JL Audio 450/4V2 User Manual

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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.
OWNER’S MANUAL
four-channel system amplifier