Notice JB SYSTEMS VX-700

« that the carton contains the following items: • Power amplifier • Operating instructions • Mains power cable. ENGLISH OPERATION MANUAL JB SYSTEMS 2/35 VX - AMPLIFIERS SAFETY INSTRUCTIONS: CAUTION: To reduce the risk of electric shock, do not remove any 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. 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. To prevent fire or shock hazard, do not expose this appliance to rain or moisture. Do not place metal objects or spill liquid inside the turntable. Electric shock or malfunction may result. SOME IMPORTANT INSTRUCTIONS: • Always install this appliance in a well vented place. Avoid presence of heat sources. Avoid places that are dusty and humid. • Don’t cover any ventilation openings as this may result in overheating. • Keep this booklet in a safe place for future consultation. If you sell the fixture, be sure to add this user manual. • 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 unit. Electric shock or malfunction may result. • To protect the environment, please try to recycle the packing material as much as possible. 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. Clean the ventilation holes regularly with a vacuum cleaner. This increases the cooling capacity of the amplifier fans and helps preventing temperature overheat. CONNECTIONS Be sure to turn off the unit before you make changes to the wiring. For the signal inputs we recommend using the XLR-connections. Use good quality signal cables to ensure excellent audio quality. For example use JB cables with order codes: 7-0061 (XLR/XLR L=1m) or 7-0063 (XLR/XLR L=5m). For the speakers we suggest using the Speakon® compatible outputs. Suitable cables are for example JB order codes: 2-0505 (L=5m) or 2- 0510 (L=10m). CAUTIONENGLISH OPERATION MANUAL JB SYSTEMS 3/35 VX - AMPLIFIERS FRONT PANELS 1. POWER LED: This blue led is on when you turn the amplifier on using switch(2). 2. MAINS SWITCH: Used to turn the amplifier on and off. A few seconds after switching on the amplifier it is ready for operation. 3. GAIN CONTROLS: These potentiometers are used to control the input sensitivity of the amplifier. Each channel has its own control. You can use these controls to set the maximum sound level of your setup: • Turn both controls on the amplifier (3) to the left. • Put on some music on and make sure the VU meters on your mixer are at 0dB. (from time to time the red zone is lit) • Set the Master output from your mixer to maximum. • Open the Gain controls from the amplifier (3) until th... »