It can be done! (Alpine premium sub upgrade)

[Camaroboi13]

Does the audio control LC2i boost the low frequencies back that are tuned out by the factory amp? I figured you'd need an actual DSP to start with a neutered signal and get good lows?

Short answer, yes.

The LC2i, is a compact, two-channel processor with active input circuitry, which allows it to accept speaker-level signals of up to 400 watts per channel from factory-installed source units or amplifiers. It converts them to high-quality pre-amp signals that can then be directed to after-market processors and/or amplifiers. Users can enjoy maximum sound quality while maintaining the use of factory volume and steering wheel controls.
features

• Two channels of Active speaker level inputs – Accept 400 watt signals per channel
• Fixed and variable outputs with discrete level controls
• AccuBASS® processing for correction of bass roll-off
• GTOTM Signal Sensing
• Input For Optional Remote Level Control
• Compact design

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[Camaroboi13]

Also, for those wondering, the LC2i can also bet setup to turn the amp on via its own remote power wire so that you don’t have to find a 12v ignition source for your remote. I don’t remember if that’s only on the LC2i Pro or if it’s on the standard one as well. You’ll have to do some research on that. I can’t remember which model I have, I purchased it back in 2017 for a different vehicle and used it for the JT

 

[93civej1]

Interesting so I can probably use a JL audio LOC22

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