IMPORTANT SAFETY INSTRUCTIONS
When using this electronic device, basic precautions should always be taken, including the
following:
1. Read all instructions before using the product.
2. Do not use this product near water (e.g., near a bathtub, washbowl, kitchen sink, in a wet
basement or near a swimming pool etc).
3. Use this device when you are sure that preamplifier has a stable base and it is fixed securely.
4. This product, in combination with amplifier and loudspeakers may be capable of producing
sound levels that could cause permanent hearing loss. Do not operate for a long period of
time at a high volume level or at a level that is uncomfortable. If you experience any
hearing loss or ringing in the ears, you should consult with otorhinolaryngologists. The
product should be positioned so that proper ventilation is maintained.
5. The product should be located away from heat sources such as radiators, heat vents, or
other devices (including amplifiers) that produce heat.
6. The product should be connected to a power supply that is described in the operating
instructions or are marked on the product. Replace the fuse only with one of the specified
type, size and correct rating.
7. The power supply cord should be undamaged and never share an outlet or extension cord
with other devices so that the outlet or extension cord's power rating is exceeded. Never
leave device plugged be left plugged in to the outlet when it’s not being used for a long
period of time.
8. Care should be taken so that objects do not fall into, and liquids would not be spilled
through, the enclosure's openings.
9. The product should be serviced by qualified service personnel if:
• The power supply cord or the plug has been damaged.
• Objects have fallen into or liquid has been spilled on the product.
• The product has been exposed to rain.
• The product has been dropped or the enclosure damaged.
All the other servicing must be referred to qualified service personnel too.
10. Unplug this device when unused for long periods of time.
11. There are some areas with high voltage inside, to reduce the risk of electric shock do not remove
cover of the preamplifier. The cover should be removed by the qualified personnel only. No user
serviceable parts inside.
CONTENTS:
Before you start
What's in the box 4
Features 4
Hints on installation 4
Controls and connections
Rear panel 5
Connectors 6
Cable wiring examples 7
Specifications
Specifications 9
SUB 2 - active subwoofers for public address and home installations. Black coloured body with front
mounted 10” speaker. 200 W power amplifier, 20 Hz - 130 Hz frequency range. Low pass filter, volume
and phase control, ground lift switch. Built-in limiter. Line level stereo inputs. Simple device’s connecting
to the sound system.
What’s in the box?
Items those are included in the box:
• Active subwoofers SUB 2
• Instruction manual
• Power cable
Features
• 200 W power amplifier, 20 Hz - 130 Hz
frequency range.
• Low pass filter, volume and phase control,
ground lift switch.
• Built-in limiter.
• Line level stereo inputs and high pass
outputs.
• Stereo RCA and balanced 6.3 mm TRS
Jack and XLR inputs.
• Front mounted 10” speaker.
Hints on Installation
This user manual contains an important information on operating SUB 2 active subwoofer correctly and
safety. Please read it carefully before operating your subwoofer.
Before connecting audio signal, make sure that the power of all your system’s components
including the preamplifier or sound mixer is turned off. Also, make sure that all of inputs’ controls of your
active subwoofer are turned down
.
This will avoid damage to your speakers and avoid unexpected noise.
Before disconnecting the SUB 2 active subwoofers always turn off the power switch.
Rear Panel
1. VOLUME CONTROL
This knob is designed for the
volume level adjusting. Please pay
attention: The lowest input sensitivity
level which can be set is -30dB.
2. LOW PASS CONTROL
This knob controls crossover’s
frequency and allows to move
crossover point between 50Hz and
130Hz.
3. PHASE
This switch inverts the phase of the
audio signal. If the switch is set to the “0”
position the audio signal phase is not
adjusted. If the switch is set to the “180”
position the audio signal is inverted.
4. LINE IN
Line level Stereo RCA input.
5. LINE OUT
Line level Stereo RCA output.
6. TRS JACK INPUT
Line level 6.3 mm balanced jack
stereo input.
7. LINE LEVEL XLR INPUT
Line level balanced XLR input.
8. LINE LEVEL XLR OUTPUT
The audio signal in this balanced
XLR output is linked from internal
crossover’s high pass section, so
frequency response of this output is in
depended from crossover’s setting.
9. GROUND LIFT SWITCH
Ground lift switch is used to
eliminate or reduce noise caused by
ground loops. Set the switch to or
position depending on your
situation.
marking means that audio signal
ground is disconnected from chassis
ground.
marking means that audio signal
ground is connected to chassis
ground.
10. MAIN POWER SWITCH
By using this switch subwoofer can
be turned on and turned off.
11. MAIN POWER SOCKED AND FUSE
This socked is designed for main
powers connecting to amplifier. Please
note this connector is combined with
fuse holder and 2A, 250V fuse
Connectors
TR connector
TRS connector
XLR male connector XLR female connector
RCA connector
Cable wiring examples
Cable to balanced input from balanced output. TRS connectors.
Cable to unbalanced input from balanced output. TRS and TS connectors.
Cable to balanced input from unbalanced output. TS and TRS connectors.
Cable to unbalanced input from unbalanced output. TS connectors.
Cable to balanced input from balanced output. XLR connectors.
Cable to unbalanced input from balanced output. XLR and TS connectors.
Cable to balanced input from unbalanced output. TS and XLR connectors.
Cable to balanced input from balanced output. TRS and XLR connectors.
RCA cable.
Cable to unbalanced input from RCA output. RCA and TS connectors.
Cable to balanced input from RCA output. RCA and XLR connectors.
Cable to balanced input from RCA output. RCA and TRS connectors.
Cable to RCA input from balanced output. RCA and XLR connectors.
Cable to RCA input from balanced output. RCA and TRS connectors.
Specifications
Power supply AC 230V, 50 Hz
Rated power 200 W
Frequency response 20 Hz - 130 Hz
Low pass filter 50 Hz - 130 Hz
Driver dimensions 10" (254 mm)
Input gain control - 6 dBu - +3 dBu
Input impedance 10 kΩ
Inputs Inputs Stereo RCA, balanced stereo 6,3 mm TRS
JACK, balanced stereo XLR
Outputs Inputs Stereo RCA, balanced stereo XLR
Dimensions 355 mm x 380 mm x 370 mm
Weight 12 kg
Material Painted MDF
Colour Black (RAL 9017)
The specifications above are correct at the time of printing of this manual. For improvement purposes, all
specifications for this unit, including design and appearance, are subject to change without prior notice.
NOTES:
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AMC is a registered trademark of AMC Baltic www.amcpro.eu
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