer 150 ohm 30 dBu 10 Hz 50 kHz 0 075 Total 0 08 2nd harm 0 005 3rd harm 0 0008 4th harm 0 001 5th harm 180 ohm 30 dBu 10 dB 10 Hz 50 kHz 0 05 180 ohm 24 dBu 9 dB 10 Hz ...

Page 9: ...u input level 0 dBu output level Power consumption Size weight Optional Transformers Lundahl Turns ratio No load impedance Frequency response 10 dBu 6 ohm 14 5 dBu 9 dB 10 Hz 55 kHz 0 05 380 mA Transformerless 460 mA Full transformers 143x58x475mm 1 65 kg Transformerless 2 4 kg Full Transformers 1 1 1 1 700 ohm 50 Hz 20 dBU 20 Hz 80 kHz 0 3 dB ...

Page 10: ...NOTES ...

Page 11: ...applicable here TRADEMARKS The SCHERTLER name and logo are registered trade names trademarks of SCHERTLER S A Switzerland All SCHERTLER products use proprietary technology and are covered by one or more worldwide patents DISCLAIMER All information and technical specifications published here are based on data that was available at the time of publication Schertler is however constantly aiming to im...

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