Ultimate Sound UHC-4 Owners manual

HIGH CURRENT POWERHIGH CURRENT POWER

UHC5UHC5

2 CHANNEL AMPLIFIER

UHC4UHC4

UHC2UHC2

AMPLIFIERSAMPLIFIERS

1 X 150 + 4 X 60W RMS
5 CHANNEL AMPLIFIER

4 X 60W RMS
4 CHANNEL AMPLIFIER

2 X 60W RMS

ULTIMATE

138 University Parkway

Pomona, CA 91768

Toll Free: 888-909-9988

Telephone: [phone]

Fax: [phone]

®

INTRODUCTION

I. Description

This device is a high power, audio amplifier. Use it responsibly. Very
loud music can cause permanent hearing loss. This amplifier is intended
for installation in vehicles with a 12-Volt, negative ground electrical
system. Attempting to connect or operate the amplifier in another type of
electrical system may cause damage to the amplifier or the electrical
system.

II. About This Manual

Read the Instructions-

Be sure that you have read all operating instructions and understand all
safety precautions before installing and operating the amplifier. We
recommend that you have your UHCUHC amplifier installed by a specialist.

Follow the Instructions-

The instructions are intended to help you safely obtain the best
performance from the amplifier. Carefully follow all installation and
operating instructions.

Save the Operating Manual-

Keep the manual in a safe place after installing the amplifier. You may
have questions later.

Text Conventions used in this Manual-

Bold-

Headings and important information.

Bold, Underlined-

Very important information.

"Bold"-

As labeled on the amplifier, or quoted from elsewhere in this
manual.

III. Safety and Operating Precautions-

Caution!

This symbol warns the user of a potential risk or hazard if instructions
are not followed.

⇒ This arrow symbol points to a specific instruction for avoiding a

potential hazard.

ii

1. Installation

1.1 Installation- Mounting the Amplifier
Step 1- Disconnect the negative (-) battery cable before mounting the

amplifier or making any connections. Check the battery and alternator
ground (-) connections. Make sure they are properly connected and free
of corrosion
Step 2- Choose a mounting location for your amplifier. Find a location
on a flat surface away from heat and moisture. Be sure the mounting
location and the drilling of pilot holes for mounting will not present a
hazard to any wires, control cables, fuel lines, fuel tanks, hydraulic lines,
or other vehicle systems or components. Common mounting locations are
under the front passenger seat, or in the trunk area. Choose a location
with unimpaired air circulation. The amplifier will dissipate heat more
efficiently if mounted vertically.
Step 3- Use the supplied screws and rubber bushings. Press the rubber
bushings into the mounting holes at each end of the amplifier. Place the
amplifier in the mounting location, and mark the positions of the holes
with a marker, pen or pencil. Carefully drill the mounting holes in the
marked positions.

Caution!
⇒ Check carefully before drilling any pilot holes.
Step 4- Use the supplied mounting screws to securely fasten the amplifier

to the mounting surface.

1

Step 5- Use the supplied Allen head screws to mount the end caps to the

ends of the main heat sink.
Step 6- Use the supplied screws to attach the end caps to the mounting
surface.

Caution!

⇒ Make sure to mount the amplifier using the supplied screws and

rubber bushings. Do not mount the amplifier by the end caps alone.

1.2 Installation- Power Connections
Step 1- Run a power cable from the battery to the amplifier mounting

location. Use rubber grommets to protect the cable anywhere it has to go
through metal.

UHC5, UHC4 UHC5, UHC4 - Use #4 AWG or larger power and ground cable.
UHC2UHC2 - Use #8 AWG or larger power and ground cable.
Step 2- Connect one end of an in-line fuse holder to the power cable.

Connect the other end of the fuse holder to the positive battery post with
20 cm (or less) of the same cable. This fuse location will protect the
system and the vehicle against the possibility of a short circuit in the
power cable. Be sure to use a fuse and fuse holder adequate for the
application. Do not place a fuse in the holder at this time. The fuse
rating is depending on the power- and ground cable size. The maximum
fuse rating for each amplifier in the UHCUHC series is:

UHC5 UHC5 -- 80 Amp UHC4UHC4 -- 80 Amp UHC2UHC2 -- 40 Amp
Caution!

⇒ Bridging fuses or replacing a fuse with one of a higher rating may

cause damage to the amplifier and the vehicle's electrical system.

Step 3- Run a remote turn on cable from the switched +12V source you
will be using to turn on the system components. This may be a toggle
switch, a relay, or your source unit’s remote trigger wire, or power
antenna trigger wire. Run this lead to the amplifier mounting location.
Use #18 AWG wire or larger.
Step 4- Locate a secure grounding connection as close to the amplifier as
possible. Make sure the location is clean and provides a direct electrical
connection to the frame of the vehicle. Connect one end of a short piece
of the same size cable as the power cable to the grounding point. Run the
other end of the cable to the amplifier mounting location.

Step 5- connect the ground cable to the screw terminal labeled
“POWER, (GND)”.

Step 6- Connect the power cable to the amplifier at the screw terminal
labeled “POWER, +12V”.

2

Step 7- Connect the remote turn on cable to the screw terminal labeled

UHC4UHC4

UHC5UHC5

“POWER, (REM)”.

1.3 Installation- Speaker Connections
Step 1- Run #16 AWG or larger connecting wire from your speakers to

the amplifier mounting location. Keep speaker wires away from power
cables and amplifier input cables. Use grommets anywhere the wires have
to pass through holes in the metal frame or sheet metal. Connect to the
speakers according to the type of terminals on each speaker.
Step 2- Strip 3/8" of insulation from the end of each wire and twist the
wire strands together tightly. Make sure there are no stray strands that
might touch other wires or terminals and cause a short circuit.
Step 3- Crimp spade lugs over the wire ends or tin the ends with solder to
provide a secure termination.

Step 4- Connect the wire ends to your amplifier as follows:

UHC5UHC5, , UHC4UHC4- "FRONT" and "REAR" SPEAKER

TERMINALS

FRONT

SPEAKER

(L+) (L-) (R+) (R-)

( + ) ( - )

BRIDGE

Follow the left, (L+) (L-),
and right, (R+) (R-),
channel and polarity
markings, making sure they
match the channel and
polarity of the connections
at the speakers.

SPEAKER

(L+) (L-) (R+) (R-)

( + ) ( - )

BRIDGE

SPEAKER

(L+) (L-) (R+) (R-)

FRONT

REAR

( + ) ( - )

BRIDGE

REAR

3