®
PROFESSIONAL AUDIO & SOUND
DIGITAL MUSIC AMPLIFIERS 
DIGITAL
MUSIC SERIES 
TM
INSTALLATION AND WIRING
REGULATED AUXILIARY POWER SUPPLY
8
3120 Power Supply Output
VOX RELAY | 250 mA | UNMUTE | GROUND | MUTE2 | MUTE1 | VOLUME |
| 24V DC |
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| MASTER |
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| REMOTE | |
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NC | C | NO | + | - | MIC1 | G | M2 | M1 | RVC RVC C |
24 VOLT POWER SUPPLY
POWER SUPPLY
The Amplifier provides a 24 Volt - 250 mA DC Regulated Auxiliary Power Supply Output (Reference 8).
CABLE
To connect the Power Supply Output to accessories use a two conductor wire not less than AWG 18. This minimum wire gauge is necessary to minimize potential Voltage Drops in long wire connection applications. For wire resist- ance refer to Table below.
Fig. 28 - 24 Volt Power Supply Output Diagram
WIRE GAUGE - RESISTANCE TABLE
WIRE | RESISTANCE IN |
AWG | OHMS per 1000 Ft. |
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16 | 4.016 |
18 | 6.385 |
20 | 10.15 |
22 | 16.14 |
24 | 25.67 |
26 | 40.81 |
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NOTE:
When calculating the Wire Resistance for each run using a two conductor Wire the wire Resistance should be doubled.
EXAMPLE: The Total Resistance of a 1000 Ft. run of a AWG 24 two conductor Wire is:
25.67 X 2= 51.34 Ohm
VOX RELAY
VOX RELAY FUNCTIONS
VOX NOT ACTIVATED |
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Q237 |
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MUTE 1 BUSS ON |
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| M1 |
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| NO |
| JUMPER |
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| M2 | X |
| D211 |
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| COM | |
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MUTE 2 BUSS OFF SW206 |
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SWITCHSET SW206 DEFAULT SETTING |
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VOX ACTIVATED |
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| VOX RELAY | B | |||
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MUTE 1 BUSS ON |
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| M1 |
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| JUMPER |
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| M2 | X |
| D211 |
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| COM | |
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MUTE 2 BUSS OFF SW206 |
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| NC |
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| 24V DC | UNMUTE | GROUND | MUTE 2 | MUTE 1 | MASTER |
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VOX RELAY | REMOTE |
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250 mA |
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VOLUME |
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NC | C NO | + | - | MIC1 | G | M2 | M1 | RVC RVC C |
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| 3120 Vox relay 01 |
VOX RELAY
The Amplifier provides a VOX RELAY (Reference 7) with a single pole dual throw set of contacts. Figure A at left shows the contacts when the Relay is not activated. Figure B shows the contacts when the Relay is activated.
The Relay can be configured to activate when either VOX 1 (M1) or VOX 2 (M2) or both (VOX 1 and VOX 2) are acti- vated.
The VOX RELAY will remain engaged for as long as the VOX is active.
SWITCHSET SW206 - The SW206 is defaulted to M1. When VOX 1 is activated the Relay is switched ON. The factory setting can be changed to set the Relay to activate with either VOX 1 - VOX 2 or both.
Both Jumpers (M1 - M2) may be installed.
RELAY CONTACTS RATING
7 AMPERE AT 30 VDC MAXIMUM RATING.
Fig. 28A - VOX Relay Output Terminals
PAGE 28 | SPECIFICATIONS ARE SUBJECT TO CHANGE WITHOUT NOTICE | DMS3040/3080/3120 |
