Fli Audio FU10 User Manual

UNDERGROUND

INSTRUCTION &

INSTALLATION MANUAL

subwoofer

MODEL: FU10, FU12, FU15

2

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-

LI UNDERGROUND equipme

speaker lead to the car chassis. This can cause

cutting any holes, investigate the layout of your vehicle

correct polarity when wiring, improper phasing may cause

ontact your nearest authorised FLI dealer if you are unsure about the installation o

d enjoyabl

car chas

Thank you for purchasing this FLI UNDERGROUND subwoofer. It will provide you

with years of trouble free usage providing you follow a few simple guidelines.

INTRODUCTION

This instruction manual is for your safety and must be adhered to at all times. Please read

and ensure that you fully understand the installation and set up procedures as explained. If

you are unclear on the installation or set up of your FLI UNDERGROUND subwoofer please

contact your nearest authorised FLI UNDERGROUND dealer.

WARNING

DO NOT EXPOSE THIS PRODUCT TO DAMP OR MOISTURE - doing so may result in fi re,
shock or damage to the product.

BEFORE WIRING DISCONNECT THE CABLE FROM THE POSITIVE BATTERY TERMINAL

- failure to do so may result in electric shock or injury.

ENSURE GOOD AND CORRECT CONNECTIONS - failure to make the correct connections
may result in fi re or damage to the product.

KEEP THE VOLUME AT A LEVEL SO YOU CAN STILL HEAR OUTSIDE NOISE - failure to do
this may result in an accident. FLI UNDERGROUND equipment is capable of producing sound
levels that can permanently damage your hearing. FLI UNDERGROUND recommends caution
when listening at high volume. For safe and enjoyable listening the sound should be comfortable
and clear without distortion.

CAUTION

• Never connect any speaker lead to the car chassis. This can cause severe damage to your
speaker / car radio / amplifi er.

• Before drilling or cutting any holes, investigate the layout of your vehicle thoroughly.

• Use caution when working near the fuel / hydraulic lines and electrical wiring.

• Observe the correct polarity when wiring, improper phasing may cause a loss of bass
response.

• Ensure that no moving parts catch on the speaker or grill (e.g. window or door handles, or
window glass inside the door)

INSTALLATION

• The quality of the installation will affect the system performance and reliability.

• Contact your nearest authorised FLI dealer if you are unsure about the installation of this
product.

• Please mount this unit away from any potential hazards.

• Minimising the length of wires will provide higher audio output from the system.

• The speaker should be securely fastened to the mounting position using the screws
provided.

• Pre drill your mounting holes using a drill and position with the template provided.

• Be sure to investigate your mounting area thoroughly for electrical wires, brake or fuel lines or
fuel tank to prevent causing any damage.

Run in procedure

FLI UNDERGROUND recommends that you follow the run in procedure for the
subwoofer detailed below.

When your subwoofer is used for the fi rst time naturally like most brand new items it is very
stiff and rigid, it will take time for the moving parts of this subwoofer to loosen up before it
will be ready to deliver its full potential.

For the fi rst 30 hours it is recommended that you play the subwoofer initially at low to medium
volumes, gradually increasing the volume level as time progresses. As a guide, if you listen to it for
1 hour every day it will take a month for the speaker to run in properly. You will notice a big change
in the sound of the subwoofer over this period, as the spider and surround begin to run in the sound
will get deeper and punchier, also the output of it will increase as the suspension loosens up.

A new subwoofer is like a new car engine, it needs a few thousand miles before you can drive it to its full
potential, driving it into the ‘red line’ from the fi rst day will mean engine damage is certain and will not be
covered by warranty and the same applies to the subwoofer. Failure to follow this simple procedure is the
most common reason for a subwoofer to fail after a very short period of time.

Installation

The FLI UNDERGROUND subwoofer can be installed in a variety of different ways, the most suitable will
depend upon your application.

3

Free-air installation

The FLI UNDERGROUND subwoofer can be mounted free-air, but this does not mean that the woofer can
work without any form of enclosure. What it does mean is that the enclosure can be very large and therefore
the subwoofer can utilise the vehicle boot as an enclosure.

The subwoofer needs to be mounted to a rigid panel as excess vibration will result in poor sound quality.
The panel or baffl e, should also seal the output from the front of the subwoofer from the output from the rear
otherwise poor sound quality, known as phase error, will occur. This simply means that the output from the rear
of the woofer will cancel out the output from the front resulting in a loss of bass.

As the enclosure in free-air applications is so large it is worth noting that the power handling of the subwoofer is
reduced to half that of the same woofer in a measured enclosure. Please take this into account when choosing
your amplifi er. The sound quality of a free-air mounted subwoofer will not match that of the same subwoofer
mounted in a measured enclosure. However in applications where building a traditional enclosure is impossible,
free-air mounting will add increased bass response to your system.