Kicker 12CX300.4

4-channel car amplifier — 40 watts RMS x 4

Item #: 2062CX3004

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2 Reviews | 2 questions - 2 answers

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Power for your speakers

Kicker's CX300.4 4-channel amplifier delivers 40 watts RMS to each of your front and rear speakers, or you can drive a couple of subs with up to 150 watts RMS each in 2-channel mode. And they don't cut any corners building this amp, using oversized transistors, special transformers, and a heavy-duty heat sink to bring you reliable power that won't fade when you push your system hard. Built-in high- and low-pass filters help you sculpt the sound to get the most out of your system, while variable bass boosts allow you to add some low-end punch to your front and rear channels separately.

Vertical mounting

Kicker includes hardware for vertical mounting.

Hooks in almost anywhere in almost any position

Kicker uses their Fail-Safe Integration Technology (FIT™) to keep this amp's input free from noise or interference, so you'll get a clean signal from almost any system, even a factory radio. Rugged metal end panels provide even more shielding from radiated interference. The CX300.4 also comes with hardware that lets you you mount it vertically, so you can put it in a location that takes up very little floor space and looks ultra-cool.

Product Highlights:

  • 4-channel car amplifier
  • 40 watts RMS x 4 at 4 ohms (75 watts RMS x 4 at 2 ohms)
  • 150 watts RMS x 2 at 4 ohms (4-ohm stable in bridged mode)
  • CEA-2006 compliant
  • Class AB amp technology
  • separate variable high- and low-pass filters (50-200 Hz, 12 dB/octave) for front and rear channels
  • separate variable bass boosts (0-12 dB at 40 Hz) for front and rear channels
  • frequency response: 10-20K Hz
  • preamp and speaker-level inputs (optional wire adapter required for speaker-level inputs)
  • balanced differential inputs and Fail-Safe Integration Technology eliminate noise from your vehicle's electrical system
  • 8-gauge power and ground leads and a 60-amp fuse recommended — wiring and hardware not included with amplifier
  • no onboard fuses — when installing multiple amps in a system, an additional 60-amp in-line fuse between the distribution block and the amplifier is recommended
  • includes hardware for vertical mounting
  • 13-1/4"W x 2-3/8"H x 7-1/8"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
  • 2 Vertical mounting brackets
  • Four 3/4" Self-tapping screws
  • Owner's manual (English/ Spanish/ German/ French)
  • Power certification sheet

Product Research

Features
Controls
Connections

Features

CEA 2006 Compliant: The Kicker CX300.4's power ratings are measured under conditions approved by the Consumer Electronics Association (CEA). These standards allow you to accurately compare the rated power output of all CEA 2006-compliant amplifiers, even from different brands. Manufacturers who adhere to the standards can display the CEA 2006 logo on their products and packaging.

Kicker Livin' Loud Certified Power: The amplifier comes with a certificate that indicates the total maximum wattage of the particular amplifier, along with the model number, serial number, and whether the amplifier passed the total harmonic distortion, signal-to-noise ratio, and protection circuit tests.

Auto Turn-on: The amp offers two automatic turn-on modes:

  • +12V: connect a wire from the remote turn-on lead from your source unit to the REM terminal on the amplifier; this is the preferred turn-on method
  • DC Offset: turns the amp on when a 6-volt DC offset is detected at the high-level speaker inputs when the source unit is turned on

Vertical Mounting: The amp can be mounted vertically using the included brackets. The vertical dimensions are approximately:

  • Width: 13-1/4"
  • Height: 7-1/4"
  • Depth: 2-3/8"

Signal to Noise Ratio: The S/N under CEA-2006 compliant conditions (1 watt output) is 75 dBA. The S/N at rated power is 95 dB.

Controls

Input Level Switch: Set the input level switch to Lo when using preamp level input signals and Hi when using speaker level input signals.

Fader: When your source unit has discrete front and rear outputs, set the fader switch to on. Turn the fader switch off to send a single stereo input to both the front and rear amps.

Gain: The front and rear sections of the amplifier (Amp1 and Amp2) have independent rotary gain controls, continuously variable from 125 mV to 5 V when the Input Level switch is set to Low and 250 mV to 10 V when the Input Level switch is set to High.

Crossover: The front and rear sections of the amplifier also have independent crossover circuits:

  • Mode: three position switch; Off (crossover bypassed), Hi (high-pass), an Lo (low-pass)
  • Frequency: continuously variable from 50 to 200 Hz; the slope is 12 dB per octave

Bass Boost: The bass boost circuit is continuously variable from 0 to +12 dB and centered at 40 Hz. The front and rear amps have separate bass boost controls.

Connections

Left Side of Amplifier:

  • +12V (power): terminal strip; accepts spade connectors up to 0.5" wide
  • REM (remote turn-on): terminal strip; accepts spade connectors up to 0.325" wide
  • GND (ground): terminal strip; accepts spade connectors up to 0.5" wide
  • Speaker Outputs: terminal strip with four pair of outputs; accepts spade connectors up to 0.325" wide
Note: The Amplifier is not equipped with an internal fuse. An external 60-amp fuse (not included) must be installed on the power wire. If the system has only this amp and a wiring kit is used that includes a fuse with a value other than 60-amps, the original should be replaced with a 60-amp fuse.

Right Side of Amplifier:

  • RCA Inputs: two pair of stereo RCA inputs (Amp1 and Amp2); also used for speaker level input (up to two of item number 206KiSL needed, sold separately)

Amp Wiring Kit: Kicker recommends using an 8-gauge wiring kit with this amplifier.

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 12CX300.4 Reviews

Average Customer Review:

2 reviews
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great sound

Written By south texas tuning, corpus christi, tx on Monday, August 12, 2013

Crutchfield Customer Review (What's this?)

Easy installation great product

Cons: Big

Kicker amp

Written By Dennis, Holtsville ny on Sunday, July 14, 2013

Crutchfield Customer Review (What's this?)

I had this kicker amp installed in my 71 Camaro and it sounds great. With dual exhausts it hard to hear the radio but with this amp it really makes the speakers roar.

Pros: Easy to install

Cons: None

Get everything you’ll need to enjoy your new Kicker 12CX300.4

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.
Helps protect your car's charging system and improves power handling. Required power and ground wires not included with cap.
The right tools will make the installation easier.
Have your new amplifier put in by a qualified professional in your area.
Kicker CK8

Kicker CK8

Complete 8-gauge amplifier wiring kit — includes 2-channel patch cable and speaker wire

Item #: 206CK8

$99.99
Add to Cart
Kicker PK8

Kicker PK8

8-gauge amplifier power wiring kit

Item #: 206PK8

(1)

$79.99
Add to Cart
T-Spec 8PK Installation Kit

T-Spec 8PK Installation Kit

8-gauge amplifier wiring kit — includes speaker wire

Item #: 1208PK

(6)

$59.99
Add to Cart
EFX PA8BX Wiring Kit

EFX PA8BX Wiring Kit

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

Item #: 142PA8BX

(8)

$49.99
Add to Cart
T-Spec 8RAK Installation Kit

T-Spec 8RAK Installation Kit

8-gauge amplifier wiring kit — includes 2-channel patch cable and speaker wire

Item #: 1208RAK

(3)

$69.99
Add to Cart
Rockford Fosgate RFK8i

Rockford Fosgate RFK8i

8-gauge amplifier power and signal wiring kit

Item #: 575RFK8I

(30)

$74.99
Add to Cart
Rockford Fosgate RFK8

Rockford Fosgate RFK8

8-gauge amplifier power wiring kit

Item #: 575RFK8

(6)

$64.99
Add to Cart
T-Spec V10-RAK8

T-Spec V10-RAK8

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

Item #: 120V10RAK8

$69.99
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

(52)

Kicker KISL

Kicker KISL

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

Item #: 206KISL

(15)

$12.99
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)

T-Spec 2-Channel RCA Patch Cables

T-Spec 2-Channel RCA Patch Cables

Available in 7 different lengths (20-foot)

Item #: 120RCA202

(27)

$20.99
Add to Cart
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
EFX 17-foot RCA Patch Cable

EFX 17-foot RCA Patch Cable

Item #: 142A17C

(55)

$7.99
After $2.00 Savings Add to Cart
EFX 2-Channel RCA Patch Cables

EFX 2-Channel RCA Patch Cables

Reference Series Multi-Core RCA patch cables — available in 5 different lengths (12-foot)

Item #: 142RR12

$19.95
Add to Cart
EFX 2-Channel RCA Patch Cables

EFX 2-Channel RCA Patch Cables

Core Series Twisted RCA patch cables — available in 5 different lengths (12-foot)

Item #: 142RCT12B

$9.95
Add to Cart
EFX 2-Channel RCA Patch Cables

EFX 2-Channel RCA Patch Cables

Elite Series Braided Multi-Core RCA patch cables — available in 5 different lengths (25-foot)

Item #: 142RE25

$99.95
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
S&G Wire Cutter/Stripper Tool

S&G Wire Cutter/Stripper Tool

Cuts and strips 12- to 22-gauge wire

Item #: 18119100

(17)

$19.99
Add to Cart
Pro.Fit Wire Worm

Pro.Fit Wire Worm

Installation tool helps route wiring through tight spaces

Item #: 042DM4533

(34)

$12.99
Add to Cart
Metra Crimp Tool and Connectors

Metra Crimp Tool and Connectors

Package contains crimp tool and over 150 pieces

Item #: 120CRIMPKT

(15)

$19.99
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

(54)

$24.99
Add to Cart
S&G Tool Aid 87650

S&G Tool Aid 87650

Door Trim and Panel Removal Tool

Item #: 18187650

(71)

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
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
Install Bay IB35400

Install Bay IB35400

Premium door panel and trim tool

Item #: 12035400

$15.99
Add to Cart
Install Bay 3320

Install Bay 3320

Auto-ranging digital multimeter

Item #: 1203320

$39.99
Add to Cart
DEI Heat Shrink Tubing

DEI Heat Shrink Tubing

Black 4-foot length (Assortment)

Item #: 696010839

(8)

$24.99
Add to Cart
InstallCard: Amp or Equalizer

InstallCard: Amp or Equalizer

Prepaid professional amplifier or EQ installation

Item #: 597421003

(18)

$79.99
Add to Cart
Autosound 2000 Disc Two

Autosound 2000 Disc Two

Image/Placement Test CD

Item #: 503CD102

$19.99
Add to Cart
Autosound 2000 Disc Five

Autosound 2000 Disc Five

System Demonstration — Test CD

Item #: 503CD105

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 Three

Autosound 2000 Disc Three

System/Environmental Test CD

Item #: 503CD103

$19.99
Add to Cart

Questions & Answers Ask the community. Share your knowledge.

2 questions already asked

Thanks for your question. For information on selecting the best amp I would recommend reaching out to an Advisor by phone (1-800-324-9695) or online chat. They will be able to help determine the differences between the amp models and help you make the best choice for your system. [ Krissy  Jun 05, 2014 ]  Staff
Thanks for your question. For information on selecting the best amp I would recommend reaching out to an Advisor by phone (1-800-324-9695) or online chat. They will be able to help determine the differences between the amp models and help you make the best choice for your system. [ Krissy  Jun 05, 2014 ]  Staff