ENGLISH
OPERATION MANUAL
JB SYSTEMS
®
1/41
D2-900 ~ D2-1200 ~ D2-1500
Thank you for buying this JB Systems
®
product. To take full advantage of all possibilities, please read these
operating instructions very carefully.
FEATURES
This unit is radio-interference suppressed. This appliance meets the requirements of the current European
and national guidelines. Conformity has been established and the relevant statements and documents have
been deposited by the manufacturer.
Professional 2-channel amplifier with built-in active crossover.
Very compact housing, only 2U (88mm) high
Oversized power supply guarantees a powerful bass reproduction
Built-in active crossovers: no need for separate crossover units to setup an active system.
Each channel equipped with a 24dB/octave crossover: adjustable crossover point (90~250Hz) and 3
operation modes: HPF (high pass filter) + LPF (low pass filter) + OFF (no filter)
Two amplifier modes: stereo and bridge
Peak limiters can be switched on/off
Soft start power supply
Very efficient cooling
DC fault protection
High temperature protection
Overload and short circuit protections
Balanced inputs with combo connectors (jack + XLR)
XLR-outputs: daisy chaining of several amplifiers
3 Speakon
®
outputs: left + right ch bridge
3 models with different output power available.
BEFORE USE
Before you start using this unit, please check if there’s no transportation damage. Should there be any, do
not use the device and consult your dealer first.
Important:
This device left our factory in perfect condition and well packaged. It is absolutely necessary
for the user to strictly follow the safety instructions and warnings in this user manual. Any damage caused
by mishandling is not subject to warranty. The dealer will not accept responsibility for any resulting defects
or problems caused by disregarding this user manual.
Keep this booklet in a safe place for future consultation. If you sell the fixture, be sure to add this user
manual.
To protect the environment, please try to recycle the packing material as much as possible.
Check the contents:
Check that the carton contains the following items:
User manual
D2-amplifier
SAFETY INSTRUCTIONS:
CAUTION
CAUTION:
To reduce the risk of electric shock, do not
remove the top cover. No user-serviceable parts inside.
Refer servicing to qualified service personnel only.
The lightning flash with arrowhead symbol within the equilateral triangle is intended to alert the
use or the presence of un-insulated “dangerous voltage” within the product’s enclosure that may
be of sufficient magnitude to constitute a risk of electric shock.
ENGLISH
OPERATION MANUAL
JB SYSTEMS
®
2/41
D2-900 ~ D2-1200 ~ D2-1500
To prevent fire or shock hazard, do not expose this appliance to rain or moisture.
To avoid condensation to be formed inside, allow the unit to adapt to the surrounding temperatures when
bringing it into a warm room after transport. Condense sometimes prevents the unit from working at full
performance or may even cause damages.
This unit is for indoor use only.
Don’t place metal objects or spill liquid inside the unit. No objects filled with liquids, such as vases, shall be
placed on this appliance. Electric shock or malfunction may result. If a foreign object enters the unit,
immediately disconnect the mains power.
No naked flame sources, such as lighted candles, should be placed on the appliance.
Don’t cover any ventilation openings as this may result in overheating.
Prevent use in dusty environments and clean the unit regularly.
Keep the unit away from children.
Inexperienced persons should not operate this device.
Maximum save ambient temperature is 40°C. Don’t use this unit at higher ambient temperatures.
Minimum distances around the apparatus for sufficient ventilation is 5cm.
Always unplug the unit when it is not used for a longer time or before you start servicing.
The electrical installation should be carried out by qualified personal only, according to the regulations for
electrical and mechanical safety in your country.
Check that the available voltage is not higher than the one stated on the rear panel of the unit.
The socket inlet shall remain operable for disconnection from the mains.
The power cord should always be in perfect condition. Switch the unit immediately off when the power cord
is squashed or damaged. It must be replaced by the manufacturer, its service agent or similarly qualified
persons in order to avoid a hazard.
Never let the power-cord come into contact with other cables!
When the power switch is in OFF position, this unit is not completely disconnected from the mains!
This appliance must be earthed to in order comply with safety regulations.
In order to prevent electric shock, do not open the cover. Apart from the mains fuse there are no user
serviceable parts inside.
Never
repair a fuse or bypass the fuse holder.
Always
replace a damaged fuse with a fuse of the same
type and electrical specifications!
In the event of serious operating problems, stop using the appliance and contact your dealer immediately.
Please use the original packing when the device is to be transported.
Due to safety reasons it is prohibited to make unauthorized modifications to the unit.
INSTALLATION GUIDELINES:
Install the unit in a well-ventilated location where it will not be exposed to high temperatures or humidity.
Placing and using the unit for long periods near heat-generating sources such as amplifiers, spotlights, etc.
will affect its performance and may even damage the unit.
The unit can be mounted in 19-inch racks. Attach the unit using the 4 screw holes on the front panel. Be
sure to use screws of the appropriate size. (screws not provided)
Take care to minimize shocks and vibrations during transport.
When installed in a booth or flight case, please make sure to have good ventilation to improve heat
evacuation of the unit.
To avoid condensation to be formed inside, allow the unit to adapt to the surrounding temperatures when
bringing it into a warm room after transport. Condense sometimes prevents the unit from working at full
performance.
CLEANING THE UNIT:
Clean by wiping with a cloth slightly dipped with water. Avoid getting water inside the unit.
Do not use volatile liquids such as benzene or thinner which will damage the unit.
The exclamation point within the equilateral triangle is intended to alert the user to the presence of
important operation and maintenance (servicing) instructions in the literature accompanying this
appliance.
This symbol means: indoor use only
This symbol means: Read instructions
