JL Audio Slash v2 300/4V2 User Manual

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 full-range amplifier

JL Audio Slash v2 300/4V2 Specifications

General

Input Sensitivity	200mV - 4V
Input Voltage Range	200mV - 4V
Fuse Rating	30A
Power Output (RMS)	75W x 4 @ 4Ω, 150W x 4 @ 2Ω, 300W x 2 @ 4Ω (bridged)
Total Harmonic Distortion	<0.03% @ 4Ω (full rated power)
Crossover	12 dB/octave high-pass and low-pass
Dimensions	2.25" x 9.75" x 12.5"
Weight	7.5 lbs
Dimensions (H x W x D)	2.36" x 10.6" x 8.5" (60mm x 269mm x 216mm)
THD at Rated Power	<0.03%

Summary

Owner's Manual Introduction

Product Welcome and Overview

Thank you message and basic description of the JL Audio 300/4v2 amplifier.

Installation Planning and Safety

Hearing Protection Warning

Safety advice on limiting continuous exposure to high sound pressure levels.

Installation Applications

Information on vehicle compatibility and system requirements for the amplifier.

Planning Your Installation

General preparation and considerations for installing the amplifier.

Cooling, Safety, and Mistakes

Covers cooling, general safety, and common installation mistakes to avoid.

Product Description and Power

Product Description

Detailed description of the JL Audio 300/4v2 four-channel amplifier.

Typical Installation Sequence

Step-by-step guide for installing the amplifier.

Power Connections

Instructions for connecting the amplifier's power wires.

Fuse Requirements

Information regarding the necessary fuse ratings for the amplifier.

Input and Control Setup

Turn-On Lead Connection

How to connect the remote turn-on lead for amplifier activation.

Input Sections Configuration

Setting input voltage range and sensitivity for front/rear channels.

Crossover Controls Explained

Functionality and settings of the amplifier's crossover filters.

Advanced Controls and Speaker Output

Filter Controls Details

Explains filter slope, frequency range, and cutoff frequency selection.

Speaker Output Configuration

How speaker impedance affects amplifier output and performance.

Bridging Considerations

Guidance on bridging amplifier channels for higher power output.

Operation Monitoring and System Setups

Status Indicator Lights

Explanation of the amplifier's LED indicators for status and protection.

Servicing Your Amplifier

Instructions for obtaining service or repair for the amplifier.

System Configurations Overview

Introduction to various system configurations the amplifier supports.

Bi-Amplified System Configurations

Detailed explanation of bi-amplified system setups.

Advanced System Configurations

Bi-Amplified System Crossover Setup (Single Amp)

Crossover settings for a bi-amp system using one 300/4v2.

Bi-Amp Systems with Separate Subwoofer Amp

Using the 300/4v2 with an external sub amp, including input options.

Appendices and Specifications

Input Sensitivity Level Setting

Procedure for setting input sensitivity for maximum low-distortion output.

300/4v2 Specifications

Technical specifications of the amplifier, including power and dimensions.

Input Sensitivity Reference Listings

Optimum Configurations Reference

Target voltages for setting input sensitivity in optimum configurations.

Sub-Optimum Configurations Reference

Target voltages for setting input sensitivity in sub-optimum configurations.

Troubleshooting Guide

Amplifier Not Turning On

Steps to diagnose why the amplifier does not power on.

Distorted or Attenuated Sound

Troubleshooting steps for distorted or low output sound.

Fluctuating Output

Diagnosing intermittent output issues related to bumps or taps.

Intermittent Shut-off

Troubleshooting amplifier shut-off issues, often related to voltage.

Limited Warranty Information

USA Limited Warranty

Details of the warranty terms and conditions for USA purchases.

Service Information

Contact information and procedures for obtaining warranty service.