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limited warrantY - amPliFiers (usa)

JL AUDIO warrants this product to be free of defects in materials and workmanship for a period of two 

(2) years. The warranty is extended to three (3) years total if installation is performed by an authorized  
JL Audio dealer using a JL Audio Premium Power Connection System for power wiring.

This warranty is not transferable and applies only to the original purchaser from an authorized  

JL AUDIO dealer. Should service be necessary under this warranty for any reason due to manufacturing 
defect or malfunction, JL AUDIO will (at its discretion), repair or replace the defective product with new 
or remanufactured product at no charge. Damage caused by the following is not covered under warranty: 
accident, misuse, abuse, product modification or neglect, failure to follow installation instructions, 
unauthorized repair attempts, misrepresentations by the seller. This warranty does not cover incidental 
or consequential damages and does not cover the cost of removing or reinstalling the unit(s). Cosmetic 
damage due to accident or normal wear and tear is not covered under warranty. 
 

warranty is void if the product’s serial number has been removed or defaced. 

Any applicable implied warranties are limited in duration to the period of the express warranty as 

provided herein beginning with the date of the original purchase at retail, and no warranties, whether 
express or implied, shall apply to this product thereafter. Some states do not allow limitations on implied 
warranties, therefore these exclusions may not apply to you. This warranty gives you specific legal rights, 
and you may also have other rights which vary from state to state.

if you need service on your Jl audio product:

All warranty returns should be sent to JL AUDIO ’s Amplifier Service Facility freight-prepaid through 

an authorized JL AUDIO dealer and must be accompanied by proof of purchase (a copy of the original 
sales receipt). Direct returns from consumers or non-authorized dealers will be refused unless specifically 
authorized by JL AUDIO with a valid return authorization number.

Warranty expiration on products returned without proof of purchase will be determined from the 

manufacturing date code. Coverage may be invalidated as this date is previous to purchase date. Non-
defective items received will be returned freight-collect. Customer is responsible for shipping charges and 
insurance in sending the product to JL AUDIO. Freight damage on returns is not covered under warranty.

 

For service information in the u.s.a. please call

Jl audio Customer service

: (954) 443-1100  

9:00 AM – 5:30 PM (Eastern Time Zone) 

Jl audio, inc

 

10369 North Commerce Pkwy.

Miramar,  FL 33025

(do not send product for repair to this address)

international warranties: 

 

Products purchased outside the United States of America are covered only  

by that country’s distributor and not by JL Audio, Inc.

Absolute Symmetry™ Class A/B Amplifier Circuit is covered by U.S. Patent #6,294,959 and is pending in the 
countries listed below. 

 

Austria, Belgium, Brazil, Canada, China, France, Germany, Indonesia, Italy, Japan, Republic of Korea, 

Mexico, Netherlands, Norway, Russian Federation, Singapore, Sweden, Switzerland, United Kingdom, and all other PCT countries.

Printed in China

 

300/4v3MAN-CH-01-2012

Summary of Contents for 300/4v3

Page 1: ...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 tak...

Page 2: ...tinuous exposure to high sound pressure levels can lead to permanent irreparable hearing loss This and all other high power amplifiers are capable of producing such high sound pressure levels when con...

Page 3: ...on appropriate power connections and fuse protection Product Description The JL Audio 300 4v3 is a four channel full range amplifier utilizing patented Absolute Symmetry Class A B technology for all c...

Page 4: ...sing a solid piece of sheet metal in the vehicle The surface of the sheet metal should be sanded at the contact point to create a clean metal to metal connection between the chassis and the terminatio...

Page 5: ...r to overheat Do not do this Instead use a Y Adaptor to split the mono signal into both left and right RCA inputs 2 Filter Slope Control This switch allows you to select from two filter slopes for tha...

Page 6: ...to the rear inputs select 4ch on the Input Mode switch in the Front Input Section Res ult in this mode the user has the ability to control the absolute level of the LF channels relative to the HF cha...

Page 7: ...ar Filter Controls Select x1 on the Freq Range switch LP low pass on the Filter Mode switch and 12dB or 24dB on the Filter Slope switch and an appropriate Filter Freq 80 90 Hz is a good starting point...

Page 8: ...frequency range to be amplified by each set of channels at 3 4 source unit volume 7 Connect the AC voltmeter to the Front Speaker Outputs or Rear Speaker Outputs connectors of the amplifier If the ch...

Page 9: ...Bridged 6 100W x 1 set to 24 6V Bridged 4 150W x 1 set to 24 6V Bridged 6 100W x 1 set to 21 2V Bridged 3 150W x 1 set to 21 2V Appendix C Input Sensitivity Level Setting Reference Listings 1 Define...

Page 10: ...er Marking Freq Full counter clockwise 58 01 58 02 50 58 03 58 04 58 05 59 06 60 07 61 08 60 63 09 65 10 67 11 69 12 71 13 74 14 75 77 15 80 16 82 17 85 18 90 19 93 20 95 97 21 102 22 107 23 113 24 12...

Page 11: ...king a good connection with the metal inside the terminal block The speaker wire connectors are designed to accept up to 8 AWG wire Make sure to strip the wire to allow for a sufficient connection wit...

Page 12: ...t Voltage Input Sens Input Mode 12dB 24dB Filter Mode Off LP HP x1 x10 Low High Rear Input Section Left Ch Right Ch Input Voltage Input Sens Low High 2ch 4ch 50 60 75 95 130 200 500 300 4v3 Four Chann...

Page 13: ...clusions may not apply to you This warranty gives you specific legal rights and you may also have other rights which vary from state to state If you need service on your JL AUDIO product All warranty...

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