High-fidelity power that fits almost anywhere

Kicker's 11IX500.4 4-channel amplifier delivers 75 watts RMS to each of your car's front and rear speakers so you can enjoy a big kick to your music. If you're more interested in a low-frequency blast, this compact IX Series amp can also power a pair of subs with 250 watts RMS each. High- and low-pass filters, along with front and rear bass boosts, help you get the best out of your speakers. Noise-reducing technology removes interference from your car's electrical system, so that your speakers and subs see the purest signal possible.

Dependable, efficient, and cool

This amp's compact chassis hides a technical powerhouse. It uses the same voltage-boost technology found in some electric-hybrid vehicles to achieve over 90% efficiency — which means you get more power from a smaller, cooler amp. Kicker combined this high-current design with Class D technology to unleash more wattage per cubic inch than just about any other amp around. And an IX Series amp runs so cool you can stack multiple amps together for a professional-looking installation.

11iX500.4 control panel

11iX500.4 control panel

Product Highlights:

  • 4-channel car amplifier
  • 75 watts RMS x 4 at 4 ohms (125 watts x 4 at 2 ohms)
  • 250 watts RMS x 2 in bridged mode (4-ohm stable in bridged mode)
  • variable high- and low-pass filters (50-200 Hz at 12 dB per octave)
  • variable bass boost (0-18 dB at 40 Hz) on front and rear channels
  • full-range Class D design
  • CEA-2006 compliant
  • balanced differential inputs
  • speaker-level inputs (optional wire adapter required)
  • preamp inputs and outputs
  • 4-gauge power and ground leads and a 50-amp fuse recommended — wiring and hardware not included with amplifier
  • no onboard fuses — when installing multiple amps in a system, an additional 50-amp in-line fuse between the distribution block and the amplifier is recommended
  • optional IX mounting kit required for stacking amps
  • 11-3/8"W x 2-3/16"H x 8-3/4"D
  • warranty: 2 years (extends to 3 years when purchased with either a Kicker single amp wiring kit or a Kicker multi-amp kit)
  • Our 60-day money-back guarantee

My system has plenty of power. Who needs an amp?

You might think you don't need an amp because you have a 400-watt system in your car, or because your new stereo puts out 50 watts a channel. But those are peak wattage ratings, which may boil down to 15 or 20 watts per channel, using the more realistic RMS rating. An amp sends your speakers the power they need to deliver your music with clarity and impact, whether you're using factory speakers or high-performance components. And low-frequency reproduction requires lots of power, so an amp is an absolute must if you're adding a sub to your system.

Hands-on research

What's in the box?

Download owner's manual

  • 4-Channel amplifier
  • Four 2" self-tapping screws
  • 4 Flat washers
  • 3mm Allen wrench
  • Owner's manual (English/ Spanish/ German/ French)
  • Power certification

Product Research

Features
Connections

Features

Class D Amplifier Design: The Kicker IX500.4 is a full-range Class D amplifier, which uses digital switching to amplify audio signals. This design results in high efficiency and minimal heat output. The Class D design also allows the IX500.4 to have a very small footprint for ease of installation.

CEA 2006 Compliant: The Kicker IX500.4's power and signal to noise ratio are measured according to CEA 2006 standards (Consumer Electronics Association). These standards allow you to accurately compare the specifications of all CEA 2006-compliant amplifiers, even if they are different brands. Manufacturers who adhere to the standards can display the CEA 2006 logo on their products and packaging. The amplifier can handle impedance loads down to 2 ohms in stereo, 4 ohms bridged. The rated power output is 75 watts RMS x 4 channels into 4Ω (20 Hz-20 kHz, <1% THD+N), 125 watts RMS x 4 channels into 2Ω (20 Hz-20 kHz, <1% THD+N), and 250 watts RMS x 2 channels into 4Ω (20 Hz-20 kHz, <1% THD+N). While the CEA 2006 S/N is 85 dB (measured at 1 watt), the S/N at rated power is 98 dB.

Kicker Livin' Loud Certified Power Certificate: The amplifier comes with a certificate indicating the total RMS power output of the particular amplifier, along with the model number, serial number, tested date, and whether the amplifier passed the total harmonic distortion, signal-to-noise ratio, and protection circuit tests.

Crossover: The front and rear amplifier channels have independent crossover settings. The internal crossovers can be set for low-pass, high-pass, or full-range operation. The variable low-pass and/or high-pass crossover points can be set between 50 and 200 Hz; the crossover slope is 12 dB per octave.

KICKEQ Bass Boost: The front and rear amplifier channels have independent bass boost settings. The bass boost circuits provide a variable (0-18 dB) signal boost at 40 Hz.

Fader: When powering four speakers and using both the front and rear inputs, turn the fader switch On to maintain front/rear fader control.

Auto Turn-On: The Auto Turn-On switch offers three options:

  • +12 V: The amp turns on when +12 volts is applied to the remote terminal.
  • DC Offset: The amp turns on when a 6 volt signal is detected on the RCA inputs (from a speaker-level source); in this mode the amp's remote terminal acts as a +12 volt output to turn on another component.
  • Audio: The amp turns on when an incoming audio signal is detected; in this mode the amp's remote terminal acts as a +12 volt output to turn on another component.

Fail-Safe Integration Technology (FIT): To accommodate the varying range of signal levels coming from today's factory and aftermarket radios, the IX500.4 utilizes Fail-Safe Integration Technology (FIT), offering significant noise reduction and compatibility with virtually any factory radio. There is a switchable input level control; when set to Low level, the amp can accommodate an input signal of 125mV-5V, at High level, the amp will accept 250mV-10V signals.

Gain Control: The front and rear sections of the amp have independent input gain controls. With the Input Level Control switch at the appropriate setting, you can set the rotary Gain Control to match the output of the source unit. The Gain Controls are adjusted with a flat-head screwdriver, and can be set between 0 and 11.

Protection Circuitry: The IX500.4 has protection circuitry that will turn the amp off in the event of overheating, over voltage (power input), under voltage (power input), short circuit (speaker output), and over current (speaker output). If the Protection LED on the front side of the amp illuminates red, the protection circuit has engaged and the amp will not play until the problem is resolved.

Stackable: The optional Kicker IXSM stacking mount (item number 206IXSM, sold separately) allows you to stack two Kicker IX-series amplifiers on top of one another.

Connections

Power Connections: The power and ground connections are set-screw terminals that will accommodate up to 4-gauge wire. The remote turn-on set-screw terminal will accept up to 8-gauge wire. The included 3mm Allen wrench is required to tighten/loosen the terminals.

Note: Kicker recommends the power and ground cables be 4 gauge minimum and an external 50 amp fuse is required to protect the amp. The recommended accessory list for the IX500.4 includes wiring kits with 4 gauge wire and 100 or 150 amp fuses; that original fuse should be replaced with a 50-amp fuse.

Speaker Outputs: The IX500.4 is equipped with four pair of set-screw speaker terminals that will accommodate up to 8-gauge wire. The supplied 3mm Allen wrench is required to tighten/loosen the terminals.

RCA Input Connectors: The amplifier is equipped with two pair of RCA inputs, which can be used for line level or speaker level input signals. If the source device doesn't have preamp level outputs, the KISL speaker wire to RCA adapter (item number 206KISL, sold separately) is needed and the Input Level switch should be set to High.

Line Level Output: The amplifier has a pair of RCA line level outputs for feeding a signal to another amplifier. It is the same signal that is input through the line inputs. The amplifier's crossovers have no effect on the line level output signal, however, if the input signal is crossed over at the source unit, the filtered signal will be passed on to the second amplifier. The line output is available when using either line level or speaker level inputs.

Our Product Research Team

At Crutchfield, you'll get detailed, accurate information that's hard to find elsewhere. That's because we have our own in-house Product Research team — they open the box, verify contents, check the owner's manual, and record dimensions, features and specs. We stay on top of new products and technologies to help people make informed choices.

Kicker 11IX500.4 Reviews

Average Customer Review:

3 reviews
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Great Amp

Written By drhamilt, pensacola on Sunday, March 30, 2014

Crutchfield Customer Review (What's this?)

I really like this amp , seeing that i dont know much about installing or amps in general this amp is easy to install and the controls are not too complex. I did the entire install from running the power cable to speaker wire and tuning the amp it was clearly laid out and crutchfield was a big help

Pros: great sound very clear

Cons: had to do some research on tuning but was very easy once i knew how

Clear, Clean Sound

Written By Paul D, San Antonio, TX on Friday, August 09, 2013

Crutchfield Customer Review (What's this?)

This Kicker Amp is doing exactly what I was looking for. I'm not trying to 'break any windows' but wanted plenty of volume while maintaining clear, distinct imagery. Infinity Kappa 6" in the doors and 6X9 Kenwood Excelon on the rear deck and had to run the front/rears off of one channel and use the other for a sub. Using the many crossover/filters and gain controls I was able to really tailor the sound to the speakers and their locations. Looks, works and sounds great.

Pros: Lots of controls to tailor the sound stage.

awesome amp!!!

Written By edogg, ruston, la on Sunday, April 21, 2013

Super powerful, super clear, super compact, super efficient! Have rs65.2's in the front doors and CVT 6 1/2" in the rears and the highs and mids are simply perfect! Love this amp!

Get everything you’ll need to enjoy your new Kicker 11IX500.4

You'll need an amp wiring kit to install your new amplifier, as wiring is not included.
Bring the music from your amp to your speakers.
Patch cables take the music from your stereo to the amplifier. Most amp wiring kits don't include them.
The right tools will make the installation easier.
Helps protect your car's charging system and improves power handling. Required power and ground wires not included with cap.
For multi-amp systems, you'll need a separate fuse holder.
Kicker PK4

Kicker PK4

4-gauge amplifier power wiring kit

Item #: 206PK4

$129.99
Add to Cart
Rockford Fosgate RFK4X

Rockford Fosgate RFK4X

Complete 4-gauge amplifier wiring kit
Includes patch cable and speaker wire

Item #: 575RFK4X

(12)

$159.99
Add to Cart
T-Spec 4PK Installation Kit

T-Spec 4PK Installation Kit

4-gauge amplifier wiring kit — includes speaker wire

Item #: 1204PK

(3)

$89.99
Add to Cart
EFX PA4BX Wiring Kit

EFX PA4BX Wiring Kit

4-gauge amplifier wiring kit — includes 2-channel patch cable

Item #: 142PA4BX

(5)

$79.99
Add to Cart
Rockford Fosgate RFK4

Rockford Fosgate RFK4

4-gauge amplifier power wiring kit

Item #: 575RFK4

(10)

$114.99
Add to Cart
T-Spec 12-gauge Speaker Wire

T-Spec 12-gauge Speaker Wire

Black/white jacket — priced per foot

Item #: 120SW12WB1

(30)

T-Spec 16-gauge Speaker Wire

T-Spec 16-gauge Speaker Wire

Black/white jacket — priced per foot

Item #: 120SW16WB1

(13)

Stinger PRO Series Speaker Wire

Stinger PRO Series Speaker Wire

Priced per foot (16 Gauge)

Item #: 541SPW516B

(51)

T-Spec 4-Channel RCA Patch Cable

T-Spec 4-Channel RCA Patch Cable

17-foot length

Item #: 120RCA174

(8)

$29.99
Add to Cart
Kicker KISL

Kicker KISL

2-channel speaker wire adapter (bare-wire connector to RCAs)

Item #: 206KISL

(14)

$12.99
Add to Cart
T-Spec 2-Channel RCA Patch Cables

T-Spec 2-Channel RCA Patch Cables

Available in 7 different lengths (17-foot)

Item #: 120RCA172

(27)

$19.99
Add to Cart
JL Audio XD-CLRAIC2-SW

JL Audio XD-CLRAIC2-SW

2-channel speaker output converter (bare speaker wires to male RCAs)

Item #: 136XDCLR2S

(12)

EFX 17-foot RCA Patch Cable

EFX 17-foot RCA Patch Cable

Item #: 142A17C

(55)

$7.99
After $2.00 Savings Add to Cart
Kicker IXSM

Kicker IXSM

Stacking kit for IX Series amplifiers

Item #: 206IXSM

$49.99
Add to Cart
S&G Wire Cutter/Stripper Tool

S&G Wire Cutter/Stripper Tool

Cuts and strips 12- to 22-gauge wire

Item #: 18119100

(15)

$19.99
Add to Cart
Pro.Fit Wire Worm

Pro.Fit Wire Worm

Installation tool helps route wiring through tight spaces

Item #: 042DM4533

(33)

$12.99
Add to Cart
Bojo Trim Panel Tools

Bojo Trim Panel Tools

Set of 6 pry tools — helps remove interior and exterior trim and door panels

Item #: 126CR6NGL

(52)

$24.99
Add to Cart
S&G Tool Aid 87650

S&G Tool Aid 87650

Door Trim and Panel Removal Tool

Item #: 18187650

(69)

Pro.Fit Trim Panel Tool

Pro.Fit Trim Panel Tool

Remove your vehicle's trim panels without damage

Item #: 042DM4022

(87)

Skewdriver Pro SPK4042

Skewdriver Pro SPK4042

Ratcheting straight and offset screwdriver set with 40 bits (Skewdriver Pro with ratchet handle, pictured)

Item #: 180SPK4042

(8)

$49.99
Add to Cart
Spec Tools SQR-200a Squeeze Wrench

Spec Tools SQR-200a Squeeze Wrench

Narrow space ratchet kit with 18 sockets

Item #: 180SQR200A

(1)

$49.99
Add to Cart
Bojo Trim Panel Tools

Bojo Trim Panel Tools

Set of 6 pry tools — helps remove interior and exterior trim and door panels

Item #: 126CR6LNGL

(2)

$29.99
Add to Cart
DEI Heat Shrink Tubing

DEI Heat Shrink Tubing

Black 4-foot length (Assortment)

Item #: 696010839

(7)

$24.99
Add to Cart
T-Spec Capacitor

T-Spec Capacitor

3.0-Farad capacitor with red LCD meter

Item #: 1203DDC

(8)

$99.99
Add to Cart
T-Spec Capacitor

T-Spec Capacitor

1.5-farad capacitor with red LCD meter

Item #: 12015DDC

(11)

$79.99
Add to Cart
Rockford Fosgate RFFAGU Fuse Holder

Rockford Fosgate RFFAGU Fuse Holder

Platinum-plated AGU fuse holder
Fits 4- or 8-gauge cable

Item #: 575RFFAGU

(25)

$10.99
Add to Cart
Autosound 2000 Disc One

Autosound 2000 Disc One

Low Frequency Test CD (Disc One)

Item #: 503CD101

(1)

$19.99
Add to Cart
Autosound 2000 Disc Five

Autosound 2000 Disc Five

System Demonstration — Test CD

Item #: 503CD105