JL Audio FiX 86 Digital Sound Processor

OEM Integration Digital Sound Processor with Automatic Time Correction and Digital EQ

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List price $399.99

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JL Audio FiX 86 Digital Sound Processor



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Nuforce HEM2 Reference Class


Special Price $20 ($99.99 if purchased separately)

Nuforce HEM2 Reference Class

• Knowles Balanced Armature Drivers (1 per each ear)
• Acoustically calculated and vibration free Lexan earpiece
• NuForce Linear-Phase crossover
• Two replaceable cables
• Comply Soft Foam Ear Tips
• Cables are 20% silver-plated OFC copper conductors
• Impedance: 26 Ohms

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JL Audio Store

General Features:

  • OEM Integration DSP with Automatic Time Correction and Digital EQ
    • 8 Channel inputs
    • 4 Channel Stereo + 2 Subwoofer RCA Outputs
    • 1 Digital Optical (Toshlink) Output
  • 24-bit DSP processor
  • Dual 1/3 octave equalizers
  • Accepts virtually any OEM analog audio signal
  • 2 activation methods
    • Automatic signal/DC offset sensing
    • Remote turn on
  • Sound calibration takes 30 seconds with no special equipment needed
  • Optional Digital Remote Controller available, sold separately: JL Audio DRC-200
    • Volume Control
    • Subwoofer Level Control
    • Preserves hands-free calling
  • Dimensions: 4.29"W x 6.14"D x 1.85"H
  • Authorized Internet Dealer
  • 1-year Manufacturer's Warranty

Check out the FiX 86 Owner's Manual

General Specifications

Equalizer Bands
The number of graphic or parametric equalizer bands the receiver has. The better the EQ, the more likely you will be able to "tweak" your sounds to your desire.
2 band
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.
Total Number of Inputs
This is the total number of input connections that go into the unit.
Total Number of Outputs
This is the total number of output connections that the unit will produce.
6 (Three Pairs of RCA Outputs)
Max Output Level
The maximum level (in volts) of signal output. A higher level will increase the clarity and boost your signal.
30 volts
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).
20 - 20,000 Hz
THD (Total Harmonic Distortion)
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.
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.
96 dB
The width of the item from left to right (side-to-side) measured in inches.
The height of the item, measured from top to bottom, in inches.
The front-to-rear depth of the item, in inches. If the item is angled or slanted, this value is the bottom measurement.

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


Ames, IA

Perfect for confusing factory system

September 28, 2016

This product is awesome. I used it in a 2013 Chevy Cruze to replace the factory Pioneer system. This went in before the factory amp to replace it and install a JL XD400/4v2 and a JL XD600/1v1. Tested the rca's with a SMD DD1 after running the calibration set up and got 0 distortion at all volume levels. That's amazing. Usually running a aftermarket system on a factory head unit is a nightmare and sounds horrible, thanks to JL, this is no longer a difficult process. Thanks JL Audio, for once again, pushing the limits. Set up is simple, almost plug and play. Box takes up a little space and fits well with the sleek designs that JL has become to be known for. Using spacers we raised the unit up to run wiring behind it between the two amps. Using a relay, we evenly distributed turn on to each amp and the FiX. Running the Calibration process scared the living day lights out of me, since I wasn't expecting the sound at 75% volume. After a simple calibration process we read all green on the FiX, and continued on with the install. After everything was set up the we tested no distortion at 1000hz and a SMD DD1, then tested the outputs to tune the system to no distortion from the XD400/4 at 75% (35vol) on the HU. The FiX... "Fixes" so well in the system, unless the song it self is playing frequencies difficult for the speakers, turning the bass all the way up or mid, or treble, (What I'm limited too on the Chevy MyLink system) creates no muddy sloppy bass notes, buzzing and burping in the doors or rear deck, just clean smooth tones and music. The ONLY suggestion we ran into on the unit after having installed it, was a way for the FiX to detect and aid in the process of dealing with door chimes and voice prompts. Yes the DRC200 will enable a hands free mode, but more to the point, it would still come across the whole system, as well as back up warnings and door chimes. System:: XS Power D4700 JL Audio:: XD400/4v2; XD600/1; C2690tx; XD-PCS2-2B Pioneer:: TSD1730C; 1702R

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Browse 3 questions and 3 answers
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Why did you choose this?
Sonic Electronix Store
I chose this unit to keep my oem radio on my 14 ram 2500, heard a lot of great things about it!!
Victor V on Nov 30, 2017
A DSP is a must for performance sound in a Toyota Tundra.
Kristen Marek on Sep 29, 2017
Have a 2009 Escalade with the factory stereo. I would like to keep it however I want to replace all 9 speakers plus the sub. I have 1 6.5 in each door and 1" tweeters in each A pillar along with 1" tweeters in the rear pillars as well. I have a 3" center and a factory sub. How will this work? I need the doors to be summed with tweeters and still have the center and sub. Please help..
Ryan J on Mar 27, 2017
Best Answer: The model number of this product suggests that you can connect all your speakers to this unit to provide the unit with a signal, however, there will only be 6 outputs (even though the specifications state that there are only 2 analog RCA outputs). You can connect 1 output to your 3" center, 4 outputs to each of your doors/tweeters, and the final one for your sub. You will require an amp or multiple amps to power each of these speakers. I suggest getting two stereo blocks -OR- a single 4 channel amp for your doors/tweeters, a monoblock for your subwoofer and an additional amp to power the 3" center. However, I am concerned with this products description stating only 1 pair of analog RCA outputs.
Reply · Report · peterletran on Jun 8, 2017
· Add Answer · I Have This Question Too (3)
According to this product model number, this unit is supposed to have 3 pairs of analog RCA outputs. Is the product description incorrect or is the model number incorrect?
peterletran on Jun 8, 2017
· Add Answer · I Have This Question Too (0)

Product Summary


Model Number

FiX 86



Internal SKU


Internal Product ID


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 FiX 86 Digital Sound Processor

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JL Audio FiX 86 Digital Sound Processor

OEM Integration Digital Sound Processor with Automatic Time Correction and Digital EQ


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Belva BBIC65

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Scosche TK12

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



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