ADS Worldwide 2120 User manual

ADSWORLDWIDE
(AUDIO DESIGN SERVICES LIMITED)
St David’s House, Adcroft street, Higher Hillgate, Stockport, SK1 3HW
Tel: [phone] Fax: [phone]
E-mail: [email protected]tWeb Site: WWW.ads-worldwide.net
NOTE
ADSworldwide strive to improve their products continuously, and therefore reserve the right to make
changes to drawings and technical specifications at any time without notice
CE
ISSUE: 1 8/2000
INSTALLATION AND OPERAT-
ING
INSTRUCTIONS
ADS -2120
MIXER AMPLIFIER
ADSworldwide
(AUDIO DESIGN SERVICES LIMITED)
Quality at every level

ADS - 2120 MIXER AMPLIFIER
FRONT PANEL
Power
Mic 1
Mic 2
Mic 3
Aux 1
Aux 2
Bass Treble
TONE CONTROL
1 2 34 5 6789
1BASS CONTROL
2TREBLE CONTROL
3AUX 2
4AUX 1
5MIC 3
6MIC 2
7MIC 1
8POWER ON / OFF SWITCH
9POWER LED
NOTES

NOTES ADS - 2120 MIXER AMPLIFIER
REAR PANEL
10 DC POWER TERMINALS
11 MAINS POWER SOCKET
12 LOUDSPEAKER TERMINALS
13 MIC 1 XLR INPUT SOCKET
14 MIC 2 & 3 INPUT SOCKETS (JACK)
15 AUX 1 & 2 INPUT SOCKETS (PHONO)
16 BOOSTER OUTPUT SOCKETS(PHONO)
10 11 12 13 14 15 16

GENERAL DESCRIPTION
ADS 2120 MIXER AMPLIFIER
The 120 watt RMS amplifier can be used on either Mains or DC power.
The amplifier has five inputs, one balanced microphone with VOX priority over
all others inputs, two unbalanced microphone inputs and two auxiliary inputs.
Volume controls for all inputs and individual bass and treble controls are located
on the front panel.
SAFETY INFORMATION
GENERAL INSTALLATION
WARNING : THIS APPLIANCE MUST BE EARTHED
IMPORTANT
The wires in the mains lead are coloured in accordance with the following code:
Green and yellow: Earth (E)
Blue: Neutral (N)
Brown: Live (L)
As the colours of the wires in the mains lead of the apparatus may not correspond with the coloured markings
identifying the terminals in your plug proceed as follows:
The wire which is coloured green and yellow must be connected to the terminal which is marked by the letter E
or by the safty earth symbol or coloured green and yellow.
The wire which is coloured blue must be connected to the terminal which is marked with the letter N or
coloured black.
The wire which is coloured brown must be connected to the terminal which is marked with the letter L or
coloured red.
If a 13 Amp (BS1363) plug or other type of plug is used, a 5 Amp fuse must be fitted either in the plug or at
the distribution board.
1 DO NOT expose the unit to rain or moisture. If any fluids of foreign objects
should enter the unit, disconnect the power plug immediately.
2 DO NOT run microphone cables near mains, data, telephone or 100V lines.
3 PROTECT the unit from heat and allow adequate ventilation. Place away from
direct source of heat, such as heating vents and radiators.
4 AVOID jointing the microphone cables, when this is unavoidable make sure a
good screen connector is used.
5 ALWAYS use a balanced or floating low impedance microphone terminating
in balanced input on long microphone runs.
SPECIFICATIONS
RMSOutput power 120 watts into 8 ohm at 1 khz
Constant Voltage output 100V - 70V
Constant Impedance output 8 ohm
Distorsion at rated power < 2%
Frequency responce 60Hz to 17kHz + or - 3db
Tone control range Bass + or - 10db
Treble + or - 10db
Microphone Input
Sensitivity / Imp Mic 1 1.5mV at 600ohm
Mic2 1.5mV at 2k ohm
Mic3 1.5mV at 2k ohm
S/N ratio Mic 1 Better than 60db
Mic 2 Better than 60db
Mic 3 Better than 60db
Auxiliary Input
Sensitivity / Imp AUX 1 100mV at 47k ohm
AUX 2 100mV at 47k ohm
S/N ratio AUX 1 Better than 75db
AUX 2 Better than 75db
Booster Output
Output level 100mV at 600 ohm
Voice Operated Priority
Vox sens control Off - 0.7mV
Vox sig reduction 40db
Operating Conditions
Mains power supply 220 -240V AC at 50Hz
DC power supply 24 Volt
Dimensions (HWD) 88 x 430 x 234
Weight 8.0kg

PRIORITY CONNECTIONS
ACCESSORIES
Description Part Number
19” Rack Mounting Ears
DC Power
The equipment may be operated from a battery power source. ENSURE
CORRECT POLARITY when connecting batteries
++
+
+
+
–The ADS 2120
Requires a 24 Volt
source
Loudspeaker Loading
To allow sufficient transient overload margin it is suggested that the output load
should not exceed approximately 70% of the rated power output
POSSIBLE INTERFACES
Kestrel Cabinet
Loudspeaker
Sigma Ceiling
Loudspeaker
Cougar Horn
Loudspeaker
Fire Dragon
Column
Loudspeaker
Power
Mic 1
Mic 2
Mic 3
Aux 1
Aux 2
Bass Treble
TONE CONTROL
SIGNET
MICROPHONE
EC 500
MICROPHONE
F208 RDS
TUNER
PDM 603
COMPACT
DISC
24V BATTERY
DC AUX2 AUX MIC2 MIC1
MIC3

MICROPHONE CONNECTIONS
Microphone 1
Microphone 2 & 3
Auxiliary 1 & 2
Microphone 1 uses an XLR connector. The input is balanced and has VOX (voice
operaterd switch) priority over all other inputs. The VOX attenuation level may be
ajusted by the internal control VR105. (Note: he cover of the amplifier should only
be removed by qualified personnel)
Microphone 2 and 3 use standard 1/4” Mono Jack plugs. The inputs are unbalanced
and designed for Low Impedence microphones.
Tip
Sleeve
Tip...........Signal
Sleeve......Screen
AUX 1 and 2 use standard phono sockets. each imput has two sockets which when con-
nected to stereo equipment mix the left and right channels to obtain a Mono signal.
Pin........Signal
Sleeve.....Screen Pin
Sleeve
Balanced operation
Pin 1 Screen
Pin 2 Signal (live)
Pin 3 Signal (return)
Unbalanced operation
Pin 1 Screen
Pin 2 Signal
Pin 3 Short to pin 1
1
3
2
XLR PLUG
Rear View
Booster Output
Loudspeaker Output
70V
100V
Low Impedance
Two standard phono sockets are provided for the connection of Booster Amplifiers
Pin........Signal
Sleeve.....Screen Pin
Sleeve
Outputs for three different loudspeakers are available. It is important that only One
Type is used at any one time. Damage to the amplifier will be caused if not observed.
For use with loudspeakers designed for 70V line systems.
Connections are to the Common and the 70V terminal.
For use with loudspeakers designed for 100V line systems.
Connections are to the common and 100V treminal
For use with loudspeakers designed for low impedence’
Connections are to the Common and 8ohm terminals.
++ +
+
Com 8 ohm
++ +
+
Com 100V
++ +
+
Com 70V