Alpine PSS-23WRA2 Motorcycle Speakers Alpine has eliminated the pain

Alpine has eliminated the pain and confusion that usually goes along with trying to tune your system's sound using a digital signal processor or DSP/amplifier by making an amplifier that tunes itself

and its EZ Change twist-lock grille system gives you speaker protection options to coordinate with your truck's interior

and a PWE-S8 8" powered subwoofer

Brightness Control: You can adjust the brightness of the LCD backlight from -15 to +15 and the brightness of the button illumination from -2 to +2

2012 Punch P3 Shallow Subwoofers - owner's manual

Alpine PSS-23WRA2 Motorcycle Speakers Alpine has eliminated the painAbout the Alpine PSS 23WRA2 Your Jeep JL can sound as good as it looks Your Jeep Wrangler Unlimited JL is adventure central. It goes everywhere you ask of it, but I've gotta ask does it sound as good as it could? Alpine has a solution with the Restyle PSS 23WRA2 audio upgrade package. It'll add the audio performance that's missing in your Jeep's factory system. What you'll get When the top is down and the wind's blowing, you can lose more than just