JL Audio 300/2 User Manual download pdf (Page 2)

PLANNING YOUR INSTALLATION

It is important that you take the time to read

this manual and that you plan out your installation

carefully.The following are some considerations

that you must take into account when planning

your installation.

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.

For optimum cooling performance, the vertical heat

sinks located at the back of the amplifier should be

exposed to as large a volume of air as possible.

Enclosing the amplifier in a small, poorly ventilated

chamber can lead to excessive heat build-up and

degraded performance. If an installation calls for an

enclosure around the amplifier, we recommend that

this enclosure be ventilated with the aid of a fan. In

normal applications, fan-cooling is not necessary, but

you still need to follow some basic guidelines:

• Amplifier mounted vertically with heat sink fins

pointing up: Optimum

• Amplifier mounted horizontally,

right side up: Good

• Amplifier mounted horizontally, but upside down:

Fair (not recommended if there is less than 1 inch

(2.5 cm) clearance above the amplifier heat sinks)

• Amplifier mounted vertically with heat sink fins

pointing laterally: Fair

• Amplifier mounted vertically with heat sink fins

pointing down: Poor (not recommended)

If mounting the amplifier under a seat, make sure

there is at least 1 inch (2.5 cm) of space above the

amplifier heat sink fins to permit proper cooling.

Safety Considerations:

Your amplifier needs to be installed in a dry,

well-ventilated environment and in a manner

which does not interfere with your vehicle’s safety

equipment (air bags, seat belt systems, ABS brake

systems, etc.).You should also take the time to

securely mount the amplifier using the supplied

screws so that it does not come loose in the event

of a collision or a sudden jolt to the vehicle (15 lbs.

of aluminum traveling at 60 MPH will hurt you).

Stupid Mistakes to Avoid:

• Check before drilling any holes in your vehicle to

make sure that you will not be drilling through a

gas tank, brake line, wiring harness or other vital

vehicle system.

• Do not run system wiring outside or underneath

the vehicle.This is an extremely dangerous

practice which can result in severe damage to

your vehicle and person.

• Protect all system wires from sharp metal

edges and wear by carefully routing them,

tying them down and using grommets and

loom where appropriate.

• Do not mount the amplifier in the engine

compartment, under the vehicle, on the roof

or in any other area that will expose the amplifier

circuitry to the elements.

JL AUDIO 300/2 3

Preamp Output

Signal Selector

(pg. 9)

Input Voltage

Range Selector

(pg. 7)

Filter Slope

Selection

(pg. 8)

Filter Frequency

Range Selector

(pg. 8)

Input Sensitivity

Control

(pg. 7)

Left and Right

Preamp Output Jacks

(pg. 9)

Left and Right

Input Jacks

(pg. 7)

Speaker Outputs

(pg. 9)

Filter

Cutoff

Frequency

Selector

(pg. 8)

Filter

Mode

Selector

(pg. 8)

Remote Turn-On

Connector

(pg. 6)

Chassis Ground

Connector

(pg. 5)

+12 V Power

Connector

(pg. 5)

PROTECT YOUR HEARING!

We value you as a long-term customer. For that

reason, we urge you to practice restraint in the

operation of this product so as not to damage your

hearing and that of others in your vehicle. Studies

have shown that continuous 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 connected to a speaker

system. Please limit your continuous exposure to

high volume levels.

While driving, operate your audio system in a

manner that still allows you to hear necessary noises

to operate your vehicle safely (horns, sirens, etc.).

SERIAL NUMBER

In the event that your amplifier requires service

or is ever stolen, you will need to have a record of

the product’s serial number. Please take the time to

enter that number in the space provided below.

The serial number can be found on the bottom

panel of the amplifier and on the amplifier packaging.

Serial Number:

_______________________________

INSTALLATION APPLICATIONS

This amplifier is designed for operation in vehicles

with 12V, negative-ground electrical systems. Use of

this product in vehicles with positive ground and/or

voltages other than 12V may result in damage to the

product and will void the warranty.

This product is not certified or approved for

use in aircraft.

Do not attempt to “bridge” the outputs of this

amplifier with the outputs of a second amplifier,

including an identical one.

2 JL AUDIO 300/2

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JL Audio 300/2 User Manual Page 2

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