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Revolutionary, DSP-based “smart” interface makes almost any vehicle suitable for high-end, aftermarket car audio.
JL Audio's product development team embarked on a two-year project to develop CleanSweep™ —an innovative, patent-pending solution that permits almost any factory supplied integrated OEM audio system to serve as the source for a high-performance aftermarket sound system.
A huge number of OEM head units now incorporate non-defeatable equalization curve, aimed at correcting the response of factory speakers.
With CleanSweep™, installers can take the audio outputs from almost any OEM head unit or amplifier, level-match and correct the frequency response, and deliver high-quality signals for aftermarket audio equipment. This makes virtually any vehicle a candidate for high-end sound (without costly fabrication, integration or radical surgery to the dashboard).
CleanSweep™, quite simply, enables high-end, aftermarket audio to work with modern vehicle systems, without causing problems and without accepting compromised audio quality… It really is a powerful solution
What exactly does CleanSweep™ do?
1) About the size of a paperback book, CleanSweep™ accepts virtually any audio signal, from low-voltage line-level to high-power amplified speaker-level, via its four differential-balanced inputs, precisely integrating stereo or stereo-front/rear signals with totally automatic level compensation.
2) CleanSweep™ internally converts the two or four connected analogue signals to digital audio with 24 bit effective resolution.
3) CleanSweep™ applies the power of its on-board, state-of-the-art 32-bit SHARC® DSP processor to automatically equalize each of the four channels with 30 bands of equalization (that's 120 bands total), effectively correcting the response of almost any OEM-equalized full-range signal. To accomplish this complex feat, the installer simply loads the supplied CleanSweep™ calibration CD into the OEM CD player, plays the designated calibration track and then presses the "Calibrate" button on the top of the hideaway CleanSweep™ component. Approximately 20 seconds later, the CleanSweep™ is finished analyzing and equalizing the OEM source's response.
4) CleanSweep™ then converts the digitally corrected signals back to analog audio and sends them out through two pairs of low-distortion 8-volt (RMS) line level outputs.
5) CleanSweep™ also integrates a stereo auxiliary input circuit for adding an additional stereo source such as DVD, MP3 player, aftermarket source unit, or any other audio source to the system.
6) CleanSweep™ includes a good-old-fashioned knob with stops at both ends to control the master system volume for both the OEM and auxiliary sources. The master volume eliminates the effects of any OEM 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 small controls can be easily mounted in the cockpit.
7) CleanSweep™ can be deployed in signal-sensing mode, powering up and providing a 12-volt turn-on signal for aftermarket equipment whenever signal is detected; or a conventional 12-volt trigger can activate it if the OEM system provides one.
With CleanSweep™ installed, the vehicle owner can enjoy clean, high-end sound and an additional, aftermarket audio source, while avoiding messy OEM diagnostic problems. CleanSweep™ allows for quick and simple restoration of the original OEM system setup, allowing it to be moved to another vehicle when a lease expires or the vehicle is sold. Most importantly, it gives newer vehicle owners the freedom to upgrade their audio systems with high-quality aftermarket gear, without fear of damaging complex automotive systems.
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