Jl-audio A1400 User Manual Page 1

Thank you for purchasing a JL Audio amplifier for your automotive sound system. Your amplifier has been designed and manufactured to exacting standard

JL AUDIO A1400 1918 JL AUDIO A1400INSTALLATION NOTES: INSTALLATION NOTES:

LIMITED WARRANTY  AMPLIFIERS USAJL AUDIO warrants this product to be free of defects in materials and workmanship for a period of ninety (90) days

PLANNING YOUR INSTALLATIONIt is important that you take the time to read this manual and that you plan out your installation carefully. The following

POWER CONNECTIONSBefore installing the amplifier, disconnect the negative (ground) wire from the vehicle’s battery. This will prevent accidental damag

AMPLIFIER CONTROLS1) “Input Sens.”: Once the appropriate “Input Voltage” range has been selected, the control labeled “Input Sens.” located in the “A

The preamp output signal is not affected by the “Bass Boost” processing selected for the amplifier or by any crossover filter selected (if the input s

JL AUDIO A1400 1110 JL AUDIO A1400SERVICING YOUR JL AUDIO AMPLIFIERIf your amplifier fails or malfunctions, please return it to your authorized JL A

APPENDIX B: Precise Frequency Selection Chart“FILTER FREQ” AMP FILTER Detent Panel Actual Number Marking Freq. Full counter-clockwise: 42 01 . .

JL AUDIO A1400 15“My amplifier shuts off once in a while, usually at higher volumes” Check your voltage source and grounding point. The power supply

JL AUDIO A1400 1716 JL AUDIO A1400INSTALLATION NOTES:Use this diagram to document your amplifier’s switch and control positions.Bass Boost ControlsI