Before Use; Safety Instructions - JB Systems KM4.1 Mode D'emploi

ENGLISH
OPERATION MANUAL
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.
 Echo unit combined with small audio mixer, perfect for karaoke
 Echo can be used on both micro inputs or via effect sends on adapted mixers
 Adaptable delay range: 0-400ms and 400-800ms
 1 master output with level control
 Mono/stereo switch on master output
 2 line inputs with level control
 2 microphone inputs with level control
 3band equalizer on both microphone inputs
 Automatic talkover triggered by both microphone inputs

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:
 DE600/KM4.1 unit
 Mains cable
 Operating instructions

SAFETY INSTRUCTIONS:

CAUTION
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.
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
 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.
JB SYSTEMS
OPERATION MANUAL
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.
1/20 KM4.1 / DE600 MIXER+ECHO
ENGLISH
 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.
Some important instructions:
 Choose the place where you put your installation very carefully. Avoid presence of heat sources.
Avoid places with vibrations or places that are dusty and humid.
 To prevent fire or shock hazard, do not expose this appliance to rain or moisture.
 In order to prevent electric shock, do not open the enclosure. If a problem occurs, contact your
dealer.
 Do not place metal objects or spill liquid inside the mixer. Electric shock or malfunction may result.
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
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 APPLIANCE:
Clean by wiping with a polished 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.
JB SYSTEMS
OPERATION MANUAL
appropriate size. (screws not provided)
2/20 KM4.1 / DE600 MIXER+ECHO