Sound Choice 1002M User manual

OPERATION MANUAL
www.scpaudio.com
Please follow the instructions in this manual to obtain the optimum results from this unit.
We also recommend that you keep this manual handy for future reference.
1002M
COMMERCIAL SERIES |Pre Amplier

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TABLE OF CONTENTS
1. Safety Precautions 3
2. Attention 4
3. General Description 5
4. Features 5
5. Functions 6
- Front Panel
- Rear Panel
6. Connection Diagram 8
7. Block Diagram 9
9. Specications 10
10. Installing Method 11

Sound Choice Pro Audio www.scpaudio.com 1002M -Pre-Amplier page 3
• Be sure to read through all the instructions in this Manual before using the product.
• Please ensure that you observe the instructions in this Manual, especially those highlighted by Safety Symbols and Safety
Messages.
• Please retain this Manual in a safe place for future reference.
Safety Symbol and Safety Message Conventions
The Safety Symbols and Safety Messages described below have been included in this Manual to prevent possible bodily injury
and property damage which could result from mishandling. Please read through this Manual and become familiar with all
Safety Symbols and Safety Messages , before operating this product.
When Installing the Unit
• Do not expose the unit to rain or an environment where
it may be splashed by water or other liquids, as doing so
may result in re or electric shock.
• Use the unit only with the voltage specied on the unit.
Using a voltage higher than that which is specied may
result in re or electric shock.
• Do not cut, kink, or otherwise damage, nor modify the
power supply cord. In addition, avoid using the power
cord in close proximity to heaters, and never place heavy
objects -- including the unit itself -- on the power cord, as
doing so may result in re or electric shock.
• Be sure to replace the unit’s terminal cover after
connection completion. Because high voltage is applied
to the speaker terminals, never touch these terminals to
avoid electric shock.
• Be sure to ground to the safety ground (earth) terminal
to avoid electric shock. Never ground to a gas pipe as a
catastrophic disaster may result.
• Avoid installing or mounting the unit in unstable
locations, such as on a rickety table or a slanted surface.
Doing so may result in the unit falling down, causing
personal injury and/or property damage.
When the Unit is in Use
• Should any of the following irregularities be found
during use, immediately switch o the power, disconnect
the power supply plug from the AC outlet and contact
your nearest Sound Choice dealer. Make no further
attempt to operate the unit in this condition as this may
cause re or electric shock.
- If you detect smoke or a strange smell coming from
the unit.
- If water or any metallic object gets into the unit
- If the unit falls, or the unit case breaks
- If the power supply cord is damaged (exposure of the
core, disconnection, etc.)
- If it is malfunctioning (no tone sounds.)
• To prevent a re or electric shock, never open
nor remove the unit case as there are high voltage
components inside the unit. Refer all servicing to your
nearest Sound Choice dealer.
• Do not place cups, bowls, or other containers of liquid
or metallic objects on top of the unit. If they accidentally
spill into the unit, this may cause a re or electric shock.
• Do not insert nor drop metallic objects or ammable
materials in the ventilation slots of the unit’s cover, as this
may result in re or electric shock.
1. SAFETY INSTRUCTIONS
WARNING
WARNING
CAUTION
Indicates a potentially hazardous situation which, if mishandled, could result in death
or serious personal injury.
Indicates a potentially hazardous situation which, if mishandled, could result in
moderate or minor personal injury, and/or property damage.

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2. ATTENTION
When Installing the Unit
• Never plug in nor remove the power supply plug with
wet hands, as doing so may cause electric shock.
• When unplugging the power supply cord, be sure to
grasp the power supply plug; never pull on the cord
itself. Operating the unit with a damaged power supply
cord may cause a re or electric shock.
• When moving the unit, be sure to remove its power
supply cord from the wall outlet. Moving the unit with
the power cord connected to the outlet may cause
damage to the power cord, resulting in re or electric
shock. When removing the power cord, be sure to hold
its plug to pull.
• Do not block the ventilation slots in the unit’s cover.
Doing so may cause heat to build up inside the unit and
result in re.
• Avoid installing the unit in humid or dusty locations,
in locations exposed to the direct sunlight, near the
heaters, or in locations generating sooty smoke or
steam as doing otherwise may result in re or electric
shock.
When the Unit is in Use
• Do not place heavy objects on the unit as this may
cause it to fall or break which may result in personal
injury and/or property damage. In addition, the object
itself may fall o and cause injury and/or damage.
• Make sure that the volume control is set to minimum
position before power is switched on. Loud noise
produced at high volume when power is switched on
can impair hearing.
• Do not operate the unit for an extended period of
time with the sound distorting. This is an indication of a
malfunction, which in turn can cause heat to generate
and result in a re.
• Contact your Sound Choice dealer as to the cleaning.
If dust is allowed to accumulate in the unit over a long
period of time, a re or damage to the unit may result.
• If dust accumulates on the power supply plug or in the
wall AC outlet, a re may result. Clean it periodically. In
addition, insert the plug in the wall outlet securely.
• Switch o the power, and unplug the power supply
plug from the AC outlet for safety purposes when
cleaning or leaving the unit unused for 10 days or more.
Doing otherwise may cause a re or electric shock.
Due to product upgrades, some of the features and specications in the user manual may not match the actual functions. We
are sorry for any inconvenience this may cause, and thank you for your kind understanding.
CAUTION
An all-pole mains switch with a contact separation of at least 3 mm in each pole shall be incorporated in the electrical
installation of the building.

Sound Choice Pro Audio www.scpaudio.com 1002M -Pre-Amplier page 5
3. GENERAL DESCRIPTION
4. FEATURES
1. Standard chassis design, 1U aluminium alloy, light equipment, simple operation, artistic and practical
2. Chime Signal
a. Selective two tone/four tone chime(Internal setting)
b. Automatic priority
c. Permissible external chime remote and P.T.T remote
3. Master 1 and 2 output
4. Two band eq per output
5. Signal indicator per input
6. Independent din jack for P.T.T remote
7. Priority switch and phantom of MIC Inputs 2-4
8. Selective mic input of H.P.F
9. Selective output per input signal (output 1, output1+2, output 2)
10. Independent line input with RCA pin jack (line 7-10)
11. Recording output (RCA)
12. Led indicator for Master-output
13. AC/DC 24V
This Sound Choice Pro Audio product ts into the Commercial Series range. The 1002M is a dedicated Pre-Amplier device
often referred to as a mixer.
The 1002M comes in a very convenient 1U rack size making it ideal for small to medium Public Address and Sound Systems.
The 1002M is a very functional device catering for a number of dierent simultaneous inputs:1 remote paging microphone
and up to 9 x balanced microphone inputs (4 of these channels can accept dual RCA inputs)
There are 2 discrete balanced XLR outputs (for connecting to a couple of power ampliers) as well as a pair of unbalanced RCA
outputs (to connect to a recording device).
Each input has a volume attenuation knob on the front panel. Bass and Treble can be varied on each Master Channel
according to the need by 2 knobs on the front panel. Two Master volume controls are also provided.

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5. FUNCTIONS (Front Panel)
1. CHIME
By pressing the chime switch a chime signal will
be activated as a pre signal. You can adjust the
volume level.
OUTPUT SWITCH
This selector determines where the signal is
routed from the device. The Chime signal has
a priority; when the chime signal is activated,
signal output of input 5-10 will be closed.
IMPORTANT NOTICE:
Priority will be given only for selected output.
2. P.T.T 1 INPUT CONTROLS
Volume control for Mic 1 input. Adjust the
volume level so as not to turn on +3CLIP LED
(under 7 & 8 on the knob)
OUTPUT SWITCH
This selector determines where the signal is
routed from the device. When this signal is
activated, signal output of input 5-10 will be
closed.
3. MIC/LINE 2-4 INPUT CONTROLS
Volume control of the input device.
Adjust the volume level so as not to turn on
+3CLIP LED (under 7 & 8 on the knob).
OUTPUT SWITCH
This selector determines where the signal is
routed from the device. When Inputs 2-4 are
active, signal output of inputs 5-10 will be closed.
MODE SWITCH
MIC‚—: Switch provides 300Hz H.P.F
MIC —: MIC input switch without any lter
LINE: Line input (e.g. CD, DVD, MP3, Tuner)
IMPORTANT NOTICE: The Mode Switch lter
will only be applied to balanced condenser Mic
connected to the corresponding XLR.
DIP SWITCH PRIORITY MIC/LINE 2-4
When signal is applied to MIC/LINE 2-4, and the
Dip switch is“ON”, input signal to MIC/LINE 5-10
will be closed.
4. MIC/LINE 5-10 INPUT CONTROLS
Volume control of the input device.
Adjust the volume level so as not to turn on
+3CLIP LED (under 7 & 8 on the knob).
OUTPUT SWITCH
This selector determines where the signal is
routed from the device. When Inputs 1-4 are
active, signal output of inputs 5-10 will be closed.
MODE SWITCH
MIC‚—: Switch provides 300Hz H.P.F
MIC —: MIC input switch without any lter
LINE: Line input (e.g. CD, DVD, MP3, Tuner)
IMPORTANT NOTICE: The Mode Switch lter
will only be applied to balanced condenser Mic
connected to the corresponding XLR.
5. EQUALIZER
Independent adjustment available of‘Low’ and
‘High’EQ for both Master 1 and Master 2 output.
6. MASTER VOLUME 1,2
This provides independent Master volume
control of all input levels for both Master 1 and
Master 2.
Adjust the volume level so as not to turn on
+3CLIP LED (under 7 & 8 on the knob).
7. POWER SWITCH
Press‘|’ to turn the power ON .
Press‘O’to turn the power OFF.

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FUNCTIONS (Rear Panel)
8. ~ 240V 50Hz AC POWER
Be sure to check correct AC voltage.
IMPORTANT NOTICE: Be sure not to make a
shorten for battery and polarity of battery.
9. DC POWER
Connection point of 24V DC power
10. OUTPUTS 1,2
Balanced XLR Output sockets. These Outputs
can be selected by switches on each of the Input
Channels on the front panel.
11. RECORDING
A pair of unbalanced RCA sockets are provided
for connecting a recording device. The mono
signal is converted to stereo in the internal
circuitry. Recording output volume can not be
adjusted by the Master volume controller as the
the signal is taken before the Master control.
12. LINE 7-10 INPUTS
A pair of unbalanced RCA sockets are provided
for connecting other audio replay devices (CD,
DVD, MP3, Tuner, etc). [10dB(245mV) input
level] The input circuitry converts the signal into
mono.
13. MIC/LINE 2-6 INPUTS
MIC/LINE balanced input can be selected by a
mode switch in the front panel.
IMPORTANT NOTICE:
Please ensure the volume is turned right down
before connecting a cable.
14. P.T.T. 1
Connect this terminal with MIC priority and
chime controls are activated from MIC (P.T.T
remote).
The microphone cable with shield can be
extended up to 30m.
IMPORTANT NOTICE:
Be sure not to make a short to the ground as the
microphone signal +, is for operating power of
the condensor microphone.
15. CHIME REMOTE TERMINAL
This is a terminal for chime signal.

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6. CONNECTION DIAGRAM
Rear Panel Connections

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7. BLOCK DIAGRAM

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9. SPECIFICATIONS
MODEL 1002M
Input MIC/LINE: Balanced -5dBU (2.45mV)/5Kohms
-10dBu (245mV)/5Kohms
LINE RCA INPUT: Unbalanced -10dBu (245mV)/10Kohms
Output Level/Impedence MASTER 1 & 2: Balanced - NOR +4dBu (21.23V)/200ohms
REC: Unbalanced - NOR 0dBu (0.775mV)/10Kohms
Frequency Response Less than -0.5dBu (20Hz-20KHz)
Signal to Noise Ratio MIC: more than 60dBu
LINE: more than 0.03%
Cross-talk MIC: more than 60dBu
LINE: more than 75dBu
Power Consumption 13W at ~240V/50Hz
Dimensions (mm) 484 x 378 x 44
Net Weight 5.52Kg
Gross Weight 6.65Kg

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10. INSTALLING METHOD
Unit: mm
NOTE: Please ensure that the unit has at least a 10cm gap from any object on all sides, so as not obstruct the air ow and
cause the unit to overheat.

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