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JL Audio CL441dsp CleanSweep®

Sound processor for use when adding amps and speakers to a factory system

Item #: 136441DSP

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14 Reviews | 2 questions - 6 answers

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You can keep the look and functionality of your factory stereo, and still get outstanding audiophile sound with JL Audio's CleanSweep sound processor. It connects to your factory stereo's speaker lines and cleans up the stereo's output by sweeping away any processing from the stereo that could diminish the sound quality.

Many factory stereos use built-in equalization designed to make cheap factory speakers sound better, but this dressed-up signal can prevent aftermarket speakers from living up to their potential. The CleanSweep uses a 32-bit digital signal processor to remove the factory adjustments, then sends your external amplifiers a perfectly clean signal.

The CleanSweep connects to your factory radio's speaker wires, then takes the output of your factory radio and eliminates the peaks and valleys of the preset equalization, leaving a pure, unadulterated signal for your aftermarket amplifiers, speakers, and subs to work with. Your music will spring to life, with resonant lows, sparkling highs, and a realistic sense of depth and presence.

Keep all your factory radio functions
Since the CleanSweep attaches to the speaker wire outputs of your factory radio, it doesn't interfere with any factory radio functions like OnStar® or hands-free calling. Use the two sets of preamp outputs to connect your new amplifiers, and build your system from there. Best of all, you can take the CleanSweep with you when you purchase or lease a new vehicle.

Once you've connected the CleanSweep, pop the included CD into your stereo, and the CleanSweep corrects the equalization in as little as 20 seconds. You don't have to adjust anything — the CleanSweep utilizes its built-in 120-band digital equalizer automatically, without the need for external control devices. The equalizer settings are saved in the CleanSweep's memory, even if you disconnect the car battery.

Adds an auxiliary input
The CleanSweep not only improves your sound, it adds extra functionality to your system. The built-in auxiliary input lets you connect an extra source, like an iPod® or a plug-and-play satellite radio to your system, and enjoy the superior sound quality of a direct audio connection. A remote-mount volume knob lets you adjust system volume and select your auxiliary source. If you choose, you can still use the factory radio's volume, treble, and bass controls as well.

Accessories
The optional CL-SES source switch lets you expand the CleanSweep to accommodate up to three auxiliary sources. Some factory systems use more than just front and rear speaker outputs — if you have a system like this, you'll need to purchase the CL-SSI Signal Summing Interface to merge the different signals so they can be processed by the CleanSweep. Please call an Advisor at 1-888-955-6000 if you have questions about integrating the CleanSweep into your factory system.

Product Highlights:

  • system integration sound processor with automatic digital EQ
  • automatically equalizes output of factory stereo
  • speaker-level inputs (front and rear)
  • two sets of preamp outputs (front and rear) for connection to external amplifiers
  • 120-band digital equalizer
  • auxiliary input
  • dash-mountable volume knob and source selector
  • 8-1/4"W x 1-1/2"H x 4-3/8"D
  • warranty: 2 years
  • Our 60-day money-back guarantee

Hands-on research

What's in the box?

Download owner's manual

  • OEM Audio Interface with Automatic Digital EQ
  • Black volume control knob with attached 4' cable and LED with attached 46" cord
  • 18' Volume control extension cable
  • 36" Power connection harness
  • 38" OEM input connection harness
  • Silver metallic knob
  • 2 Nuts
  • 2 Washers
  • Plastic mounting grommet for LED
  • CleanSweep Calibration CD version 1.0
  • CL441dsp Owner's Manual
  • In a separate box:
  • CL-LSA Load-Sensing Adapter with an attached 3.75" harness on one end and an attached 7" harness on other end
  • CL-LSA Installation Instructions

Product Research

Features
Connections/Controls/Indicators
Specifications

Features

Overview: The JL Audio CleanSweep CL441dsp OEM Audio Interface with Automatic Digital EQ is a DSP-based solution that permits almost any factory-installed audio system to serve as the source for a high-performance aftermarket sound system while also providing input for an additional source of your choice.

OEM Integration: The CL441dsp provides you with the following OEM integration features.

  • Simple Installation: CleanSweep connects to your factory-installed system as if it were a speaker so the possibility of creating faults or diagnostic issues when the vehicle is serviced is virtually eliminated. CleanSweep's installation is fully reversible because there is no permanent modification of the factory system, and because CleanSweep is not a vehicle specific interface, it can be easily integrated into your next vehicle.
  • Existing Factory Component Compatibility: CleanSweep allows you to retain your car's interior cosmetics and the full functionality of factory-installed vehicle functions, including navigation, OnStar, steering wheel controls, climate controls, etc. You can also use CleanSweep's master volume knob/source selector switch instead of the factory volume control.
  • Auxiliary Source: With the CL441dsp, you gain the ability to add an aftermarket source of your choice (iPod, satellite radio tuner, DVD player, etc.) via direct line input, as opposed to inferior sounding FM-modulator approaches. Since these signals are free of equalization, CleanSweep will pass them without applying any correction. The master volume control knob, when pressed, selects between the factory source and the additional source unit. You can add more than one device with the addition of the optional source selector switch (136CLSES, sold separately).

Automatic Digital EQ: The CleanSweep OEM Interface with Automatic Digital EQ is a sophisticated digital audio processor that performs the following functions.

  • Audio Signal Compatibility: CleanSweep accepts virtually any analog audio signal, from low-voltage line-level to high-power, amplified speaker-level, via its four differential-balanced inputs. With totally automatic level compensation, CleanSweep then converts the two or four connected analog signals to digital audio with 24 bit effective resolution.
  • 32-Bit SHARC DSP Processor: CleanSweep applies the power of its state-of-the-art, 32-bit SHARC DSP processor to automatically equalize each of the four channels with 30 bands of equalization (120 bands total), effectively correcting the response of almost any factory-equalized, full-range signal. These digital-domain corrections will range from subtle to dramatic, depending on the degree of equalization engineered into the factory audio system. To accomplish this, you simply load the supplied CleanSweep calibration CD into the factory-installed CD player, set its volume control between 1/2 and 3/4 volume, play the designated calibration track and then press the "Calibrate" button on the top of the CleanSweep processor. Approximately 20 seconds later, the CleanSweep is finished analyzing and equalizing the factory-installed source's response and stores the corrections in non-volatile flash memory.
  • Analog-to-Digital-to-Analog Conversion: CleanSweep then converts the digitally corrected signals back to analog audio and sends them out to your aftermarket amplifiers through two pairs of low-distortion, 8 volt (RMS) line-level outputs.
  • Master Volume Control: CleanSweep includes an intuitive rotary user interface (a knob with stops at both ends) to control the master system volume at the outputs of the processor unit for both the OEM (factory) and auxiliary sources. The master volume eliminates the effects of any equalization that is dependent on the OEM volume control position and allows a high signal-to-noise ratio to be maintained in the system. When pressed, the master volume knob also selects between the OEM and Auxiliary source. A dash-mountable status LED changes color to indicate OEM or AUX input modes. These controls can be easily mounted within reach of your driver's seat. The unit features either a black or silver volume control knob to choose from to match your vehicle's interior.
  • Turn-On Control: CleanSweep can be deployed in signal-sensing mode, powering up and providing a 12-volt turn-on signal for your aftermarket equipment whenever signal is detected. It can also be activated by a conventional 12-volt trigger, if your OEM system provides one.

CL-LSA Loading Sensing Adapter: Included with the CleanSweep OEM Audio Interface is JL Audio's CL-LSA Load-Sensing Adapter. The JL Audio CL-LSA Load-Sensing Adapter is designed to present an appropriate impedance load to OEM headunit or amplifier outputs that employ "load-sensing startup protection" when used with JL Audio's CL441dsp CleanSweep OEM Audio Interface. When an OEM amplifier or headunit employs this type of protection, it checks the impedance of the connected load when the unit is powered up (expecting a speaker) and mutes its amplifier outputs if a load outside of a predicted range is detected. The CL441dsp's input impedance is outside of the range expected by some of these types of systems and can cause the OEM headunit or amplifier to mute. When the CL-LSA is inserted inline with the CleanSweep OEM Audio Interface's inputs, it presents a safe and appropriate load to your OEM component and corrects the muting behavior.

Connections/Controls/Indicators

Left Side Of Interface Module:

  • Power Connector: 4-pin connector used to connect the supplied Power Connector harness which supplies Constant +12V, Switched +12V, Remote Turn-On +12V and Chassis Ground. This Constant and Switched leads are hardwired into your vehicle's electrical system while the Ground lead is grounded to the chassis of your vehicle. The Remote Turn-On lead connects to your aftermarket amplifier.
  • Front And Rear Outputs: Four RCA-type jacks provide four-channels of analog audio output to feed your aftermarket car audio system using RCA cables (not provided).

Right Side Of Interface Module:

  • OEM Input Connector: The CL441dsp accepts up to four channels of input from your OEM audio source via this 8-pin differential balanced plug using the supplied OEM Input harness. OEM audio signals connect to this connector must be close to full-range (20-20kHz). Otherwise, you will need to connect the optional CL-SS1 (sold separately) to sum multiple filtered OEM signals to full-range.
  • Control Connector: The module features a 6-pin port used to connect the supplied wired remote volume control knob which allows you to control the system's volume as well as select between your vehicle's OEM inputs and the module auxiliary input.
  • AUX Input: The unit features a set of left/right RCA jacks for connecting an external audio source to your factory audio system via RCA cables (not supplied).
  • Signal Sense Switch: With this switch in the "On" position, it allows the CL441dsp to act as a turn-on and turn-off controller fro your aftermarket components in your system. You can also turn this feature "Off".

Top Panel Of Interface Module:

  • Aux Input Level Trim Controls: The interface is equipped with a pair of level trim potentiometers that will permit you to level-match the AUX source to the OEM level of your vehicle's audio system.
  • Calibrate Button: This button activates the calibration process of the CleanSweep Interface once you have installed the unit,  inserted the supplied Calibration Disc into your factory CD player and set the appropriate volume level and audio settings on your factory headunit.
  • EQ Defeat Button: This button defeats the unit's calibration settings to allow you to listen to the difference in your factory system with and without the digital audio processing of the CleanSweep.
  • Channel Status Indicators: The interface module features six LEDs along the top panel which indicate the status and operation of the CleanSweep unit.

Specifications

Electrical Specifications:

  • Operating Voltage: 9-16V DC
  • Standby Mode Current Draw: <2mA
  • Operating Current Draw: 0.5 A at 13.8V
  • Recommended Fuse: 1 A (Fast Blow AGC)

OEM Input Section:

  • Input Type: Differential-balanced with multi-pin jack/plug
  • Input Range: 100mV-30V RMS

AUX Input Section:

  • Input Type: Differential-balanced with dual RCA jacks
  • Input Range: 250mV-4V RMS

Digital Specifications:

  • Processor: 32 bit SHARC floating point DSP
  • Audio Resolution: 24 bit
  • EQ Bands: 120 (30 x 4 channels)
  • EQ Resolution: 1/3 octave from 25-20kHz

Output Section:

  • Output Type: Unbalanced RCA jacks
  • Maximum Output Voltage: 8V RMS (per output)
  • Output Impedance: 470 ohms
  • Signal-To-Noise-Ratio: >120 dB
  • THD: <0.01% at 20-20kHz

Our Product Research Team

At Crutchfield, you'll get detailed, accurate information that's hard to find elsewhere. That's because we have our own in-house Product Research team — they open the box, verify contents, check the owner's manual, and record dimensions, features and specs. We stay on top of new products and technologies to help people make informed choices.

JL Audio CL441dsp CleanSweep® Reviews

Average Customer Review:

14 reviews
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JL Audio CL441dsp CleanSweep®

Written By Anonymous, AL on Saturday, September 13, 2014

Tried several other products and finally got some great results with this. Amazed by the sound quality this can produce from a factory head unit.

This is in a 2014 Ford Fusion with the factory Sony/navigation system. This particular installation required the optional channel summing device to work properly.

Poor results

Written By mark, charlotte, nc on Monday, September 02, 2013

Crutchfield Customer Review (What's this?)

Installed this product on a factory OEM head unit. Not impressed at all. Sound quality is nasally and there is a crackling like distortion at high volume levels similar to a poor signal from a radio station except this was on the CD. Will need to attempt to use the preamp from the head unit at this point as this will just not work.

It is convenient yes, but it's very similar to the cd players of old that could be connected using an RF signal to your car radio. Horrible sounding. If convenience is all you care about, this product does work but if you care about sound quality, stay away...

Pros: convenient for using stock head unit

Cons: sound is nasally and at loud volumes contains audible crackling like distortion

Crutchfield response on Monday, September 02, 2013 We forwarded this review to our Technical Support team for follow-up. Lifetime tech support comes with every Crutchfield purchase.

Clean sweep

Written By Anonymous, Ashburn va on Sunday, June 02, 2013

Crutchfield Customer Review (What's this?)

Great interface for keeping stock controls. Steering wheel etc. love the remote control knob. Easy to install and match able to most interiors. Sound is very clear.

Pros: Control knob and eq defeat.

JL AUDIO CL441 DSP CLEANSWEEP

Written By n/a, providence, RI on Sunday, April 07, 2013

Install in 07 Camry with stock Radio non JBL system. Did not realize that the camry stock system was made for stock speakers, but I upgraded the front for Rockford Fosgate power component system pushing 100 rms to them and a 12" sub P2 in a sealed box for the bass pushing 250 rms. It did not sound right. Then I install the JL AUDIO CL441 DSP CLEANSWEEP and it really does work. Made all my music come alive with clarity.

Pros: Made my system sounded like a high end sound system.

Cons: u will need couple of day for the install and tuning your system if u have multiple amps installed. I wish it was just plug and play.

Much MUCH better!!

Written By Bryan G, Ashburn, VA on Thursday, October 04, 2012

Crutchfield Customer Review (What's this?)

I had some High/Low converters and didnt have great sound. I talked to a buddy of mine who is REAL installer and he recommended this product. Tore everything out, rewired and the sound was a huge improvement!! I still have a little tweaking out of my crossovers and gains on the amps to make it perfect but I smack myself for not doing this the first time. The only issue I had was that my stock stereo has that "increase volume when loud in the cabin" feature. (sorry I couldnt think of what they cal it in my car) but if I gunned it - it would throw off the calibration. I turned that feature off and so far I havent had calibration issues. The only real install problem I had was where to mount it. So I drilled a 1 inch hole in the back of my glovebox, ran the wires through and mounted it in there.

Pros: A lot better then OE sound!!

Cons: Little bulky which made mounting a pain.

Clean Sweep review

Written By Steve, El Paso, TX on Friday, July 13, 2012

Crutchfield Customer Review (What's this?)

This takes a bit of work to install, especially in my 2005 Subaru Outback. The factory radio sounded like junk. I added four Polk Audio speakers and it sounded better but still kind of flat and muddy. After installing the Clean Sweep and a 4 channel amp the factory system now sounds amazing, I can't believe the difference. I now have an aux input as well which I wanted for some time. If your car has a system that is hard to replace than I highly recommend the Clean Sweep.

Pros: Amazing sound, aux input, retains factory look

Cons: A little tough to install in my car.

very nice

Written By Anonymous, Chicago Illinois on Thursday, June 14, 2012

Crutchfield Customer Review (What's this?)

put it in a factory car it sound Great had to use the knob that it came with it claims that you don't need it but for what ever reason sounds better with it don't normally do reviews but I figure it might help somebody else recommend having a professional put it in trust me it'll save you a headache I have it hooked up to a five channel amp again it sounds great

Pros: sounds awesome make my factory radio sound great had no choice had to keep the factory radio if you are in the same boat I deathly go with it

Cons: when it's not on it makes it like a hissing noise is not that loud have to really listened. to hear it and again it's only when it's not on and who wants to have a conversation with the lady anyway haha

JL Audio CL441dsp CleanSweep®

Written By Jay, Lockport, NY on Thursday, February 10, 2011

Crutchfield Customer Review (What's this?)

Works good, Installed in my 2011 Subaru STI Limited with Navigation for a clean signal to a Boston 475 amp that powers 600C Alpine speakers. I set it up with the master volume knob then disconnected it and use to stereo volume. So far I'm happy with it.

not if you have steering wheel controls

Written By JJK, McKinney TX on Friday, November 19, 2010

To get the best performance out of the unit you must use the master control volume which comes with the unit, though the instructions say its not required. With that being said I tried running the system without the MCV hooked up and it sounds horrible. I called JL and they explained that the system must be calibrated with the MCV installed but you can remove it after the set up. The problem is the system is continually trying to correct the sound, which seems impossible. Long(and frustrating) story short, if you want to drill a hole in your dash and use the MCV without steering wheel controls I'm sure it works as advertised. If I knew then what I know now, I would have never bought this product.

Fixed all the flaws

Written By Chris, Northern California on Tuesday, October 05, 2010

Crutchfield Customer Review (What's this?)

After getting set up with a sweet amp and speakers from crutchfield, my '01 landcruiser still didn't really sound right and had a few rough edges. It had the NAV system so I couldn't replace the head unit and without cleansweep was advised to use the factory amp to drive the new Infinity kappa 5 amp speaker level inputs. Without Cleansweep, I had the following problems: terrible sounding factory eq settings that changed radically as a function of volume, a subtle but very un-pro popping noise on power up and power down, trying to strike a compromise in amp sensitivity: too low and lots of electronic hiss, too high and the amp would get overdriven and cut out at louder levels-there was no just right. But GREAT NEWS! I was able to replace the factory amp with Cleansweep (it accepted the very low level factory head unit signals with common gound). Cleansweep perfectly fixed each and every one of these problems and also gave me a clean aux input for analog ipod. System now sounds stunning, both quiet acoustic-vocals with my wife and cranking pop-rap with the kids! :D

JL Audio CL441dsp CleanSweep®

Written By Daniel, Corona, NY on Monday, May 26, 2008

I installed the CleanSweep after running out of options for my 2001 Saab Viggen. There were no aftermarket stereos for my car and no way to use my Ipod except for an FM connection which sounded lousy. I thought the Cleansweep could be the answer, but I wasn't sure. Since I had nothing to lose with Crutchfield, I bought one they had for $254 from their Scratch & Dent. You see, I hate to spend more than I need to, and I don't believe you necessarily get better sound from expensive equipment. With that philosophy in mind, I ordered the most inexpensive, good quality gear I could find which happened to be Kenwood speakers including one 12" sub with the Q-Logic enclosure that costs only $59. I paired the speakers with 2 Profile amps. One 4- channel and one 1-channel
TOTAL: $574
I have to tell you, at the end of the install before I inserted the calibration CD, I wasn't sure it would work, but it did, and boy, did I get awesome sound from this setup!
Could I have spent more? Sure. Would I have gotten better sound? Hard to believe. I'd say like the Master Card commercial, Cleansweep? Priceless!
Thank you, Cleansweep, and thanks again Crutchfield!

The final piece of the puzzle

Written By shlockwave, Los Angeles, CA on Saturday, May 10, 2008

Crutchfield Customer Review (What's this?)

Since I finally got rid of my old '90 Volvo, it has been an ongoing project to get the stereo just right in the new car. First I replaced the factory speakers with some nice Rockford Fosgates. Instant improvement. But then I wanted more. I put in an amp. And if you get an amp, you might as well get a subwoofer, right? Well, everything was fine but I always felt that 'perfect sound' was just out of reach. Now everything sounds fantastic and crystal clear. I'm hearing things I would normally only be able to hear when I'm blasting my iPod in my Sennheiser headphones. I initially put off getting a sound processor because of the price tag but it was definitely money well spent.

JL Audio CL441dsp CleanSweep®

Written By matthew, fredericksburg va on Monday, May 05, 2008

Crutchfield Customer Review (What's this?)

This unit looks cool and all but it is hard too get all four channels to
calibrate I would recomend professional installation or a degree in
electrontics. No kidding.Crutchfield was great in taking this unit back for
me.What a great company to do bussiness with...

JL Audio CL441dsp

Written By Bginvestor, Tucson, Az on Wednesday, December 05, 2007

Crutchfield Customer Review (What's this?)

For OEM integration, this unit is terrific..

Sound quality is outstanding and am very happy. I can adjust the gains for the Aux channel. My satelite radio and Ipod sound as good as the CD player!

One item that you need to be aware of: If your radio signal doesn't have a bandwidth from 20-20kHz, you will need the channel summing device that they sell separately. Fortunately, my unit calibrated fine.

I also have the Rockford 3sixty.1 which is a good product as well, but the volume control has a known problem (at low levels, the volume jumps up and down sometimes). The 3sixty.1 doesn't have level adjustments for Aux channel.

Overall, the JL is better for quality, but doesn't have as many features as the 3sixty.1.

Product reviews from the Crutchfield Labs

Video: JL Audio CleanSweep®
by Robert Ferency-Viars, Ken Nail

Crutchfield's experts take a look at the JL Audio CleanSweep sound processor.

What are the Labs?

Get everything you’ll need to enjoy your new JL Audio CL441dsp CleanSweep®

Superior patch cables help deliver pristine sound from your new processor to your amplifier.
Add a remote and control your subwoofer amp or second zone from the driver's seat.
Allow some vehicles' special audio configurations to work with your new sound processor.
You may need some extra speaker wire to connect your existing wire to your new processor.
Save money by doing the installation yourself. The right tools will help.
T-Spec 2-Channel RCA Patch Cables

T-Spec 2-Channel RCA Patch Cables

Available in 7 different lengths (20-foot)

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T-Spec 4-Channel RCA Patch Cable

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EFX 17-foot RCA Patch Cable

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EFX 2-Channel RCA Patch Cables

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EFX 2-Channel RCA Patch Cables

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EFX 2-Channel RCA Patch Cables

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Elite Series Braided Multi-Core RCA patch cables — available in 5 different lengths (25-foot)

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JL Audio CL-RLC

JL Audio CL-RLC

Remote level control and line driver

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(8)

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JL Audio CL-LSA

JL Audio CL-LSA

CleanSweep load sensing turn-on trigger

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T-Spec 16-gauge Speaker Wire

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Stinger PRO Series Speaker Wire

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Metra Crimp Tool and Connectors

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Cuts and strips 12- to 22-gauge wire

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S&G Tool Aid 87650

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Skewdriver Pro SPK4042

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Install Bay IB35400

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Install Bay 3320

Install Bay 3320

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Posi-Products™ Car Stereo Connectors

Posi-Products™ Car Stereo Connectors

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Metra Crimp Caps

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Package contains 100 crimp caps — for 14- to 16-gauge wire

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Questions & Answers Ask the community. Share your knowledge.

2 questions already asked

The unit has a function that eliminates the stock equalizer settings in your factory system. So installing a set of subwoofers is as easy as running from the rear preouts. The JL unit allows you to tune each line individually through the amplifiers without the interruption of the factory radio settings. [ ALEX  Jan 29, 2014 ]
You need to use a five channel amp that has a subwoofer output such as the JL700/5. It automatically creates the sub channel (with adjustable cutoff freq and gain) - two or four inputs (F/R) and six outputs (F/R/S) depending on how you configure it. [ ANDREW  Jan 28, 2014 ]
Gary - In order for you to add a subwoofer through the CleanSweep, you will need to split the signal from the rear channel. Crutchfield carries an RCA Y-Adapter that will do the trick - - you will need 2 to make it work. Split the left and right rear outputs using the Y-adapters, and how you have an extra set of outs for the sub. If you are going to retain the factory head, and the head does not have it's own pre-outs, this is the best and only way to run a sub using the CleanSweep. The sound is ok if you tune the sub appropriately, but you are splitting a channel vs. having a dedicated channel out to the sub. I opted to return the CleanSweep and purchased a head unit that gave me dedicated RCA outs built in. Cleaner install and better sound, but significantly more $$. [ ROBERT  Jan 28, 2014 ]
When shopping for a 5 channel amp, purchase one that is supplied with or you have the option to buy an optional subwoofer level controller that would be installed in the dash. As far as the 4 channels of pre-amp output being compatible with a 5 channel amp, most amps have a selector switch on the side if the amp that enables you to have the signal from the front and rear channels to feed the subwoofer input channels. [ JOHN  Jan 28, 2014 ]
You will have to buy the JL Audio CL-RLC Remote Level Control. This will split the rear channel of the Cleansweep into two channels. One channel will be a pass through and the other channel will have a volume control. Hook the sub RCA into the volume control so it will control subwoofer level only and use the pass through for the rear speakers. [ CLINTON D  Jan 28, 2014 ]

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