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JBL Subwoofer + Kicker Amp Upgrade Kit

S3-1024 1350W 10" Series III Subwoofer + KX400.1 400W RMS KX Series Monoblock Amplifier + XKIT42 2-Chan. 4G OFC Amp Installation Kit

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JBL Subwoofer + Kicker Amp Upgrade Kit

S3-1024 1350W 10" Series III Subwoofer + KX400.1 400W RMS KX Series Monoblock Amplifier + XKIT42 2-Chan. 4G OFC Amp Installation Kit


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25 ft. of Streetwires 12 Gauge Speaker Cable

You'll need speaker wire to hook up that new subwoofer!


20 Square Feet of Sound Dampening Material

NVX Sound dampening is thicker than competitors, eliminates rattles and gives you bigger bass!


2" Universal, Professional Heavy Duty Roller for Sound Damping/Dampening

Universal rubber roller to make it easy to install sound dampening.



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JBL S3-1024
10" (250mm) High-Performance Car Audio Subwoofer

JBL believes sound quality should never be compromised. And Series III subwoofers make sure you don't have to compromise flexibility, either. That's because the high-performance, step-up subwoofers feature SSI™ (Selectable Smart Impedance), an exclusive impedance switch that lets you select the optimum impedance—2 or 4 ohms—for your system. Special aero-cooling design in the voice coil boosts power handling as well as reliability. And an oversized voice coil handles more power than common two-inch voice coils. More power, more reliability, more flexibility—and no compromising. When you're ready to step up, Series III is your subwoofer.

Key Features:

    SSI™ (Selectable Smart Impedance)

    Most car audio system designs call for 2- or 4-ohm impedance. Series III subwoofers feature an exclusive dual impedance switch that lets you choose either load impedance option. Not available from any other manufacturer, SSI lets you reconfigure your system by simply flipping a switch.

    Aero-cooled voice coil

    The Series III voice coil significantly increases power handling and improves reliability by going with the flow—of air. The woofer's motor channels air pumped by the cone movement past the voice coil, and the voice coil former exposes the coil's inner and outer surfaces to the airflow. This aero-cooling design is unique among aftermarket subwoofers.

    Oversized voice coil

    The three-inch (75mm) voice coil proves you don't have to be a heavyweight to pack a serious punch. It handles more power than conventional two-inch voice coils, yet it's lighter than four-inch voice coils. It strikes the perfect balance between thermal power handling and low mass.

    Premium screw-down terminals

    Power is the lifeblood of any subwoofer. The terminals on the Series III accommodate up to 8-guage wire (8.37mm2 cross section), which transfers low-resistance, low-loss power to the woofer, even over long wire runs. This ensures the subwoofer—and your music—has the power it needs.

The Sound of quality

Sonic Electronix, one of the leaders in car audio, recently visited Harman, the premium global audio and infotainment group, at their research and development locations in Northridge, California and Detroit, Michigan. The purpose of these visits was to utilize and combine the powerful brand of Harman and the industry leading knowledge behind Sonic Electronix to begin working together on developing future car audio projects.

JBL S3-1024 **Toggle between 2-Ohm & 4-Ohm Impedance!**

1350W 10" Series III Subwoofer with Selectable 2-Ohm or 4-Ohm Impedance
Quantity: 1

Save on the Open Box Version:
Available Now - CLICK HERE

General Features:

  • 10" Series III Subwoofer
  • Power Handling:
    • Peak: 1350 watts
    • RMS: 450 watts
  • Recommended power range: 200 - 450 watts RMS
  • Nominal Impedance: Single 2 or 4 ohm
  • Polypropylene Cone Material
  • Nitrile Butadiene Rubber (NBR) Surround
  • SSI™ (Selectable Smart Impedance)
  • Aero-cooled voice coil
  • Oversized 3.0" voice coil
  • Premium 8 AWG Screw-down Terminals
  • Stamped Steel Basket Frame
  • Top-mount depth: 6-15/16"
  • Cutout diameter: 9-7/16"
  • Frequency Response: 30 ~ 175 Hz
  • Sensitivity: 91 dB
  • Sealed Enclosure Recommendation: 0.50ft³
  • Ported Enclosure Recommendation: 1.50ft³
  • *Infinite-baffle Mountable
  • Authorized Internet Dealer
  • 1-year Manufacturer's Warranty

  • Priced Individually

Check out the JBL S3-1024 Owner's Manual

*Infinite-baffle mounting is possible, but the subwoofer's mechanical power handling will be reduced because there will be no volume of air to stiffen the subwoofer's suspension and prevent overexcursion. If you choose infinite-baffle mounting, consider the RMS and peak power-handling ratings to be half of what is listed

Tips for Installing the your subwoofer

Kicker KX400.1 (40KX400.1)

400W RMS KX Series Monoblock Class-D Car Power Amplifier
Quantity: 1

Kicker Always Exceeds Rated Power

General Features:

  • KX Series Monoblock Class D Car Amplifier
  • RMS Power Rating:
    • 4 ohms: 200 watts x 1 chan.
    • 2 ohms: 400 watts x 1 chan.
  • Max power output: 800 watts x 1 chan.
  • Variable Kick EQ+ Bass Boost (0-18 dB Selectable 20-80 Hz, Variable Q: 1-5)
    • Wired remote bass level control included
    • Kick EQ+ is designed to let you fine tune your bass boost - the possibilities are practically endless
    • Selectable boost frequency from 20-80 Hz gives you control of the boosted frequency - typically this is fixed at 45 Hz on most amplifiers
    • Q Factor: 1-5 let's you narrow or expand the width of the selected bass frequency
  • High-efficiency regulated MOSFET power supply
  • LED power (green) and protect (red) indicators
  • Soft start turn-on
  • Mono channel operation
  • Preamp RCA outputs to daisy chain multiple amps
  • Equipped with FIT (Fail-Safe Integration Technology) to accept output from virtually any source
  • FIT’s lab-grade, balanced differential inputs offer best possible noise rejection
  • Double-sided fiberglass circuit board
  • Built-in crossovers and adjustable KickEQ for dialing it in
  • DC offset or 12v remote auto turn-on modes
  • Angled custom-tooled power connectors
  • Stylish magnetic panels cover controls and glass-fiber composite end panels
  • Dual speaker terminals simplify the hookup of multiple speakers
  • Heavy duty high-mass aluminum alloy heat-sink
  • Input sensitivity:
    • Low level: 125mV-5V
    • High level: 250mV-10V
  • Variable low-pass filter (40-160 Hz, 24 dB/octave)
  • Variable low-pass filter (10-80 Hz, 24 dB/octave)
  • Frequency Response: 10-160 Hz
  • CEA-2006 compliant amplifier
  • 4 gauge power and ground wiring is recommended for installation. Contact us for information regarding a discount on select amplifier kits from our website when purchased together with this amplifier. Click Here for our contact information.
  • Dimensions: 8-5/16"W x 8"L x 2-1/8"H
  • Authorized Internet Dealer
  • 2-year Manufacturer's Warranty


100% Copper, 2-Chan. True Spec 4 Gauge Amp Installation Kit w/RCA Interconnect & 40 ft Speaker Cable
Quantity: 1

General Features:

  • 4 Gauge 2-Channel X-Series Complete Amplifier Installation Kit
  • Designed specifically for car audio systems up to 1000 watts RMS
  • Premium power and ground wire provides optimal power transfer
  • Made from silver-tinned 100% virgin copper for a pure uninterrupted transfer of power and signal
  • Audio Interconnect RCA cables are made with twisted-pair technology for noise reduction
  • Solid Brass and satin-chromed ANL/Mini-ANL Fuse holder offers ideal protection for high powered systems
  • True-to-Gauge cables/wires meet or exceed the industry standard of copper required for the gauge size
  • Strand Count: 1862
  • BC-5W2 Compliant
  • Authorized Internet Dealer
  • 1-year Manufacturer's Warranty

Kit includes:

  1. 20 ft. (6.1 meters) Frosted Blue 4 gauge power wire with seamless crimp ring terminal
  2. 3 ft. (.91 meters) Frosted Black 4 gauge ground wire with seamless crimp ring terminal
  3. 20 ft. (6.1 meters) Clear 18 gauge remote lead wire
  4. 40 ft. (12.2 meters) Frosted Black/Blue 16 gauge speaker wire
  5. One 16 ft. (5 meters) 2-channel twisted construction RCA interconnect Cable (NVX XIV25)
  6. One NVX XMANL04 ANL/Mini-ANL Fuse Holder with 100 amp Mini-ANL fuse
  7. One Black rubber firewall grommet
  8. Two 4 Gauge Nickel Plated spade terminals
  9. Four 18 Gauge Spade terminal
  10. Two 18 Gauge Red butt connectors
  11. Four 16 Gauge quick disconnect
  12. Five 16 Gauge Nickel Plated spade terminals
  13. Ten 6" Black zip ties

Subwoofer Specifications

Subwoofer Size
Refers to the diameter of the subwoofer, measured in inches.
Peak Power Handling
Peak power handling refers to the amount of power a speaker can handle during a brief musical burst. The RMS power range figure is a much more reliable rating for determining the speaker's power requirements. The Peak power handling specification is typically rated per speaker unless otherwise noted.
1350 watts
RMS Power Handling
The RMS power is the amount of power the speaker requires to operate safely and properly. RMS Power Handling refers to the amount of power a speaker can handle on a continuous basis. We recommend powering your speakers or subwoofer with 80%-120% of its recommended RMS rating. The RMS power handling specification is typically rated per speaker unless otherwise noted.
450 watts
Voice Coil(s)
Dual voice coil subs have more wiring flexibility than single voice coils subs; however, single voice coil subwoofers provide easier hookup options for wiring multiple subwoofers in parallel or series. You may also run a dual voice coil (DVC) sub in parallel, series, or combination. A quad voice coil has four voice coils and is equal to two dual voice coil subwoofers as far as wiring goes.
Impedance (Per Voice Coil)
The load value (in ohms) that the speakers present to the amplifier per voice coil - the amount of resistance to the current flow. This is a key specification as subs wired in parallel or low impedances can create problems with your amplifier and potentially void all warranties. We encourage you to ask our support department prior to purchase if you do not understand which impedance level will suit your application best.
2 or 4 ohms
Voice Coil Diameter
Diameter of voice coil, usually measured in inches.
Frequency Response
The range of frequencies the speaker will reproduce (lowest frequency to the highest). Bigger is better, meaning the wider the range, the better. The optimal range is 20 - 20,000 Hz (which is the range of human hearing).
30 - 175 Hz
An efficiency or sensitivity rating tells you how effectively a speaker converts power into sound. The higher the number, the more efficient the speaker and the louder it will play with the same input power. An efficient speaker helps you maximize your available power. Most sensitivity ratings measure the speaker's output with 1 watt of input, 1 meter from the speaker. Some speakers' sensitivity is measured with 2.83 volts of input, instead of 1 watt.
Efficiency (1w/1m) is not an accurate indicator of a subwoofer's output capability and should not be used as a comparison to other speakers or subwoofers to determine which one is "louder".
91 dB
Xmax (millimeters)
Typically measured in millimeters, the Xmax value is the measure of a speaker cone's maximum excursion in one direction while maintaining a linear behavior.
12 mm
Subwoofer Design
This is the design of the subwoofer or the opening of the subwoofer enclosure. Each design has it's own benefits, whether it is a square, circle, or oval.

Round/Circle: This is the typical and common subwoofer design. They have a round cone and are a circle in design.

Square: These woofers are able to achieve a greater cone area in a smaller space. Because of the greater surface area, some square subwoofers will be louder than a round subwoofer of the same size.

Round / Circle
Main Cone Color
This is the color of the speaker's or subwoofer's cone.
Woofer Composition
Lightweight woofer cone materials are essential for efficient operation. Poly cones produce exceptional sound and are sturdy against various changes in temperature. Paper cones are very efficient, and when treated for moisture resistance, will perform at a high level. Poly refers to polypropylene, which is thermoplastic or fibers that are polymers of propylene. IMPP refers to injection molded polypropylene, a commonly used process and material in speakers.
Woofer Surround
A speakers surround is part of the suspension system. The surround protects the cone and prevents it from being displaced as it flexes out from the basket. It is usually made of a durable material like treated foam or rubber in order to withstand the strenuous job of producing bass frequencies.
Nitrile Butadiene Rubber (NBR)
Subwoofer Grille
Most subwoofers are able to accommodate a universal grille; however, some subs include a grille and others have a specific, optional grille available for purchase separately. If "yes", then the subwoofer includes a grille. If "optional (sold separately)" the matching grille will need to be purchased in addition to the sub.
Re-Cone Kit Available
Some higher end subwoofers have replaceable cone assemblies. In case of a blown woofer, a recone kit allows for a simple replacement, as opposed to purchasing an entire new subwoofer.

Recommended Enclosure Specifications

Recommended Enclosure Type
This is the recommended type of enclosure that the subwoofer should be installed into. Some subwoofers are specially designed for particular enclosures.

Sealed: These enclosures completely enclose the air inside the box. These boxes produce a tight bass.

Ported/Vented: These enclosures have a slot of air to escape from the box. The result is a sound that has more "boom".

Bandpass: These are a combination of both sealed and ported enclosures. They can be very efficient, but require tuning for the best response.

Ported / Vented
Optimum Sealed Box Volume
This value indicates the ideal sealed box volume that the manufacturer recommends for the subwoofer. The volume is typically displayed in cubic feet.
0.50 cubic feet
Optimum Ported Box Volume
This value indicates the ideal ported box volume that the manufacturer recommends for the subwoofer. The volume is typically displayed in cubic feet.
1.50 cubic feet
Top-Mount Depth
The depth when installed on top of the mounting surface. Measured from the bottom of the speaker's magnet to the bottom of the mounting holes on the rim of the speaker.
Cutout Diameter
The actual diameter of the hole you will need to cut out if you are creating a new mounting location for this speaker, or if you are mounting a subwoofer in a box.
Shallow Mount Installation
This means that the subwoofer/speaker is designed to be installed in areas that do not have a lot of space. Shallow mount subwoofers are typically found under a seat or behind the seat in some trucks.

Shallow mount speakers will typically have a mounting depth of 2" or less, while shallow mount subwoofers will typically have a mounting depth of 3" or less.


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Parts Warranty Duration
1 year
Labor Warranty Duration
1 year
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Accessory Tools and Products

Accessories added

25 ft. of Streetwires 12 Gauge Speaker Cable

You'll need speaker wire to hook up that new subwoofer!

Your Price $49.95

Belva 23 ft. of 12 Gauge Speaker Wire

Ultra-flexible PVC blended jacket for easy installation.

Your Price $14.99

20 Square Feet of Sound Dampening Material

NVX Sound dampening is thicker than competitors, eliminates rattles and gives you bigger bass!

Your Price $53.99

Stinger Sound Dampening Trunk Kit

Stinger's Roadkill sound dampening series is sure to kill unwanted road noise and rattles! Enough sound dampening for your whole trunk!

Your Price $70.97

Dynamat Sound Dampening Trunk Kit

Did you know sound dampening will reduce those annoying rattles and even increase your SPL?

Your Price $97.97

2" Universal, Professional Heavy Duty Roller for Sound Damping/Dampening

Universal rubber roller to make it easy to install sound dampening.

Your Price $7.99

Car Stereo and Speaker Installation Tool Kit

Includes Test Light, Crimp/Splice Tool, Multi-bit Screwdriver and more.

Your Price $18.99

Cordless Multi-Functional Heat Tool Soldering Iron Kit

Continuous working lock allows you to work without holding down trigger.

Your Price $64.73

1mm All Purpose Solder

Solder is all purpose for use on most projects where solder is needed.

Your Price $8.99

12 oz. Can of Adhesive Spray

Spray adhesive used for adhering carpet to subwoofer boxes without bubbles.

Your Price $8.97

Gold Plated Dual Terminal Banana Plug Connector

Enables an expandable, secure connection accepting up to 8 gauge wire.

Your Price $1.99

Universal 10" Subwoofer Grille

Keep your subwoofer safe from accidental damages with this amazing grill.

Your Price $16.99

Universal 10" Subwoofer Grille

Keep your subwoofer safe from accidental damages with this amazing grill.

Your Price $19.95

10" Protective Waffle Subwoofer Grille

Keep your subwoofer looking amazing while keeping it safe.

Your Price $4.99

Scosche SPL Meter

Monitor the noise level of your new car audio system with this SPL meter measuring from 60-135 dB.

Your Price $21.99

Impedance Meter / Signal Generator

Easy to locate tuning frequencies of passive radiators and ported enclosures

Your Price $285.25

1 JBL Subwoofer + Kicker Amp Upgrade Kit Subwoofer

Mono Amp

2 JBL Subwoofer + Kicker Amp Upgrade Kit Subwoofers

Mono Amp

Mono Amp - Option 1

2 Channel Amp

2 Channel Amp - Bridged

3 JBL Subwoofer + Kicker Amp Upgrade Kit Subwoofers

4 Channel Amp

4 JBL Subwoofer + Kicker Amp Upgrade Kit Subwoofers

Mono Amp

2 Channel Amp

4 Channel Amp

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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: JBL Subwoofer + Kicker Amp Upgrade Kit

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