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Details the frequency response of the crossover system.
Warns about hazardous high voltage and the need for authorized personnel.
States JBL's non-liability for damages from product usage or inability to use.
Lists power, frequency response, sensitivity, and amplifier details.
Details transducer and amplifier components.
Specifies test conditions for aural sweep tests.
Provides enclosure dimensions and net weight.
Explains the importance and methods of connecting audio sources.
Illustrates balanced and unbalanced input connection diagrams.
Explains adjustable input sensitivity via DIP switches.
Visual representation of the system's functional blocks.
Details the power supply circuit and transformer.
Explains the input buffer amplifier stage.
Describes the high-frequency signal processing circuit.
Details the low-frequency signal processing circuit.
Explains the two-pole Butterworth low pass filter.
Describes the low frequency output amplifier with thermal shutdown.
Details the high frequency power amplifier circuit.
Explains the fault detection and LED indicator circuitry.
Covers initial checks for power failure and no output.
Provides signal integrity checks for L/H frequency paths.
Outlines setup and power-up procedures for main amplifier troubleshooting.
Details voltage checks for various supply rails.
Describes testing procedures for the low frequency filter.
Details test procedures for the HF power amplifier.
Explains troubleshooting for LED indicators.
Shows the frequency response of both outputs.
Plots frequency response for the low frequency path.
Plots frequency response for the high frequency path.
Shows frequency response changes based on DIP switch settings.
Shows a visual layout of components on the main board.
Lists part numbers and descriptions for components.
Illustrates the main wiring connections between boards.
Provides pin configurations for various semiconductor devices.
Defines who is covered under the JBL warranty.
Specifies what defects are covered and excluded.
Guides users on how to get warranty service.
Limits implied warranties to the duration of the expressed warranty.
Lists codes for identifying electronic failure types.
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