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JL Audio FiX-LSA-4

Load-sensing adapter for FiX™ processors

Item # 13698124

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Item # 13698124

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About the JL Audio FiX-LSA-4

Buck Pomerantz

Make sure you can FiX™ your factory radio sound

Some factory radios and amplifiers will not work without sensing that its speakers (low-impedance loads) are connected to their outputs. So adding a sound processor that uses the factory wiring for its inputs, like a JL Audio FiX 82 or FiX 86, would normally result in no audio at all. JL Audio's FiX-LSA-4 load-sensing adapter plugs in line with your FiX processor's inputs, presenting a load to the factory system, so signal flow gets restored and the music plays on. Dimensions: 3-7/8"W (16-1/2" with connectors) x 1-1/8"H x 1-1/2"W. Warranty: 2 years.

What's in the box:

  • FiX-LSA-4 Load Sensing adapter
  • Installation Instructions
MFR #98124

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More details on the JL Audio FiX-LSA-4

Mark G.

Product Research


Overview: The JL Audio FiX 82 and FiX 86 OEM Integration DSP products are designed to enhance the sound of factory audio systems. Some OEM amplifiers and head units employ a load-sensing startup protection circuit. When powered up, the OEM system checks the impedance of the connected load, and will mute the audio if the impedance is outside of the predicted range. The impedance of the FiX DSP input is typically higher than most speakers that are used in these systems, causing the OEM head unit or amplifier to mute. To correct this, the FiX-LSA-4 will need to be inserted in-line with the input signal. The FiX-LSA-4 presents a safe and appropriate load to the OEM component to correct the audio muting.

Note: You must recalibrate the FiX OEM Integration DSP after installing this load sensing adapter (LSA). The LSA changes the input signal level, requiring recalibration of the FiX.

Connections: The FiX-LSA-4 has two sets of 4-conductor Euroblock connectors on each end. The male output plugs connect to the FiX's input connectors, while the female input plugs connect to the FiX 82 or FiX 86 processor's input plugs. The two connectors on each end are the same, so you must observe the wire colors to maintain correct channel alignment. An additional FiX-LSA-4 may be needed if the FiX is connected to more than four channels of audio from the OEM head unit or amplifier.

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Customer Q&A

2 questions already asked

I have a 2017 F-150 withOUT Sony, and am using a JL Audio FiX-86 processor. Will this bring my door chime and backup sensor beeps back to the door speakers instead of the little crappy in-dash chime?
jordan  Nov 08, 2017
2 answers
Well on mine I have the 900HD JL amp and when the amp is on the chime goes thru all speakers which when backing up with the blind spot will scare the heck out of you to me it's the only downfall to this setup. I have the lc7i and that has a jumper to solve this issue but this one does not but the sound does not compare to the FiX-86 if calibrated properly. Hope this helps
mike  Nov 15, 2017
The JL Audio FiX-LSA-4 will not 'bring back' the sounds you're seeking. The PRIMARY function of this unit is to supply your stock processer/system with the line voltage it seeks during operation. Many stereo systems seek a signal (voltage) in return from the stock speakers (in essence making sure the speaker is attached) in order to send a signal...the ONLY thing this module does is 'fake out' the stock stereo system when you've changed speakers so that the system plays normally (doesn't realize there is a change). If the sounds you're looking for played through the door speakers PRIOR to you installing your Fix Processer then it's likey you installed the Processer inline before (not after) Ford's stock processing unit which may be supplying those sounds. A through review of JL Audio's website will explain where/how the TwK and FiX OEM integration boxes should be installed.
robert  Nov 14, 2017
is this a problem on the sync3 radios in the new 2016 mustang?
eco  Apr 17, 2016
1 answer
You will want to contact an Advisor by phone (1-800-324-9695) or online chat to discuss compatibility with your factory system. They will be able to pull up your vehicle and see if this will integrate. If it does not, then they will also be able to discuss other options with you.
kenneth  Apr 18, 2016 (Staff)

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