Kicker KX2500.1 User manual

2KX2500.1 Amplifier

Introduction

KX2500.1

Congratulations!

You have just purchased the latest in amplifier

technology to carry the famous KICKER name.

Your KICKER KX2500.1 amplifier is designed and built

to give you years of powerful and trouble-free

performance in SPL contests and on the street.

Please read this installation manual, it contains

valuable information to help you get the most out of

your new KX2500.1 amplifier.

This is your “fuel for Livin’ Loud ™”!

Attention:

Please record your purchase information in the area

provided below. We recommend attaching the original

sales receipt or a copy of it to this manual for future

reference.

If you require service on this amplifier during the

warranty period, you will need to provide this

information and a copy of the receipt to Kicker to

validate your warranty.

ALWAYS KEEP YOUR RECEIPT!

KX2500.1

Amplifier

Owner’s Manual

Mono-Block Model:

Authorized Kicker Dealer:

Purchase Date:

Amplifier Model Number:

Amplifier Serial Number:

_____________________________________________

KX2500.1

KX2500.1 Amplifier

Features

Class D Mono Amplifier Delivers massive power into a

single channel with greater efficiency than conventional class A/B

amplification.

Low Impedance Operation Designed for stable operation

and maximum power output into a 2 ohm load.

SORT Protection Circuitry (Short circuit, Over-voltage,

Reverse polarity, Thermal) Protects amplifier from accidents and

undesirable operation.

MOSFET Power Supply Provides high efficiency operation.

KickBass Variable bass boost circuit which provides up to

18 dB of boost at 40 Hz.

Full-time Variable Crossover 12dB low pass variable from

50-200Hz.

Subsonic Filter Switchable (ON / OFF) speaker protection

filter set at 12dB/octave @ 25 Hz.

High & Low level inputs Allows connection to various

sources such as: an after-market stereo, factory radio, DVD

Player, Video Cassette Player, etc.

PAST (PRE Amp Signal Transfer) Output RCA jacks to pass the

incoming signal to another amplifier or component.

Custom tooled gold plated connectors Assure

maximum power transfer and clamping.

Remote Bass Level Control Dash or center console

mountable for remote fine-tuning of bass output.

EndKaps Cast aluminum, custom, removable covers to

protect and hide all your wiring connections to the amplifier.

Can be prepped and painted any custom color you choose.

Big Toothy Grin Expression on your face as you and your

friends admire this ‘surfboard’ in your trunk.

Two Year Warranty When purchased from an Authorized

KICKER dealer.

4KX2500.1 Amplifier

Installation

Mounting

When selecting a location to mount your Kicker amplifier be

sure it is structurally sound and that there are no items behind

the area that could be damaged by the screws. Check for wiring

harnesses, brake lines, fuel lines, gas tanks, etc.

All amplifiers generate heat under normal operation. Be sure to

choose a location that allows adequate ventilation for the

amplifier. Also consider that the air temperature inside an

automobile’s trunk can reach upwards of 140 degrees

fahrenheit (60° celsius). An amplifier mounted here may require

additional cooling needs such as fans or venting to allow cool

operation. If possible, mounting the amp in the passenger

compartment will allow cooler operation.

Remember that the controls on top of the amp will need to be

accessible for adjustment later. Keep this in mind as you choose

your amplifiers mounting location.

Now that you are ready to mount your amplifier, use the

supplied 3mm allen wrench to remove the amplifier EndKaps.

This will give you access to the mounting holes in the

amplifier and all wiring connections.

NOTE: Objects in the manual are larger than they appear!

Pictures and diagrams of the massive KX2500.1 in this manual

are not to scale...this was done to prevent having a manual the

size of your average wakeboard.

Remove Remove

Remove

With the shroud removed, drill 4 holes using a 7/64” (2.75 mm)

drill bit and use the supplied #8 screws to mount the amplifier.

KX2500.1 Amplifier

Installation

Wiring

Signal can be input into the amplifier using either the low level

RCA input connections or the high level speaker level

connections. Using the low level RCA connections is the

preferred method. Use the high level inputs only if your head unit

does not have low level RCA type outputs. Connecting to the

amp with either input will provide a low level signal at the output

(PAST) jacks.

SOURCE UNIT

Left +

Left -

Right -

Right +

Speaker

Outputs

RCA

Outputs

WARNING-Use Only One...Never Both At The Same Time !!!

REMOTE

BASS

The use of twisted pair interconnects is recommended for all

installations to minimize noise. When routing these cables

through the automobile, try to keep them away from factory

wiring harnesses and other power wiring. If you need to cross

any of this wiring do so at a 90 degree angle to reduce the

possibility for noise problems.

When working with power connections it is always

recommended that you disconnect the battery to prevent

accidents.

The ground should be connected to the amplifier first before

making any of the other connections. This wire should be as

short as possible (36 inches or less) and connected to a paint

and corrosion free solid metal area of the car’s chassis.

Use the same gauge wire as recommended for the amplifier’s

power connection to the battery. Adding an additional ground

wire between the car battery’s negative post and the car chassis

of this same gauge (or larger) is highly recommended. Adding or

upgrading the ground from the case of the alternator to the car

chassis is also recommended.

If you ever need to remove the amp from the vehicle after it

has been installed, the ground wire should be the last wire

disconnected from the amplifier. Just the opposite as when you

installed it.

The supplied ANL fuse holder and fuse must be installed within

18 inches of the battery to protect the power wire feeding your

amplifier.

The Remote Turn-On lead gets connected to your source unit’s

power antenna lead or another switched + 12 volt source in your

vehicle.

Model Fuse Size Wire Gauge

KX2500.1 300 Amp 1/0 Ga

To Chassis Ground

To + Post On Battery FUSE

To Speaker - Terminal

To Speaker + Terminal

Remote Turn-On

LED Status

Indicators

NOTE 1: Supplied with amplifier.

300 amp ANL type fuse with holder.

Wire within 18" of the battery.

NOTE 1

6KX2500.1 Amplifier

Installation

BIG AMP AHEAD

Just in case you missed it at the time of purchase, this is a BIG amplifier that will create BIG power. For an amplifier to

produce 2500 watts of output power it requires a solid electrical system feeding it and a solid delivery system to your speakers. What

this means is you have to use the appropriate wire and accessories with this amplifier to insure optimum performance and durability.

We recommend using Genuine Kicker Installation Accessories. Visit your local dealer or visit www.Kicker.com to learn more.

Kicker highly recommends the following:

 An alternator with a minimum 140 amp output capacity.

 At least one extra battery located close to the amplifier.

 1/0 gauge power and ground feeds to the extra battery.

 Proper fusing as per diagram below.

 Short as possible power and ground feeds to the amplifier.

 Aminimum of 12 gauge speaker wire from amp to speakers. Up to 8 Gauge can be used and is recommended.

 Earplugs.

GROUND

+12V

MAIN

BATTERY

Engine

Compartment

FUSE

18"

or less

REMOTE

TURN-ON

1/0 Gauge

18 Gauge

KICKER

300 A

+12V

AUXILARY

BATTERY

In Trunk

FUSE

KICKER

300 A

1/0 Gauge

18"

or less

KICKER

300 A

1/0 Gauge

Total length of cable from

Auxilary Battery to Amplifier

not to exceed 6 feet.

1/0 Gauge

Total length of Ground Cable

not to exceed 3 feet.

12-8 Gauge

0 G

ALTERNATOR

140 Amp Minimum

KX2500.1 Amplifier

Installation

System Diagrams

The following diagrams shows the most common configurations for your Kicker KX2500.1 series amplifier.

MONO CHANNEL OPERATION

The KX2500.1 amplifier is capable of operating into a minimum impedance of 2 ohms (Ω). If you are using a single voice coil

woofer be sure the impedance of the voice coil is equal to or greater than 2Ω. If using dual voice coil subwoofer or driving

multiple subwoofers, be sure the net impedance presented to the amplifier is at least 2Ωor greater.

GROUND

FUSE

REMOTE

TURN-ON

SUBWOOFER(s)

1/0 Gauge

18 Gauge

2Ω

TO + 12 VOLT

POWER SOURCE

KICKER

300 A

SIGNAL

OUT

NOTE: For maximum performance from your Kicker KX2500.1 amplifier,

we recommend using Genuine Kicker Installation Accessories.

Visit your local dealer or visit www.Kicker.com to learn more.

8KX2500.1 Amplifier

Installation

TWO KX2500.1 AMPLIFIERS & ONE DVC SUBWOOFER

This diagram shows how to power a single Dual Voice Coil (DVC) subwoofer using two KX2500.1 amplifiers. For maximum power

output from your KX2500.1 to the subwoofer each voice coil should be 2Ωimpedance. Do not connect to voice coils with an

impedance lower than 2Ω!

Be sure to properly power and ground each amplifier according to the minimum specifications shown on page 6 to insure proper

operation and maximum power output.

NOTE: The gain setting/output level on both amplifiers must be matched for proper operation. If the output level of both amplifiers is

not matched this will result in poor performance and possible damage to your subwoofer.

To properly set the levels you will need a test CD containing a 60 Hz test tone and a digital volt meter. Play the 60 Hz tone through

your CD player set at a low to moderate volume level. Next, measure the AC voltage output across each amplifier’s positive (+) and

negative (-) speaker output terminals. Turn the gain down on the amplifier which reads higher until it matches the other amplifier.

Coil 2 +

Coil 1 +

Coil 1 -Coil 2 -

Signal

OUT

Signal

AC Volt

5.50

AC Volt

5.50

KX2500.1 Amplifier

Installation

ONE SUBWOOFER

For maximum power into a single subwoofer you will need a 2ΩSingle Voice Coil (SVC) subwoofer OR a 4ΩDual Voice Coil

(DVC) subwoofer.

Coil +

Coil -

Coil 2 +

Coil 1 +

Coil 1 -Coil 2 -

Single 2ΩSVC Single 4ΩDVC - Parallel Wired

TWO SUBWOOFERS

For maximum power into a pair of subwoofers you will need two 4ΩSingle Voice Coil (SVC) subwoofers OR two 2ΩDual Voice

Coil (DVC) subwoofers.

Coil +

Coil -

Coil +

Coil -

Coil 2 +

Coil 1 +

Coil 1 -

Coil 2 -

Coil 2 +

Coil 1 +

Coil 1 -

Coil 2 -

Two 4ΩSVC - Parallel Wired Two 2ΩDVC - Series/Parallel Wired

10 KX2500.1 Amplifier

Installation

FOUR SUBWOOFERS

For maximum power into a quad set of subwoofers you will need four 8ΩSingle Voice Coil (SVC) subwoofers OR four 4ΩDual

Voice Coil (DVC) subwoofers.

Coil +

Coil -

Coil +

Coil -

Coil +

Coil -

Coil +

Coil -

Four 8ΩSVC - Parallel Wired

Coil 2 +

Coil 1 +

Coil 1 -

Coil 2 -

Coil 2 +

Coil 1 +

Coil 1 -

Coil 2 -

Coil 2 +

Coil 1 +

Coil 1 -

Coil 2 -

Coil 2 +

Coil 1 +

Coil 1 -

Coil 2 -

Four 4ΩDVC - Series/Parallel Wired

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