Expert Service 1-877-289-7664 [Hours]

2nd Annual Warehouse Sale- more products added!

Kicker ZX650.4 (11ZX650.4)

650W 4-Channel ZX Series Car Amplifier

Discontinued
|

We apologize

This item has been discontinued

Get FAST answers from customers ASK a Question See questions answers

Why Choose Kicker Amplifiers:

Kicker Always Exceeds Rated Power

Kicker Performance Audio has been around since 1980 and has been producing amazing products since then. Kicker’s drive to consistently produce products that not only are great but also push the standards of the car audio industry is very apparent in all series of their amplifiers. All Kicker amplifiers are CEA-2006 Compliant, assuring you are receiving a continuous certified RMS power rating. Kicker will always exceed the rated power because Kicker is notorious for under rating their amplifiers. So really you will be getting more power than you actually pay for, which is not true for other lower end amplifiers that generally over rate their amplifiers. Kicker amplifiers will provide a choice of three automatic turn-on modes; remote, DC offset, or signal sense, which make them compatible with any car audio system. Along with their high-density convection heat sink for extreme heat dissipation and high efficiency MOSFET power supply, Kickers amplifiers are great way to go when selecting the perfect amplifier for your car audio system.

Kicker FIT Fail Safe Integration Technology

Kicker Fail Safe Technology (FIT):

Kicker has manufactured a new Fail-Safe Integration (FIT) technology into all of their amplifiers. The FIT technology uses isolated differential inputs in order to reject noise or electrical interferences, caused by engines, alternators or any other audio or video component throughout your vehicle. The differential inputs will use a muting circuit that will block out any additional noise that may stream down the line. The FIT technology will help created the cleanest and purest sound possible for any audio system. The Kicker FIT technology is setting the standard for high quality sound.

General Features

  • ZX Series 4-Channel Class AB Car Amplifier
  • RMS Power Rating (@ 14.4V):
    • 4 ohms: 120 watts x 4 chan.
    • 2 ohms: 160 watts x 4 chan.
    • Bridged, 4 ohms: 320 watts x 2 chan.
  • MOSFET power supply
  • Wired remote bass level control optional (Kicker 10ZXRC)
  • LED power and protection indicators
  • Tuned Bass EQ (0-18 dB bass boost at 40 Hz)
  • FIT (Fail-Safe Integration Technology) utilizes differential inputs to reject noise and electrical interference for the quietest operation possible and ultimate audio clarity
  • Balanced differential inputs make KICKER ZX Amplifiers compatible with any factory radios
  • Eliminates unwanted noise in a system
  • Boost, gain, and crossover frequencies are top-mounted for easy access, and a handy protection indicator featuring a new flashing yellow low-voltage light enhances the end panel
  • Bridgeable operation
  • Speaker-level inputs compatible (switchable) through RCA connection, Kicker 09ZISL required and sold separately
  • Automatic turn on modes: remote, DC offset, or signal sense
  • Thermal, voltage, and short circuit protection circuitry
  • Variable high-pass filter (50-200 Hz, 12 dB/octave)
  • Variable low-pass filter (50-200 Hz, 12 dB/octave)
  • Frequency response: 20-20000 Hz
  • New front panel allows customization with decals
  • CEA-2006 compliant amplifier
  • Dimensions: 20"L x 9-5/8"W x 2-1/8"H
  • 4-gauge power and ground leads recommended. Contact us for information regarding a discount on a select amplifier kit when purchased together.
  • Authorized Internet Dealer
  • 2-year Manufacturer's warranty

Extend your Kicker warranty to 3 Years when you install your new Kicker amplifier with a compatible Kicker power kit! For a limited time, you can register your Kicker amplifier and power kit to qualify for an additional year of coverage. This offer is only available through official Kicker dealers and will only last for a limited time. With this amplifier, the following power kits will qualify for the extended warranty program: Kicker CK44, and Kicker 09ZCK44.

2011 Kicker Authorized Online Dealer and eBay Seller

Product History:

Kicker 11ZX6504 thumbnail
(newest, current model)
Alpine CDA-7998 thumbnail
(previous model, replaced by Kicker ZX650.4 (11ZX650.4))

Power Specifications - Full Range Channels

RMS Power @ 4 ohms

The RMS power rating is the measure of continuous power that an amplifier can output, or a speaker can handle. It is the most accurate depiction of real, continuous power that the industry has so far.

If the final impedance of your speakers or subwoofers equals 4 ohms, this is how much power this amplifier will supply at that ohm level. The higher the RMS wattage, the more clean and loud your music will sound.

120 watts x 4 channels
RMS Power @ 2 ohms

The RMS power rating is the measure of continuous power that an amplifier can output, or a speaker can handle. It is the most accurate depiction of real, continuous power that the industry has so far.

If the final impedance of your speakers or subwoofers equals 2 ohms, this is how much power this amplifier will supply at that ohm level. The higher the RMS wattage, the more clean and loud your music will sound.

160 watts x 4 channels
Bridged RMS Power

Bridging refers to combining two channels on an amplifier to create one channel with double the voltage and an increased power output. A 2-channel amplifier will bridge down to 1-channel and a 4-channel amplifier can bridge to create 2-channels. An amplifier is most commonly bridged to drive a subwoofer.

Remember, once you bridge two channels down to one its final impedance will be 4 ohms unless otherwise specified. This rating lists the RMS power created once an amplifier is bridged.

320 watts x 2 channels

Amplifier Specifications

Amplifier Series
This designates the series of the amplifier. Many amps are available in a litany of different wattage and channel configurations, but maintain consistent features throughout the product line.
Amplifier Class

An amplifier increases the power of the signal being fed to it by taking energy from its power supply and matching the signal but increasing its amplitude. Amplifiers use many different methods for converting these electrical signals and have been categorized into classes.

Class A/B: Greater than 50% of the input signal is amplified while the other percentage is “off”. These amplifiers have a small amount of current flowing through the output transistors all the time which almost eliminates crossover distortion. Class A/B has great sound quality but is not as efficient as class D. These amps are most commonly used to drive speakers.

Class D: Also known as switching amplifiers, class D amps have output transistors that are completely turned “on” or “off”. This means that when the transistors are on, there is almost no voltage across them but when they are off there is significant voltage but no current flowing through it which makes these amplifiers very efficient at the cost of sound quality. These amps are most commonly used to drive subwoofers.

Other Classes: You may see classes such as GH, bD, X, FD, etc. by some manufactures. These amplifiers tend to be either class A/B, D or a hybrid of the two but with improvements to their designs that can make them more efficient or offer better sound quality.

AB
Number of Channels
Each channel on an amplifier will power one speaker using a positive and negative cable. There are various types of amplifiers, each designed to power a certain number of speakers. Monoblock amplifiers, also known as single channel, are designed to power one or more subwoofers. These amplifiers often have very high power ratings. On the other hand, multi-channel amplifiers power multiple speakers, usually at lower power ratings. 2-Channel and 4-Channel amplifiers can power car speakers or low powered subwoofers. Occasionally you might see a 5 or 6-channel amplifier that can power speakers and subwoofers at the same time. The most common setup is a monoblock amp to run subwoofers and a 4-channel amp to run door speakers. Check out our Knowledge Base for more information.
4
Total RMS Power Output
Total RMS power is measured by multiplying RMS power per channel by the number of channels, and is calculated at the lowest level of operating impedance.

RMS power is the amount of continuous power, measured in watts, that an amplifier produces is called RMS power. The higher the RMS figure, the louder and cleaner your music sounds.

The RMS output figure is much more accurate than the peak rating when comparing products.

650 watts
Maximum Input Gauge Size
This is the largest gauge wire that will fit into the power and ground terminals of this device. The lower the gauge number, the thicker the wire is. For example, a 4 gauge wire is thicker than an 8 gauge wire and thus has higher current carrying capacity. Always do your best to get this size wire to reduce the risk of damage to your components.
4 AWG
Minimum Impedance Unbridged
The lowest impedance the amplifier will handle when it is not bridged.
2 ohms
Minimum Impedance Bridged
The lowest impedance the amplifier will handle when it is bridged.
4 ohms
THD at Rated RMS Power
The amount of change in harmonic content of the signal as it is amplified. A lower figure indicates less change and a more accurate amp. THD below 0.10% is inaudible.
<1%
Speaker Level Inputs
Speaker level inputs are commonly referred to as high-level inputs and vice versa. This input type allows you to get your audio signal directly from the speaker wire in your vehicle, instead of using RCA cables. The advantage of this is factory integration, as most stock radios do not have RCA outputs to run amplifiers.
Yes
Preamp Outputs
Many amplifiers are equipped with RCA preamp outputs which pass the original music signal from the source to additional amplifiers. This is known as daisy chaining because the source connects to the first amp, and the first amp connects to the second amp, etc. The advantage to daisy chaining is you only need one 2-channel RCA cable to transfer the signal from the head-unit to the amplifier, and then one additional cable for each amp being daisy chained.
No
Built-in Crossover

A crossover is a type of filtering system that permits only certain frequencies to play. A Low-Pass (LP) crossover allows only frequencies below its setting to get through which is good in the case of some subwoofers. A High-Pass(HP) filter allows frequencies above its setting to pass through, this is normally used on speakers.

When a crossover is set to FULL it means no filtering is added and the full frequency spectrum is allowed through the amplifier. Filtering is important because feeding a speaker frequencies it cannot reproduce effectively creates distortion.

Low-pass (LP)
High-pass (HP)
Full (AP)
High-Pass Crossover Frequency
The high-pass crossover frequency can be a fixed crossover point or a variable crossover range. A variable high-pass crossover allows you to select a specific crossover point which allows frequencies above the set crossover point to pass, while making frequencies below the set point gently or harshly roll-off, depending on the steepness of the slope.

The steepness of the roll-off slope is measured in dB/octave and refers to the rate of attenuation (lowering of volume) outside their pass bands.

50 - 200 Hz
Low-Pass Crossover Frequency
The low-pass crossover frequency is typically used for subwoofers. It can be a fixed crossover point or a variable crossover range. A variable low-pass crossover allows you to select a specific crossover point which allows frequencies below the set crossover point to pass, while making frequencies above the set point gently or harshly roll-off, depending on the steepness of the slope.

The steepness of the roll-off slope is measured in dB/octave and refers to the rate of attenuation (lowering of volume) outside their pass bands.

50 - 200 Hz
Signal-to-Noise Ratio
This spec compares the strength of the signal to the level of background noise. A higher value indicates less background noise.
95 dB
Bass Boost
The objective of the bass boost is to get more kick out of your subwoofer. It is a circuit that emphasizes the lower frequencies at a given point. The bass boost should always be set first before setting the gain. This feature is known for destroying subwoofers and is commonly used incorrectly, so be cautious.
0 - 18 dB
Bass/Gain Remote
If the amp comes with a bass/gain remote you will be able to control the level of your bass from your dashboard. Typically bass remotes also include a 16-20 ft. wire for installation.
Optional (Accessory required and sold separately)
Fan Cooled
A great feature to have if an amp generates a large amount of heat. Cooling fans can help regulate the temperature to prevent the amp from overheating (burning).
No
Fuse Rating
The amperage and the number of fuse(s) an amp requires.
80A x 1 
CEA-2006 Compliant
Amplifiers that have been tested to meet specific standards. When a car amplifier meets these standards, you can be sure that it will be able to produce the amount of power specified by the official CEA-2006 rating. Usually, these rating consist of the following items:
  • RMS Power
  • Signal-to-Noise Ratio

This rating applies to both external car amplifiers, as well as the amplifiers inside of in-dash stereos.

Yes
Strappable
Some amplifiers can be "strapped" together in order to increase the output of a single audio channel. These amplifiers feature RCA preamp outputs, allowing you to pass the signal directly from one amp to the other to ensure consistency.

Specials with this Item

Promotions
Promotions we have offer More Ways to Shop for items that are on clearance, last chance, special offer and sales, Made in America, and more!

Warranty and Return Policy

Parts Warranty Duration
2 years
Labor Warranty Duration
2 years
Warranty Provider
Manufacturer

Summary of Customer Ratings & Reviews

Rating Distribution

5 Star
100%
4 Star
0%
3 Star
0%
2 Star
0%
1 Star
0%

Average Attribution Rating

Durability
4.9
Value
5.0
Features
5.0
Design
4.9
Usability
5.0

Liclemack

Antigua And Barbuda

Overall
Durability
Value
Features
Design
Usability

Excellent Product

July 3, 2011

I just received my 2 amplifiers, these are just the best amps I've ever owned. Pure power, clarity and quality. I'm using 1 to play 2 10inch Selenium mid-range speakers and 4 selenium mid-range horns. The other is being used to play one 12inch mid bass Selenium speaker and two pairs of Kicker KS20 tweeters and 2 Selenium pro tweeters. The music is just amazing. Only Kicker could make these gods of music. :-)

2 of 2 found this helpful

Help our customers find the most helpful reviews

Samuel

Tampa, FL

Overall
Durability
Value
Features
Design
Usability

Great AMP

June 4, 2013

Great sounding powerful amp. I have it running two sets of Polk MOMO components up front and Polk coaxials in the rear and this amp handles them without a sweat, loud and clear. Definitely buy this amp

0 of 0 found this helpful

Help our customers find the most helpful reviews

Doolie77

West Palm Beach, FL

Overall
Durability
Value
Features
Design
Usability

Very Pleased!

July 18, 2012

I have had this amp in my 2009 Accord Coupe w/ NAV for 6 months connected to the stock head unit and hooked up to 2 Cerwin-Vega CVMP6.5 on the rear deck for mid bass and to Polk Audio MM6501 up front for bass and treble with a separate amp for my 8" Sub. There is more power than I can use and the sound is unbelievable! It required some tuning of the crossovers to my speakers, but it was easy to do and makes a great deal of difference. Be sure to order a quality wiring kit and I also used mass loaded vinyl and adhesive backed sound dampening for the doors and dampening for the flat metal areas to reduce vibrations throughout the vehicle. I had ordered another amp first but it wasn't compatible with my head unit. After working with their tech support, I was able to replace it with this. Sonic Electronix was great during every aspect! I'll definitely purchase from Sonic Electronix again! I only gave a 4 for durability because I have only had it 6 months, but so far so good.

0 of 0 found this helpful

Help our customers find the most helpful reviews

ABDUL

Virgin Islands (British)

Overall
Durability
Value
Features
Design
Usability

MUST GET

May 8, 2012

I bought this amp because of the name, it's pushing four 5X7 infinity kappa speakers in my 2010 ford explorer sport trac, let me say the clarity it plays at high volume is really sweet, if you are looking for clarity at loud volume this is the amp for you, i almost forgot to mention the amp runs a little hot but this is how it's design over all i love it and recommends it.

0 of 0 found this helpful

Help our customers find the most helpful reviews

BKRHINO

Bllomingdale, IL

Overall
Durability
Value
Features
Design
Usability

Nice Upgrade

March 19, 2012

This is the amp you want if you want clean power. I had an Eclipse four channel that had a channel go out. The new ZX 650.4 has taken my speakers to a new level. I have Diamond components in the front with MB Quartz in the doors of my 2004 Navigator. I had a custom built double 12 sub box firing down with Diamonds D3's in the rear hatch. Alpine head unit and the system is loud, but VERY CLEAR. The amp is a vital part of your system and you will not be disappointed.

0 of 0 found this helpful

Help our customers find the most helpful reviews

Ben

Atlanta, GA

Overall
Durability
Value
Features
Design
Usability

Crystal clear mids/highs!

February 11, 2012

I bought this amp to power my four Infinity KAPPA 6x8 coaxial speakers in my 2011 Ford Focus. It sounds awesome and gets super loud! If you want super clear quality and super loud while not distorting, then get this amp! My gains on mine aren't even half way and it sounds so good. The birthsheet for mine said 685W! That's outstanding and says something about it. Don't hesitate and get it if you are thinking about it! Sonic with the hookup on them as well!

0 of 0 found this helpful

Help our customers find the most helpful reviews

ABDUL

Virgin Islands (British)

Overall
Durability
Value
Features
Design
Usability

Mad Amplifier

November 17, 2011

I bought this amp from Sonic Electronix, I have it pushing four 5x8 infinity kappa speakers in my new 2010 ford explorer sport trac, the birth certificate that comes with the amp says maximum RMS is 676 let me say none of my friends want any part of me when it comes to loud and clean music, the thing is the volume on the amp is half this amp is TRULY MAD. You will not be disappointed, MAD Awesome amp.

0 of 0 found this helpful

Help our customers find the most helpful reviews

Matthew

Richmond, VA

Overall
Durability
Value
Features
Design
Usability

Best...

August 26, 2011

Best highs/mids amp i've ever owned. Nice clean looking 4 channel amp.. pick it up.

0 of 0 found this helpful

Help our customers find the most helpful reviews

Alex

Missouri

Overall
Durability
Value
Features
Design
Usability

Very nice amp.

July 28, 2011

I have the 2011 650.4 and it is a nice, clean four channel amp. The birthsheet that came with mine said 685watts. So I'm actually pushing my speakers with a little more than 120 at 4ohm. It's a very powerful amp though so make sure you have speakers than can handle the raw continuous power. The THD rating is below 1% and the signal to noise ratio is high making this amp not only powerful but stable and clean sounding. Kicker has done good for the 2011 series of amps. The past couple years they have released some crappy amps, but they've re-designed everything about them and they are awesome.

0 of 0 found this helpful

Help our customers find the most helpful reviews

Accessory Tools and Products

Accessories added

NVX XKIT44 4-Gauge 4-Channel Wiring Kit

4-Channel 100% OFC Complete True 4 Gauge Amp Kit with RCA Cables and Speaker Wire

Your Price $99.99

Kicker PK4 4-Gauge Wiring Kit

Get a Kicker wiring kit to match your new Kicker amplifier! Don't forget the RCA's!

Your Price $89.95

NVX XBG3PK 1/0 Gauge OFC Big 3 Upgrade Kit

Comes with everything you need to upgrade your power and ground wire.

Your Price $79.99

Kicker Big 3 Package 1/0 Gauge Big 3 Upgrade Kit

Get all you need including wire cutters to upgrade your power and ground wire.

Your Price $149.99

Belva BBG3KT CCA 1/0 Gauge Big Three Kit

Features everything needed to upgrade factory power and ground wire.

Your Price $39.99

StreetWires FB4

4 AWG / 4 Gauge Firewall Bushing

Your Price $6.95

NVX XDBU4 - Top of the Line!

Distribution Block with Two 1/0 or 4 AWG Inputs and Four 4 or 8 AWG Outputs

Your Price $17.99

Professional Installation for your Car Power Amplifier

Covers labor charges through our professional installer network.

Your Price $89.99

NVX XIV45 4-Channel RCA Audio Interconnect Cable

5 Meters (16.4 ft.) 4-Channel RCA Audio Interconnect Cable with Dual Twisted Pair Hyper-Flex Technology

Your Price $23.99

Kicker 4-Channel RCA Audio Interconnect Cable

4 Meters (13 ft.) 4-Channel K-Series RCA Audio Interconnect Cable

Your Price $19.95

NVX XWS1225 12 AWG Speaker Wire

25 ft. of True 12 Gauge 100% Copper EnvyFlex Speaker Cable/Wire

Your Price $39.99

NVX XWS1625 16 AWG Speaker Wire

25 ft. of True 16 Gauge 100% Copper EnvyFlex Speaker Cable/Wire

Your Price $13.99

Belva BBSW127 12 AWG Speaker Wire

12 Gauge 7 Meter (23 Ft) Speaker Wire (CCA)

Your Price $14.99

Belva BBSW167 16 AWG Speaker Wire

16 Gauge 7 Meter (23 Ft) Speaker Wire (CCA)

Your Price $12.99

Scosche SPL Meter SPL1000F

Handheld boomSTICK measures your SPL range from 60 to 135 dB

Your Price $21.99

AutoSound 2000 CD-102

High Frequency Test CD specifically designed for the set-up and evaluation of sound system imaging and placement.

Your Price $11.99

AutoSound 2000 CD-104

Audiophile reference series test disc for evaluation of all audio components.

Your Price $11.99

XIX2025 Strapping RCA

0.25 Meter (0.86 ft) Hyper-Flex RCA cable w/ Serpentine-Cut Nickel Plated Connectors

Your Price $12.99

Product Summary

Manufacturer

Model Number

11ZX6504

UPC

713034054818

Weight

13.50lbs

Internal SKU

11zx6504

Internal Product ID

31881

Sonic Electronix Wiring Guide

Wiring Diagram Legend

Warning: The image depicted shows the resistance change when wiring multiple subwoofer terminals. Please refer to your subwoofer's owner's manual for the proper wiring of its terminals. Sonic Electronix, Inc. is not responsible for damage caused to your audio system or vehicle due to improper installation. Please call tech support at 1-877-289-7664 if you require additional assistance.

Product Name: Kicker ZX650.4 (11ZX650.4)