Sound Choice 801M 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.
801M
COMMERCIAL SERIES |Pre Amplier
page 2 801M Pre-amplier www.scpaudio.com Sound Choice Pro Audio
TABLE OF CONTENTS
1. Safety Precautions 3
2. Attention 4
3. General Description 5
4. Features 5
5. Functions 6
6. Operation Illustrations 8
6.1 Power LED 8
6.2 Power Switch 8
6.3 Mic 1 EXT Microphone Input 8
6.4 MIC 2-5 Balanced Inputs 9
6.5 +48V Phantom Power 9
6.6 EMC Input 10
6.7 AUX 1-3 Input 10
6.8 REC - Record Out 11
6.9 OUTPUT - Balanced Output 11
6.10 24V DC Input 12
6.11 Power Input 12
7. Connection Diagram 13
8. Block Diagram 14
9. Specications 15
10. Installing Method 16
Sound Choice Pro Audio www.scpaudio.com T801M Pre-amplier 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 specied on the unit.
Using a voltage higher than that which is specied 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.
page 4 801M Pre-amplier www.scpaudio.com Sound Choice Pro Audio
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 specications 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 T801M Pre-amplier page 5
3. GENERAL DESCRIPTION
4. FEATURES
1. Standard chassis design, 1U aluminium alloy; light equipment, simple operation, artistic and practical
2. MIC 2-3-4-5 input, Aux 1-2-3 input, EMC input, REC input
3. MIC I is the rst priority input, CHIME and EXT MIC is the second priority, EMC is the third priority input, auto input is the
most priority than all the other input.
4. Each line input has a separate volume and Master volume control
5. MIC 2-3-4-5 input has +48 phantom power switch
6. With chime generator, oering prompt tone for paging
7. It can be worked with T-319.
8. 24V spare power input
This Sound Choice Pro Audio product ts into the Commercial Series range. The 801M is a dedicated Pre-Amplier device
often referred to as a mixer.
The 801M comes in a very convenient 1U rack size making it ideal for small to medium Public Address and Sound Systems.
The 801M is a very functional device catering for a number of dierent simultaneous inputs:1 remote paging microphone; up
to 4 x balanced microphone inputs with individual phantom power and input gain control, or 3 x unbalanced microphone
inputs (or a combination of both); 3 x auxiliary devices; and 1 x EMC emergency tone generator (with priority control).
There is a single balanced line output (for connecting to a power amplier) 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 (with the exception of the EMC input). Bass and Treble can be
varied according to the need by 2 knobs on the front panel. A Master volume control is also provided.
The 801M comes with a built in Chime that can be used as a pre announcement indicator.
page 6 801M Pre-amplier www.scpaudio.com Sound Choice Pro Audio
5. FUNCTIONS (Front Panel)
1. Electricity Indicator (red)
2. Power Switch
3. Chime Control Button
4. Chime Volume Control
5. Mic(2-5) Volume Control
6. Aux (1-3) Volume Control
7. Bass Volume Control
8. Treble Volume Control
9. Master Volume Control
Sound Choice Pro Audio www.scpaudio.com T801M Pre-amplier page 7
FUNCTIONS (Rear Panel)
10. Mic1 insert connects with T-319
11. Mic(2-5) balance (XLR) mic input
12. Mic(2-5) phantom +48V power option switch
13. EMC input
14. AUX (1-3) input
15. REC output
16. Output(XLR)
(connect to power amplier)
17. DC 24V spare power input
18. ~240V/50Hz power input
19. Mic channel Gain control
20. Mic(2-4) unbalance(TRS) mic input
page 8 801M Pre-amplier www.scpaudio.com Sound Choice Pro Audio
6. OPERATION ILLUSTRATION
6.1 Power LED
6.2 Power Switch
When the Power Switch is located in the‘ON’position the unit will power up, and the Power Indicator light will glow red.
When the Power Switch is located in the‘OFF’position the unit will power down, and the Power Indicator light will go out.
The Power Switch does not control the +24V Switch.
Mic 1 input requires a 7pin or 5pin interface connection.
Mic 1 input has priority over other inputs.
Mic 1 can be extended up to a maximum length of 30 meters.
NOTE: In order for the unit to function correctly, the unit must be connected to the correct power source. If the machine
fails to work when connected correctly, disconnect it from the source and contact your supplier.
NOTE: Only an approved Remote Paging Console microphone can be connected to Mic 1 input.
6.3 Mic 1 EXT microphone input
Sound Choice Pro Audio www.scpaudio.com T801M Pre-amplier page 9
OPERATION ILLUSTRATION
6.4 Mic (2-5) Balanced Microphone / Mic (2-4) Unbalanced Input and GAIN
A balanced microphone can be connected to the device in Mic 2-5 XLR inputs.
Each XLR input has an input gain trim which can be adjusted using a at head screwdriver (+10dB to +44dB).
A unbalance microphone can be connected to the device in Mic 2-4 TRS inputs.
Bass, Treble and Master volume can be controlled from the front panel.
To activate Phantom Power (+48V) on Mic 2-5 XLR inputs you will need to move the appropriate Dip Switch to the‘ON’
(down) position. When you no longer need Phantom Power (+48V) on a particular XLR input then move the Dip switch
to the‘O’ (up) position. Please note (as per the chart on the back of the device) that Dip switch 1 activates +48V to Mic 2
XLR input, Dip switch 2 activates +48V to Mic 3 XLR input; Dip switch 3 activates +48V to Mic 4 XLR input; and Dip switch
4 activates +48V to Mic 5 XLR input.
NOTE: Before connecting a microphone to the device please ensure the volume is turned to minimum. Please ensure that
the microphone connector is completely inserted before attempting to operate.
NOTE: Before turning Phantom Power (+48V) on please ensure the corresponding channel volume is set to minimum.
6.5 +48V Phantom Power Selector Switch
page 10 801M Pre-amplier www.scpaudio.com Sound Choice Pro Audio
OPERATION ILLUSTRATION
6.5 EMC Input
The EMC input has urgent priority function.
The Auxiliary Inputs are via RCA connectors.
Up to 3 Auxiliary devices can be connected to the device (AUX 1-3).
Each pair of Aux inputs has a corresponding volume control knob on the front of the device.
Bass, Treble and Master volume are also controlled by knobs on the front panel.
NOTE: The volume of the EMC emergency Input is determined by the Input device.
NOTE: Before connecting auxiliary device please ensure that the corresponding channel volume is set to minimum.
6.7 AUX 1-3 Inputs
Sound Choice Pro Audio www.scpaudio.com T801M Pre-amplier page 11
OPERATION ILLUSTRATION
6.8 REC (recording) Output Interface
This device can be connected to an external recording device via the pair of RCA sockets on the rear panel labelled‘Rec.’
The volume of this signal sent to these sockets is controlled by the Master volume knob on the front panel.
This device has a balanced XLR socket on the rear panel. This output can be connected to a power amplier.
The overall volume and tonal control for the‘OUTPUT’ is via the Bass, Treble and Master knobs on the front panel.
NOTE: It is advised that a connection with a power amplier is securely made before powering on this device.
6.9 OUTPUT - The Balanced Line Output
page 12 801M Pre-amplier www.scpaudio.com Sound Choice Pro Audio
OPERATION ILLUSTRATION
6.10 24V DC Input
In the event that 220V-240V power supply is cut o to this device, a 24V DC input source can be connected to maintain
operation.
This device is designed to accept 220-240V power. Please ensure the power cord is securely tted to the source and the
power input socket on the back panel.
It is recommended that the device be disconnected from the power source if it is not used for extended periods of time.
If the power cord is damaged in any way then the device should not be turned on.
NOTE: Only connect a 24V DC source to this device to avoid malfunction or accident. It is recommended that the 24V DC
power supply be disconnected when not in use so as not to reduce the life of this power source.
NOTE: Only operate this device when connected correctly to 220-240V power source.
6.11 Power Input
Sound Choice Pro Audio www.scpaudio.com T801M Pre-amplier page 13
7. CONNECTION DIAGRAM
page 14 801M Pre-amplier www.scpaudio.com Sound Choice Pro Audio
8. BLOCK DIAGRAM
Sound Choice Pro Audio www.scpaudio.com T801M Pre-amplier page 15
9. SPECIFICATIONS
MODEL 801M
INPUT MIC 2-5 - Balanced - 2.5mv/2KOhms
MIC 2-4 - Unbalanced - 5mv/1KOhms
AUX 1-3 - Unbalanced -10KOhms/300mV
EMC - Unbalanced - 775mV/15KOhms
OUTPUT 775mV - 600Ohms
ADJUST VOLUME BASS: ±10dB at 100Hz
TREBLE: ±10dB at 10KHz
FREQUENCY RESPONSE 20Hz~20KHz(±1dB)
POWER INPUT ~240V/50Hz
DIMENSION 484 x 295 x 44mm
NET WEIGHT 3.75Kg
GROSS WEIGHT 4.75Kg
page 16 801M Pre-amplier www.scpaudio.com Sound Choice Pro Audio
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.
version 0.1
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