Toa M-633D Operating Instructions Manual Download Page 24

24

14. INSTALLATION

14.1. Mounting in a Rack

Mount the unit in an equipment rack using the supplied rack mounting screws.

Rack mouting screw 5 x 12 with washer
(supplied*)

Rack mouting bracket

M-633D

(supplied)

Machine screw M3 x 8

* Not supplied with the unit of US version (M-633D CU).

(supplied)

1

2

Step1.

Attach the rack mounting brackets to the unit's sides.

Step2.

Mount the unit in a rack.

13. RESETTING TO FACTORY DEFAULT SETTINGS

Step 1.

Disable the ARC function. (See p. 20.)

Step 2.

Disable the FBS function. (See p. 21.)

Step 3.

Turns off the Automatic mute function.
Shift the rear-mounted AUTO MUTE switch to the OFF position.

Step 4.

Disable the ACG function
Shift all the Input sensitivity selector switches of the rear-mounted MONO IN 1 – 6 to the "LINE" 
position.

3

4

The settings are returned to the factory default settings.

Summary of Contents for M-633D

Page 1: ...ATING INSTRUCTIONS DIGITAL STEREO MIXER M 633D Thank you for purchasing TOA s Digital Stereo Mixer Please carefully follow the instructions in this manual to ensure long trouble free use of your equip...

Page 2: ...nt 19 9 5 Disabling the ARC Function 20 10 SETTING THE FBS FUNCTION 10 1 What is the Feedback Suppressor Function FBS 21 10 2 Setting the FBS Function 21 11 SETTING THE AUTOMATIC MUTE FUNCTION 11 1 Wh...

Page 3: ...to your outlet consult an electrician for replacement of the obsolete outlet Protect the power cord from being walked on or pinched particularly at plugs convenience receptacles and the point where th...

Page 4: ...ctric shock never open nor remove the unit case as there are high voltage components inside the unit Refer all servicing to qualified service personnel Do not place cups bowls or other containers of l...

Page 5: ...use the AC outlet with current capacity allowable to the unit Every version except the M 633D CU for US The supplied rack mounting screws can be used for the TOA equipment rack only Do not use them fo...

Page 6: ...naural input signal Automatic Mute function Input sensitivity switchable to either 10 dB or 46 dB for the monaural inputs The monaural inputs capable of supplying phantom power 24 V 10 mA Assignment s...

Page 7: ...l knobs Adjust the stereo input levels 8 ARC operation indicator Lights green when the ARC function is operating 9 Monaural output level control knobs Adjust the monaural output levels 10 Stereo outpu...

Page 8: ...nal Hum noise may be generated when external equipment is connected to the unit Connecting this terminal to the functional ground terminal of the external equipment may reduce the hum noise Note This...

Page 9: ...UT 2 output and switch ST to the STEREO OUT output Input signals assigned to the same output destination are mixed Assignment setting example The figures below show an example of assignment settings o...

Page 10: ...y Input Output L R L R Output Input L R L R When the summing output key is not pressed in ST position The L channel s input signal is output to the stereo L channel output and the R channel s input si...

Page 11: ...old down the ARC switch for 3 seconds then release it when the ARC operation indicator begins to flash The ARC measurement starts The ARC filter is set when the measurement has finished enabling the A...

Page 12: ...ut levels Conduct ARC measurement ARC function is enabled Install the microphone Set the output channel and output level See Step 1 on p 13 See Steps 2 and 3 on p 14 See Steps 4 and 5 on p 15 See Step...

Page 13: ...alize the ARC filter disable the ARC function See p 20 The ARC filters for all the output channels are initialized They cannot be initialized individually Use a fine tipped screwdriver to press in the...

Page 14: ...enser microphone PHANTOM Wireless tuner output Line level LINE Step 3 Check to see if the microphone works correctly 3 1 Speak into the microphone Confirm that the MONO 1 s input level indicator light...

Page 15: ...ponding to the output channel to which the ARC filter is set Step 5 Set the output volume level 5 1 Turn the output level control knob corresponding to the assignment switch selected in Step 4 to the...

Page 16: ...out the center of the room Height of the microphone At the listening position Angle of the microphone 45 up Location of the microphone About the center of the room See the figure below Direction of th...

Page 17: ...C operation indicator flashes slowly during normal measurement but it begins to flash rapidly when a failure occurs ARC Switch ARC operation indicator Flashes during the measurement Measurement in pro...

Page 18: ...noise When the ARC operation indicator flashes rapidly Perform the following reset operation if these errors occurred 1 Stop the measurement by pressing the ARC switch The ARC indicator stops flashin...

Page 19: ...l knob to the 12 o clock position 1 2 Press in only the MONO 1 s Assignment switch 1 to turn it ON 1 ON 2 OFF ST OFF 1 3 Turn the MONO 1 s output level control knob to the 12 o clock position 1 4 Adju...

Page 20: ...he volume level of the output amplifier connected to the STEREO OUT 2 4 Conduct ARC measurement See Step 7 on p 17 The ARC filter is assigned to the STEREO OUT channel Different ARC filter settings ar...

Page 21: ...FBS function is enabled Notes Feedback may not be suppressed as the case may be In this case decrease the corresponding channel s monaural input level by turning the control knob counterclockwise Feed...

Page 22: ...naural input signal Mute level Level Time Relesse time Announcement ends Announcement starts About 2 seconds 30 dB dB Tip A release time is the period of time from the announcement end to the stereo s...

Page 23: ...its sound distorted even if a line level signal is erroneously applied to the MONO IN input set to MIC The ACG function operates on each channel with the input sensitivity selector switch placed in MI...

Page 24: ...he rack mounting brackets to the unit s sides Step2 Mount the unit in a rack 13 RESETTING TO FACTORY DEFAULT SETTINGS Step 1 Disable the ARC function See p 20 Step 2 Disable the FBS function See p 21...

Page 25: ...block the ventilation slots on the unit s sides and rear Doing so may cause heat to build up inside the unit and result in fire CAUTION Rubber foot supplied M 633D bottom surface 14 2 Mounting on a De...

Page 26: ...2 Phantom Power Supply Set the rear mounted Input level selector switch to PHANTOM position only when connecting a microphone which requires phantom power 24 V 10 mA to the corresponding input termin...

Page 27: ...ewdriver with blade that is 3 mm 0 12 in width 15 3 Removable Terminal Plug Connection Notes Be sure to use shielded cables for audio signal lines Avoid soldering cable conductor as contact resistance...

Page 28: ...MONO FBS FBS FBS FBS FBS FBS A D A D A D A D A D A D A D A D A D A D A D A D MONO IN 1 MONO IN 2 MONO IN 3 MONO IN 4 MONO IN 5 MONO IN 6 STEREO IN 1 STEREO IN 2 STEREO IN 3 Clipping level 12 dB LINE...

Page 29: ...RC ARC ARC D A D A D A D A D A D A REC OUT 10 dB STEREO 0 dB LINE 0 dB 0 dB 1 V MONO OUT 1 MONO OUT 2 ST OUT L ST OUT R REC OUT L REC OUT R dB 20 10 0 10 20 30 40 50 60 10 dB 10 dB 0 dB 0 dB 0 dB 0 dB...

Page 30: ...30 Front Rear Side 483 6 19 04 6 M3 20 0 79 20 0 79 22 0 87 31 8 1 25 44 1 73 46 8 1 84 320 12 6 341 3 13 44 466 18 35 420 16 54 Unit mm in 17 DIMENSIONAL DIAGRAM...

Page 31: ...ssing Automatic Resonance 3 output channels each monaural output channel stereo output L R Control Function ARC independent settings for each channel automatic creation of EQ curves for sound field co...

Page 32: ...energy and if not installed and used in accordance with the instruction manual may cause harmful interference to radio communications Operation of this equipment in a residential area is likely to cau...

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