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Section 3. - USING SYSTEM CONTROLLERS
JBL’s HLA system requires the use of precision-adjusted system controllers for best results. These devices
combine crossover, signal delay, equalization and limiting functions in a single digitally-controlled analog signal
processing package.
The DSC280 system controller from JBL Professional is recommended for use with the HLA system.
Alternatively, a pair of DSC260 system controllers can be used, or a single DSC260 can be used for 4895’s in fill or
delay speaker applications.
DSC280 Digital System Controller DSC260 Digital System Controller
Using the Model DSC280 Digital System Controller
The DSC280 is a stereo 4-way programmable speaker controller with 60 memory locations. Refer to the
DSC-280 User Manual for complete operating instructions.
On the left of the front panel of the unit, each output has 8-segment LED signal meters and a mute
switch. On the right is the control screen surrounded by its menu keys, function keys, and cursor control.
The Edit key at the bottom right steps through the four display screens for each preset. The Utility key
displays the utility menu that corresponds to each of the four display screens. The Menu keys to the left of the
screen are assigned functions that are labeled on each screen. The Store and Recall keys are also used for
comparing changes made while in Edit mode
There are two switches that control the left and right linking of control. Users are cautioned against
accidentally adjusting only side of the system by inadvertently touching both buttons at once. To operate both
sides of a stereo system in the same manner, make sure that both the “L” and “R” indicators are lit at all times.
Multiple system files
The DSC280 digital controller has 60 user-programmable memories and files with pre-programmed
settings for different JBL products. HLA pre-sets are stored starting in memory location 20. The memory number
is indicated in the upper left corner of the display screen. Each of these files is set to fine tune the system for
particular configurations. Memory locations for different configurations of HLA arrays:
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