Altair DA-410, Owner'S Manual

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DISTRIBUTION AMPLIFIER/ZONE MIXER/MIC SPLITTER DA-410.
1. INTRODUCTION ................................................................................................................................................................................. 3
2. SWITCHES, CONTROLS, ADJUSTMENTS AND CONNECTORS ................................................................................................... 4
FRONT PANEL .................................................................................................................................................................................. 4
REAR PANEL ..................................................................................................................................................................................... 5
3. WORKING PRECAUTIONS ............................................................................................................................................................... 6
4. INSTALLATION .................................................................................................................................................................................. 6
UNPACKING .................................................................................................................................................................................... 6
MOUNTING ...................................................................................................................................................................................... 6
CHANGING THE VOLTAGE ............................................................................................................................................................ 6
CHANGING THE FUSE .....................................................................................................................................................................7
CONNECTING TO THE MAINS ....................................................................................................................................................... 8
INPUT CONNECTION ...................................................................................................................................................................... 8
UNBALANCED INPUT: ................................................................................................................................................................ 9
BALANCED INPUT: .....................................................................................................................................................................10
OUTPUT CONNECTION .................................................................................................................................................................10
UNBALANCED OUTPUT:.............................................................................................................................................................11
BALANCED OUTPUT: .................................................................................................................................................................12
GROUND LINK ................................................................................................................................................................................12
5. OPERATION ......................................................................................................................................................................................13
TURN ON DELAY CIRCUIT .............................................................................................................................................................13
SIGNAL AND OVERLOAD INPUT INDICATOR .............................................................................................................................13
INPUT LEVEL CONTROL
.................................................................................................................................................................13
SIGNAL AND OVERLOAD OUTPUT INDICATOR .........................................................................................................................13
OUTPUT LEVEL CONTROL .............................................................................................................................................................14
MONO SIGNAL SWITCH ...............................................................................................................................................................14
INPUT SIGNAL SELECTOR .............................................................................................................................................................14
MONITOR SIGNAL SELECTOR .......................................................................................................................................................14
MONITOR SIGNAL VU-METER ......................................................................................................................................................15
MONITOR LEVEL CONTROL ..........................................................................................................................................................15
HEADPHONES OUTPUT ................................................................................................................................................................15
MINIATURE SPEAKERS
..................................................................................................................................................................15
MIC/LINE INPUT SIGNAL SELECTOR ............................................................................................................................................15
OPERATING LEVEL CHART ............................................................................................................................................................16
6. OPTIONS ...........................................................................................................................................................................................16
INPUT TRANSFORMER (IT-DA) ......................................................................................................................................................16
OUTPUT TRANSFORMER (OT-DA) ...............................................................................................................................................16
EQUALISER CARD (TE-67) .............................................................................................................................................................16
SECURITY COVER (TP-1) ................................................................................................................................................................. 17
KEY LOCKED SECURITY COVER (TS-1) ......................................................................................................................................... 17
7. SPECIAL OPERATIONS .................................................................................................................................................................... 17
INPUT TRANSFORMER (IT-DA) ......................................................................................................................................................19
OUTPUT TRANSFORMER (OT-DA) ...............................................................................................................................................19
EQUALISER CARD .......................................................................................................................................................................... 20
EQUALIZER CARD CONFIGURATION ........................................................................................................................................21
GAIN CALCULATION............................................................................................................................................................21
FILTER FREQUENCY CALCULATION..................................................................................................................................... 22
BANDWIDTH CALCULATION (Q)......................................................................................................................................... 23
GAIN VARIATION ................................................................................................................................................................ 24
NON STANDARD CONFIGURATION EXAMPLES................................................................................................................ 25
PLACING AN EQUALIZER CARD ......................................................................................................................................... 25
LIFTING THE XLR INPUT GROUNDS ........................................................................................................................................... 26
8. BLOCK DIAGRAM AND HOW IT WORKS ................................................................................................................................... 26
9. REPAIR GUIDE ................................................................................................................................................................................. 28
10. APPLICATION EXAMPLES ............................................................................................................................................................ 29
DISTRIBUTION AMPLIFIER APPLICATION EXAMPLE ................................................................................................................. 29
ZONE MIXER APPLICATION EXAMPLE ....................................................................................................................................... 30
MIC SPLITTER APPLICATION EXAMPLE .......................................................................................................................................31
11. TECHNICAL SPECIFICATIONS ....................................................................................................................................................... 32
12. WARRANTY .................................................................................................................................................................................... 33