User manual JBSYSTEMS LIGHT D2 V1.1

[. . . ] Reproduction or publication of the content in any manner, without express permission of the publisher, is prohibited. Dispose of the unit and used batteries in an environment friendly manner according to your country regulations. Thank you for buying this JB Systems product. To take full advantage of all possibilities, please read these operating instructions very carefully. [. . . ] 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. Do not use volatile liquids such as benzene or thinner which will damage the unit. Clean the ventilation holes regularly with a vacuum cleaner. Be sure to turn off the unit before you make changes to the wiring. For the ® speakers you must use the Speakon outputs. In the description of the unit you will find more information on how to connect the amplifier. Basically this is identical to stereo mode but the inputs of both channels are linked so the output will be mono. In this case you only need to use the input of the left channel to drive both output channels. BRIDGE MODE: Both channels are linked in "bridge mode" to obtain a mono output with much higher power. PROTECT LEDS: The protection LED is on when the speakers are disconnected from the amplifier. This occurs in the following situations: During the first seconds after switching on the amplifier. When the temperature of the power stage becomes too high. in case of a technical defect: DC protection!While switching the amplifier off, the "protect led" turns on for a short time. HP FILTER LED: Indicates that the high pass filter (HPF) is switched on for this channel (left and right channels have their own HPF LED) Please refer to numbers 18 and 20 to learn more about this filter. LP FILTER LED: Indicates that the low pass filter (LPF) is switched on for this channel (left and right channels have their own LPF LED) Please refer to numbers 18 and 20 to learn more about this filter. mAINS SWITCH: Used to turn the amplifier on and off. A few seconds after switching on the amplifier it is ready for operation. The blue led is on when you turn the amplifier on. VENTILLATION HOLES: during its operation the amplifier produces heat that needs to be dissipated. [. . . ] see the chapter "How to use" for more information. No filter: use this option if you want to connect a normal full range speaker cabinet to channel1, this is the most common user mode. CH2 FILTER CONTROL: Exactly the same function as described in number 17 but now for channel 2. CH2 FILTER SWITCH: Exactly the same function as described in number 18 but now for channel 2. [. . . ]