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JL Audio TR400-CXi

210W 4" / 4" x 6" Evolution TR Series 2-Way Coaxial Speaker System

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JL Audio TR400-CXi

210W 4" / 4" x 6" Evolution TR Series 2-Way Coaxial Speaker System


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NVX 25 ft. of True Spec 16 Gauge Speaker Wire

100% OFC wire with a noise eliminating twisted-pair technology to provide crystal clear sound.


Car Stereo and Speaker Installation Tool Kit

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


NVX SDSK2 Speaker Kit

Eliminates speaker panel distortion and reduces vibration, rattles, and squeaks!



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50% off Complete Car Stereo Tool Kit with Purchase!

Save 50% on the Scosche TK12 installation tool kit with select purchase! This kit includes a voltage test light, wire stripper and many other tools you need to install your system! Cannot be combined with any other offer.




JL Audio TR400-CXi



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Scosche TK12 Car Audio Installation Kit


Special Price $9.49 ($18.99 if purchased separately)

Scosche TK12 Car Audio Installation Kit

12V Car Stereo Installation Kit • Includes Wire Stripper/Cutter, Screwdriver, RCA Cable Runner, Panel Removal Tool, Test Light, and other Installtion Accessories • Perfect for Installing a First Car Stereo

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JL Audio Store
JL Audio Evolution® TR Series Coaxial Speaker System
JL Audio Evolution® TR Series Coaxial Speaker System

Silk Dome Tweeter

Textile Balanced Dome Tweeters

JL Audio TR tweeters incorporate woven textile dome diaphragms to deliver clean, extended response, on and off axis. Their motor features a neodymium magnet, and are ferrofluid cooled and damped. The small size of the TR tweeter minimizes tweeter protrusion, allowing TR coaxials to fit behind most factory speaker grilles. It is these technologies that allow the TR coaxial systems to deliver a proper full-range sound that will compliment the staging of larger drivers within an audio system.

JL Audio Quality

JL Audio Quality

The TR series coaxial system features mineral-filled polypropylene cones, long excursion capabilities and stamped steel frames. The woofer design benefits from JL Audio's vast woofer design experience and advanced modeling systems. Long-excursion woofer designs allow TR's to handle real-world power without compromising low-frequency output and mid-bass capability. It is these qualities that help the TR speakers provide unsurpassed value and performance in their price class.

Product Features:

  • 4" Evolution TR Series 2-Way Coaxial Speaker System
  • Power Handling:
    • Peak: 210 watts per pair / 105 watts each
    • RMS: 70 watts per pair / 35 watts each
  • Recommended Power Range: 10 - 50 watts per channel
  • Injection-molded, mica-filled, polypropylene cone woofer
  • Butyl rubber surround
  • Flat-profile, symmetrical-roll spider
  • 1.00" (25mm) Voice Coil
  • Flexible mounting system w/ detachable mounting tabs
  • Included 4" x 6" injection-molded adaptor plates
  • 0.50" Textile dome tweeter
  • Integral phase plug
  • Neodymium magnet tweeters
  • Ferrofluid cooled and damped
  • Black Steel Mesh Grille with An Electroformed JL Audio Logo Included
  • Top-mount depth: 1.81"
  • Cutout Dimensions: 3.81"
  • Nominal Impedance: 4 ohm
  • Efficiency: 84.5 dB @ 1 watt / 1 meter
  • Frequency Response: 71 Hz - 22 KHz ± 3 dB
  • Authorized Internet Dealer
  • 1-year Manufacturer's Warranty

  • Priced Per Pair.

Check out the JL Audio TR400-CXi Owner's Manual

Speaker Specifications

This is the manufacturer product line of speakers.
TR (JL Audio)
Priced Per
Car Speakers are typically sold in pairs so you will receive 2 speakers for each speaker purchase on speakers marked "Priced Per Pair". If a speaker is marked "Priced Per Each" then the speaker is sold individually and each purchase you make will result in 1 speaker. High-powered tweeters, midrange and full-range pro audio for car speakers are typically sold per each speaker.
Speaker Size
Refers to the size of the speaker measured in inches. Every vehicle has standard application sizes. Please use our vehicle fitment guide for your vehicle's specific speaker sizes if you do not know them.
The number of individual drivers in a car speaker. Speakers with 2 drivers are known as a 2-way, and 3 drivers are known as a 3-way. Component systems are often referred to as "separates" because the tweeter is not attached to the midwoofer (main speaker driver) and mounts separately in a location such as a door post. Component systems typically come with an external crossover so you can easily adjust the high and low frequencies sent to both the midwoofer and the tweeter. Center channel speakers are great for those looking to have surround sound in their vehicle.
Tweeter Design
Designs such as cone, dome, semi-dome, balanced dome, and whizzer are most popular. Cone tweeters are simple, efficient and typically are the most reasonably priced. Dome tweeters are used in most home speakers, and provide a smoother and more accurate sound. Semi-dome design is one with a dome placed inside a cone. A Balanced dome driver is a semi-dome with equal reproduction area given the cone and dome portions of the driver. A whizzer tweeter is a separate tweeter cone driven by the voice coil of the woofer.
Tweeter Size
Refers to the size of the tweeter. Typically, smaller tweeters produces less output with higher frequency response.
Tweeter Composition
Materials such as polypropylene, silk, cloth, and paper are the most common, where as many more recent tweeters are now manufactured with composites such as Aluminum, Titanium, Mylar, and other materials.

PEI is an acronym for "Polyetherimide" which is an amorphous, amber transparent, high-performance thermoplastic.

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.
Injection Molded Polypropylene (IMPP)
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.
Butyl Rubber
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.
105 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.
35 watts
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".
84.5 dB
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).
71 - 22,000 Hz
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.
4 ohms
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.

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 Dimensions
Refers to the dimensions of the hole, measured in inches, required to contain the speaker.
Hi-Res Audio Compatible
This feature refers to if the product is capable of Hi-Res Audio (HRA) playback.
Speaker Grilles
A grating or screen of metal or plastic bars or wires, mounted in front of a speaker as protection. If yes, the speakers will include matching speaker grilles. If no, there are no grilles included.
Number of Speakers
This is the number of speaker that is included in the package. Each purchase will result in receiving the number of speakers indicated here. Please note that some items will have multiple woofers in the same enclosure. For sets of component speakers, this number will refer to the number of sets of speakers (For example, 2 would indicate the purchase includes 2 woofers and 2 tweeters).

Please refer to the product image and description for further details about the speaker.


Specials with this Item

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Warranty and Return Policy

Parts Warranty Duration
1 year
Labor Warranty Duration
1 year
Warranty Provider

Summary of Customer Ratings & Reviews

Rating Distribution

5 Star
4 Star
3 Star
2 Star
1 Star

Average Attribution Rating


Falls of Rough, KY

JL Audio TR400-CXi

October 23, 2009

We installed one of these in a 1980 camaro z28 and it added great, clear sound. It, along with two rear-deck mount 6x9's are being driven by a 350/4 JL Audio amp. I would suggest not only this speaker, but this entire JL Audio line to anyone... Happy Customers!!!!

26 of 31 found this helpful

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sacramento, CA

Good, but need an amp

July 6, 2011

Good speakers, very well built. The low sensitivity is a negative for hu power. You will need a small amp

21 of 26 found this helpful

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Hattiesburg, MS

wish they were cheapper!

April 13, 2006

Good sound quality, they come with the plates to fit them in bigger wholes, hard to distord them... but they are too expensive!

21 of 27 found this helpful

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Accessory Tools and Products

Accessories added

NVX 25 ft. of True Spec 16 Gauge Speaker Wire

100% OFC wire with a noise eliminating twisted-pair technology to provide crystal clear sound.

Your Price $15.99

25ft. 16 Gauge (AWG) Speaker Cable

25 Feet of true gauge JL Audio speaker wire.

Your Price $17.99

Car Stereo and Speaker Installation Tool Kit

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

Your Price $18.99

NVX XTGSP2 Tone Generator and Speaker Polarity Tester

Perfect for safely troubleshooting and testing audio systems

Your Price $29.99

Xscorpion WDCR2 Window and Door Clip Remover

Removes and installs handle and window crank clips.

Your Price $8.99

Encore Universal Four Door Power Door Lock Kit

Add Power Door Locking and Unlocking while you have the Door Panels removed

Your Price $29.99

NVX SDSK2 Speaker Kit

Eliminates speaker panel distortion and reduces vibration, rattles, and squeaks!

Your Price $14.99

Stinger Roadkill Speaker Kit

Use this to eliminate rattle from your speakers!

Your Price $10.99

NVX Sound Dampening Rubber Roller

Install your Sound Dampening with ease using this heavy duty rubber roller!

Your Price $7.99

4" x 6" to 4" Speaker Adapters

Perfect fit for 4" speakers!

Your Price $7.32

XTC 4" Round Foam Speaker Baffles

Creates a tight, acoustic seal behind the speaker to enhance the sound quality.

Your Price $8.99

16-14 AWG Butt Connectors

These blue butt connectors are ideal when connecting thicker speaker wire your new aftermarket speakers!

Your Price $4.49

16-14 AWG Blue T-Tap Adapters

Allows for fast and easy splicing of wires by easily tapping into the cable.

Your Price $2.58

16-14 AWG Quick Disconnect Connectors

These blue quick disconnect connectors make it easy to connect and disconnect speaker wire your to your new aftermarket speakers!

Your Price $13.26

Browse 2 questions and 2 answers
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Why did you choose this?
Sonic Electronix Store
I have always liked jl products
sam e on Jan 22, 2015
I understand that most speakers do well with an amp, and not just the head unit, but would you recommend an amplifier?
A shopper on Nov 8, 2014
Best Answer: Hello,

We absolutely recommend going with an amplifier. The lower power rating of these - 35w RMS - suggests they can be ran to ALMOST optimum from a headunit; But there is no doubt that you WILL get the optimum performance by using an amp. Said amp does not need to be very powerful - ~40w RMS @ 4ohms - and therefore won't be very expensive. Example, the Pioneer GM-A4604 or Kenwood KAC-6406.
Pioneer GM-A4604
Pioneer GM-A4604
Kenwood KAC-6406
Kenwood KAC-6406
Reply · Report · Customer SStaff on Nov 8, 2014
· Add Answer · I Have This Question Too (0)

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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: JL Audio TR400-CXi