Arrakis Systems MARC-15 Manuel Page 37
- Page / 82
- Table des matières
- MARQUE LIVRES
Noté. / 5. Basé sur avis des utilisateurs
I N S TA L L A TI O N I N S T R U C TI O N S
Monitor amp & Speaker Wiring
The console has a balanced, line level monitor audio output that is designed to connect to an external audio power amplifier.
The console output will not directly drive speakers.
Connect the audio amplifier input to the console Monitor Output on the back of the output module as shown below. Follow the
amplifier’s instructions and connect speakers to the amplifier. Set the volume control on the monitor amplifier to 1/2. Once a source
is connected to the console, test the monitor amp. The audio through the monitor speakers should be clear and without significant
noise or hum.
WARNING- do NOT have all levels controls at maximum. Too much audio level through your speakers can damage the speakers.
Connect an
audio power
amp and
speakers
to the MON
output of
the console
Audio power amp
4.9
Main Console Outputs
Monitor Inputs and Outputs
Output Module (MARC-OB)
1
2
3
4
5
6
7
8
Left (+) out
Left (-) out
Right (+) out
Ground
nc
Right (-) out
nc
nc
Monitor Output
1
2
3
4
5
6
7
8
Left (+) out
Left (-) out
Right (+) out
Ground
nc
Right (-) out
Cue out to amp
nc
Earphone Output
1
2
3
4
5
6
7
8
Left (+) in
Left (-) in
Right (+) in
Ground
nc
Right (-) in
Left -10dBu input
Right -10dBu input
External Monitor In
1
2
3
4
5
6
7
8
Mute Relay
Mute Relay
Cue Input (-10dBu)
nc
Talkback (12V)
Talkback (logic)
(+) Talkback in
(-) Talkback in
Miscellaneous IO
HUM OR NOISE IN THE MONITOR SPEAKERS
It is possible to get hum with only the monitor amp itself connected to
the console. This is not a problem with the console. It is caused by a
ground loop between the monitor amp and the console power.
A ground loop is created whenever there are two or more ground
paths between two pieces of equipment. This creates a large loop
antenna which detects 60 cycle AC as a hum. Be certain to place both
pieces of equipment on the same AC power strip. If hum persists, then
it is in the audio wiring. Shield grounds connected at both ends of the
cable often are the second ground path. The shield should be grounded
at one end only. To find a ground loop, unplug audio cables one at a
time until the hum goes away. Once the offending cable is isolated,
examine the wiring to find how the loop is being created. Break the
loop.
TOP REAR VIEW OF THE OUTPUT MODULE
- Technical Manual 1
- Broadcast Console 1
- I N T R O D U C TI O N 2
- S A F E TY 3
- Hazard / Warning Label 4
- Identification 4
- Warranty 5
- Table of Contents 7
- DESCRIPTION 8
- Product Description 9
- The modular mainframe 10
- Output Timer 11
- Software features 12
- Technical features 13
- Electronic Specifications 14
- 37 1/2" 15
- INSTRUCTIONS 16
- OPERATING 16
- Basic Operation 17
- Mono mic level Input Modules 18
- The PC-USB input Module 20
- The Telephone Input Module 21
- CUE SPEAKER 24
- CUE LEVEL 24
- Arrakis Systems inc 25
- Program Audition Utility 25
- The VU meters 26
- INSTALLATION 27
- Basic Description 28
- Unpacking 29
- Before you start 30
- The Mainframe 32
- Power Supply 33
- 1,2,3,4,5,6,7,8 34
- Grounding 35
- Grounding (continued) 36
- Earphone Output 37
- External Monitor In 37
- Miscellaneous IO 37
- Headphone Wiring 38
- External Monitor Input Wiring 39
- On Air Light Wiring 40
- Talkback (intercom) Wiring 41
- Program Output Wiring 42
- Logic ‘B’ ‘A’ 43
- Source Control Logic 44
- 4) PC USB module (MARC-USB) 45
- Logic Out In 46
- MUTE LOGIC 47
- PC Setup 48
- The ARC-16SW 49
- PC Control 49
- PC Configuration 49
- ARC-16SW Software 50
- SWITCHER WIRING 51
- Basic Calibration 52
- Output Bd Calibration 53
- Input board Jumper Setup 54
- INPUT OUTPUT WIRING SUMMARY 55
- Main Console Outputs 56
- Monitor Inputs and Outputs 56
- 13.0 Analog Audio Wiring 57
- Source into a Balanced Source 59
- Ground Loops 62
- Ground Loops (continued) 63
- DHD-LIVE FOR 64
- THE MARC CONSOLE 64
- Getting Started 65
- SERVICE & MAINTENANCE 66
- General Repair Considerations 67
- Opening the Console 68
- Removing an Input Module 69
- Removing the Output Module 71
- Replacing Rotary Faders 72
- Replacing Slide Faders 72
- Replacing ICs 73
- Electronic Block Diagram 74
- Mic Module 75
- Stereo Line Module 76
- PC-USB module 77
- Phone Module 78
- Studio Monitor Module 79
- Output Module 80
- Factory Service 81
- Factory Service (continued) 82
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