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SPECIFICATIONS ARE SUBJECT TO CHANGE WITHOUT NOTICE DMS3040/3080/3120
ADDRESSABLE DUAL VOX SYSTEM
DUAL VOX - VOICE ACTIVATED MUTING - The Amplifier
is equipped with a DUAL noiseless, fast acting Logic VOX
Switching System. When any of the INPUTS are activated
and a Signal is present on a given INPUT and either VOX 1
or VOX 2 or BOTH are Switched-ON (using internal
Jumpers) then the MUTE 1 or MUTE 2 BUSS or BOTH are
ACTIVE. If any of the INPUTS have the MUTE 1 or MUTE
2 Switched-ON (by Internal Jumpers) then the INPUT (or
INPUTS) will be MUTED according to the Jumpers Setting.
Once the SIGNAL-ON on the ACTIVE INPUT is terminated
the normal functions are automatically restored on all muted
inputs.
ACCESS TO VOX AND MUTE JUMPERS
REFER TO JUMPERS AND SWITCHES INTERNAL
ACCESS.
CAUTION: PRIOR TO PERFORMING THE ABOVE OPER-
ATION BE SURE TO FOLLOW THE SAFETY NOTES
REFERRING TO THE REMOVAL OF THE AMPLIFIER
COVER.
Fig. 16 - Rear Panel VOX 1 and VOX 2 Sensitivity Control
and MUTE 2 Delay Control
VOX - VOICE ACTIVATED MUTING
VOX SENSITIVITY CONTROLS
313233
VOX-1
VOX-2 MUTE-2
SENS
SENS
DELAY
DMS3120 Vox Sens 01
VOX SENSITIVITY ADJUSTMENT
1) Turn all Front Panel Input Level Controls to 0.
2) Turn VOX Sensitivity Control counterclockwise until it
stops.
3) Connect a Signal Source (Microphone, Telephone or
Music) to the respective Input Terminals (For connection
details refer to the appropriate section in this Manual).
4) While talking from a Paging Source (Microphone or
Telephone) or Playing Music rotate the INPUT LEVEL CON-
TROLS (Front Panel) until the desired output level is
achieved.
5) While talking from a Paging Source (Microphone or
Telephone) or Playing Music, turn the Sensitivity Control
(VOX 1 or VOX 2) slowly clockwise until the Muting (MUTE
1 or MUTE 2) is activated.
VOX JUMPERS DEFAULT SETTING TABLE
SW210 INPUT 2 - VOX1 - VOX2 - OFF OFF
SW211 INPUT 3 - VOX1 - VOX2 - OFF OFF
SW212 INPUT 4 - VOX1 - VOX2 - OFF OFF
SW213 INPUT 5 - VOX1 - VOX2 - OFF OFF
SW214 TEL IN - VOX1 - VOX2 - OFF V1
SW215 INPUT 1 - VOX1 - VOX2 - OFF V1
SW221 MODULE - VOX1 - VOX2 - OFF OFF
JUMPER JUMPER FUNCTION FACTORY FACTORY
ID NO. REFERENCE DESCRIPTION SETTING SETTING
MAIN PCB JUMPERS
VOX SENSITIVITY CONTROLS
VOX 1 AND VOX 2 SENSITIVITY CONTROLS
The VOX 1 and VOX 2 Sensitivity Controls set the sensitiv-
ity level at which point the VOX 1 and VOX 2 are respective-
ly engaged during INPUT ACTIVATION.The VOX Sensitivity
Controls are located on the Amplifier Rear Panel.
VOX 1 SENSITIVITY CONTROL = Reference 33
VOX 2 SENSITIVITY CONTROL = Reference 32
VOX SENSITIVITY ADJUSTMENT
INSTALLATION AND WIRING
PROFESSIONAL AUDIO & SOUND
®
TM
DIGITAL MUSIC SERIES
DIGITAL MUSIC AMPLIFIERS