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PAGE 15
SPECIFICATIONS ARE SUBJECT TO CHANGE WITHOUT NOTICEDMS3040/3080/3120
INPUT 5 SET AS AUX 2 (Reference. 20)
The AUX 2 input is provided for high level program source.
The output from a Jukebox, Tuner, Tape Cassette Deck,
CD Player or other high level program source may be
directly connected to this input.
AUX 2 SENSITIVITY ATTENUATOR (Reference. 21)
The AUX 2 Input is equipped with a Sensitivity Attenuator
that allows the interface of the Input with Devices having a
wide range of Output Levels.
TYPICAL OUTPUT LEVEL OF MUSIC DEVICES:
Satellite Receivers = 1 to 5 Volt
Digital Tuners/Receivers = 100 to 300 Mv
CD Players/Changers = 2 to 3 Volt
Tape Decks = 500 to 700 Mv
By adjusting the Input Sensitivity to the level that matches
the device used the correct interface with the Amplifier is
achieved resulting in lower overall distortion and better fre-
quency response characteristics.
SETTING THE AUX 2 INPUT ATTENUATOR
Connect a Music Source to the Amplifier.
Turn Attenuator (rear panel) fully counterclockwise.
Turn INPUT 5 Front Panel Control to midway.
Switch Amplifier and Music Source ON.
Turn Attenuator Control (rear panel) until desired Output
Level is achieved.
Adjust INPUT 5 Front Panel Level Control Up-Down as
desired.
STEREO SUMMING
Most Music Source Devices provide a Stereo Output.
Accordingly the Amplifier is equipped with two Jacks for the
AUX 1 Input (L and R). The two Inputs are internally
buffered and electronically mixed to Mono. This system
ensures that the Music Device is properly loaded and that
the Stereo Signals are correctly summed (L+R) to Mono
without distortion.
CABLE
To connect the music source devices to the AUX 1 Input
use two single conductor shielded audio cable terminated
in a single prong phono plug on both ends.
R
MUSIC OUTPUT
L
LR
AUX 1
ATTENUATOR
3120 Aux2 01
R
L
INPUT 5
MIC-AUX2
BY INTERNAL
SWITCH
INPUT - 4 (AUX1)
47 kohm 100 mV
21
20
V1
V2
OFF
VOX 2 BUSS OFF
M2
M1
OFF
INPUT 5
AUX 2
X
MUTE 2 BUSS OFF
X
MUTE 1 BUSS ON
MUSIC OUT
MUSIC
IN
Input 1-4 - V1 - 01
SW213
SW223
VOX 1 BUSS OFF
X
WHEN MIC 1 IS
ACTIVATED THE VOX 1
BUSS IS SWITCHED-ON
AND THE SIGNAL
PRESENT ON THE
MUTE 1 BUSS WILL
MUTE THE MUSIC
FROM INPUT 5/AUX 2
JUMPER
JUMPER
AUX 2 MIC 5
SW208 and SW229
AUX 2 - MIC 5 SWITCH
DEFAULT JUMPERS AND SWITCH SETTING
SW213 = OFF
SW223 = M 1
SW208 = AUX 2
SW229 = AUX 2
(AUX 2)
ATTENUATOR
INPUT 5 (AUX 2)
47 Kohm 100 mV
SET TO AUX 2
SATELLITE RECEIVER
paso
AM/FM TUNER
CD PLAYER
CD
TAPE DECK
TRACK 01
Fig. 15 - Rear Panel AUX 2 Input Diagram
AUX 2
AUX 2 INPUT MUTING
3120 Stereo Summ 01
R
L
INPUT 5
MIC-AUX2
21
20
(AUX 2)
ATTENUATOR
INPUT 5 (AUX 2)
47 Kohm 100 mV
Fig. 15A - Stereo Summing and AUX 2 Input Attenuator
MUTING - WHEN MIC 1 OR THE TEL IN ARE ACTI-
VATED THE VOX 1 BUSS IS SWITCHED-ON AND
THE SIGNAL PRESENT ON THE MUTE 1 BUSS
WILL MUTE THE MUSIC FROM AUX 2.
SETTING INPUT 5 AS AUX 2 INPUT 5/AUX 2 DEFAULT SETTING
JUMPERS/SWITCH NO. FACTORY SETTING
SW213 - VOX JUMPER = OFF
SW223 - MUTE JUMPER = M 1
SW208 - AUX 2-MIC 5 SWITCH = AUX 2
SW229 - AUX 2-MIC 5 SWITCH = AUX 2
INSTALLATION AND WIRING
PROFESSIONAL AUDIO & SOUND
®
TM
DIGITAL MUSIC SERIES
DIGITAL MUSIC AMPLIFIERS