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Table of Contents
- 1 Protect Your Hearing
- 2 Installation Applications
- 3 Planning Your Installation
- 4 Product Description
- 5 Typical Installation Sequence
- 6 Power Connections
- 7 Fuse Requirements
- 8 Crossover Controls
- 9 Speaker Outputs
- 10 System Configurations
- 11 Filter Freq
- 12 Appendix C: Trouble Shooting
- 13 Installation Notes
- Download this manual
JL AUDIO 450/4
four-channel system amplifier
o w n e r ' s m a n u a l
Thank you for purchasing a JL Audio amplifier for
your automotive sound system.
Your amplifier has been designed and manufactured to exacting
standards in order to ensure years of musical enjoyment in your
vehicle. For maximum performance and extended warranty
coverage, we highly recommend that you have your new amplifier
installed by an authorized JL Audio dealer. Your authorized
dealer has the training, expertise and installation equipment to
ensure optimum performance from this product. Should you
decide to install the amplifier yourself, please take the time
to read this manual thoroughly so as to familiarize yourself
with its installation requirements and setup procedures.
If you have any questions regarding the instructions in this
manual or any aspect of your amplifier's operation, please contact
your authorized JL Audio dealer for assistance. If you need further
assistance, please call the JL Audio Technical Support Department at
(954) 443-1100 during business hours (Eastern Time Zone).
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Table of Contents
Related Manuals for JL Audio Slash 450/4
Summary of Contents for JL Audio Slash 450/4
- Page 1 If you have any questions regarding the instructions in this manual or any aspect of your amplifier’s operation, please contact your authorized JL Audio dealer for assistance. If you need further assistance, please call the JL Audio Technical Support Department at...
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Page 2: Protect Your Hearing
Cooling Efficiency Considerations: Your JL Audio amplifier employs an advanced type of heat management, called RealSink™.This feature takes advantage of convection and radiation effects to remove heat from the amplifier circuitry. -
Page 3: Product Description
PRODUCT DESCRIPTION TYPICAL INSTALLATION SEQUENCE The JL Audio 450/4 is a four-channel system The following represents the sequence for a amplifier utilizing patented Absolute Symmetry™ typical amplifier installation, using an aftermarket Class AB technology for all channels. All channels source unit. Additional steps and different benefit from JL Audio's exclusive R.I.P.S. -
Page 4: Crossover Controls
CH 1&2 relative to CH 3&4 and other amplifier channels in the system. JL AUDIO 450/4 JL AUDIO 450/4 CROSSOVER CONTROLS Crossovers are groups of individual electronic filters... - Page 5 3) Remote Bass Port: Allows you to connect an optional remote boost knob (sold separately, JL Audio Model RBC-1) that can be mounted in the front of the vehicle. With the RBC-1 connected, the boost is no longer limited to 0 or +6 dB, allowing a range of 0-15 dB of boost to be selected.
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Page 6: Speaker Outputs
If your amplifier fails or malfunctions, please return it to your authorized JL Audio dealer so that it may be sent in to JL Audio for service. There are no user serviceable parts or fuses inside the amplifier.The unique nature of the circuitry in the JL Audio amplifiers requires specifically trained service personnel. -
Page 7: System Configurations
SUBWOOFER AMPLIFIER This configuration requires that the separate subwoofer amplifier has a built-in low-pass filter. All JL Audio subwoofer amplifiers have this feature. In this configuration, CH 1&2 of the 450/4 will drive front component speakers (stereo 150W x 2) with high-pass filtering. - Page 8 THREE-CHANNEL MODE AND A SEPARATE SUBWOOFER AMPLIFIER This configuration requires a separate subwoofer amplifier with a built-in low-pass filter. All JL Audio subwoofer amplifiers have this feature. The separate amplifier will drive the subwoofer system with low-pass filtering (select a filter frequency of 80-90 Hz to start).The inputs of the...
- Page 9 RECOMMENDED) This configuration is identical to the 3.1 system configuration with Input Option A, except for the addition of a JL Audio 300/2 two-channel amplifier to drive rear surround speakers, effectively creating a true 5.1 multi-channel system with left-front, center- front, right-front, left-rear and left-right channels.
- Page 10 500 Hz. Select “HP” (high-pass) on the “Filter Type” switch and “12dB” or “24dB” on the “Filter Mode/Slope” switch and an appropriate “Filter Freq. ” JL AUDIO 450/4 JL AUDIO 450/4 After proper adjustment of the 450/4’s CH 1&2 and CH 3&4, and the subwoofer amplifier’s “Input Range”...
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Page 11: Filter Freq
05 ......59 ease of setup. Because each JL Audio amplifier will 06 ......60 always deliver the same amount of power within its 07 . -
Page 12: Appendix C: Trouble Shooting
“MY AMPLIFIER’S OUTPUT FLUCTUATES WHEN I TAP ON IT OR HIT A BUMP” “HOW DO I PROPERLY SET THE INPUT SENSITIVITY ON MY AMPLIFIER” JL AUDIO 450/4 JL AUDIO 450/4 Check the input signal using an AC voltmeter to measure the... - Page 13 LF Boost: Single-band, fixed-frequency (48 Hz), fixed “Q” +6 dB boost. Defeatable. Port for optional remote bass control to provide variable boost control from 0 to +15 dB. Infrasonic Filter: 24 dB/octave @ 30 Hz, defeatable. JL AUDIO 450/4 JL AUDIO 450/4...
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Page 14: Installation Notes
INSTALLATION NOTES: Use this diagram to document your amplifier’s switch and control positions. JL AUDIO 450/4 JL AUDIO 450/4... - Page 15 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 from the original date of purchase. The warranty term is extended to two (2) years if installation is performed or approved by an authorized JL AUDIO dealer (proof of installation or approval required on purchase receipt).