Alpine KTE-12G.3
Grille for Alpine R2-W12D4 and R2-W12D2 12" subwoofers
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Alpine KTE-12G.3 12-Inch Subwoofer Mesh Grille
Product overview:
The Alpine KTE-12G.3 is a premium 12-inch protective grille designed to shield your high-output subwoofers from damage. Specifically engineered for Alpine’s R-Series and S-Series subwoofers, this heavy-duty metal mesh cover is a must-have for trunk-mounted setups where shifting cargo, groceries, or gear could puncture a speaker cone. With its sleek matte black finish and integrated Alpine logo, it provides a clean, professional "factory-plus" look while ensuring your audio investment remains safe.
Features
Seamless Connectivity
The KTE-12G.3 features Alpine’s proprietary "EZ Change" twist-lock mounting system, which makes installation remarkably simple. It doesn't require extra screws or drilling into your enclosure; instead, it mounts directly under the subwoofer's existing trim ring. This specialized fit ensures that the grille stays perfectly centered and vibration-free, even during the most intense bass sessions.
Safety & Convenience
Built for the active vehicle owner, this grille acts as a rugged physical barrier against the everyday hazards of a cargo area. The powder-coated steel mesh is strong enough to deflect significant impacts without bending. By adding only about 1 inch to the mounting height, it remains low-profile enough to fit in most tight spaces while providing peace of mind that your subwoofer's surround and cone are protected from tears and dents.
Enhanced Audio & Ambiance
While it is built for toughness, the KTE-12G.3 is completely acoustically transparent. The mesh pattern allows for maximum airflow and zero sonic distortion, ensuring your 12-inch sub can still move the air it needs to hit those deep frequencies. Visually, the matte black powder-coat finish creates a refined, stealthy ambiance in your trunk, replacing an exposed woofer with a finished, high-tech aesthetic.
Fine Tune Your Sound
This grille is optimized for a "perfect fit" with the latest generations of Alpine's 12-inch drivers. Because it uses the factory trim ring for mounting, it eliminates the rattling or "buzzing" common with universal, screw-down grilles. This allows you to "fine-tune" your focus on the bass performance itself, knowing your hardware is secured behind a professional-grade shield that looks as good as it performs.
Full Specs:
| Category | Specification |
| General | |
| Color | Matte Black with Alpine Logo Badge |
| Material | Powder-Coated Steel Mesh |
| Compatible Speaker Size | 12" |
| Compatibility | Alpine R2-W12D2, R2-W12D4, S2-W12D2, S2-W12D4 |
| Mounting System | EZ Change Twist-Lock (Under Trim Ring) |
| Mounting Height Increase | Approximately 1" |
| Weight | 1.9 lbs |
| Warranty Information | |
| Parts/Labor Warranty | 1 Year Limited |
What Others Are Saying
Eddie was great - SDCS installed a new head unit in my 2019 4Runner. He was honest in his opinions regarding the options I was considering. Pricing was also good - he was able to reuse some of my existing installation kit so I saved a bit of $$.Installation was clean and fast and he took the time to walk through the features before I left. Highly recommend!!
I had a great time at this shop! The staff really knows their stuff and took the time to explain the different options without pressure. Installation was quick, clean and professional. Everything looks factory and sounds amazing. The prices were fair and customer service was above and beyond. I highly recommend this place if you're looking for quality car audio and excellent service.
Those guys are really professional! I had a new Alpine floating head unit installed in my 2008 Mercedes, and it feels like a brand-new car. The installation was super clean. At first, the sound wasn’t the same as the factory stereo, but Kevin tuned it to be just as good—if not better—without adding any new amps. They even used my factory GPS antenna so I don’t have extra wires hanging out. On top of that, they matched the online price. Big thanks to Kevin and Eddie—highly recommended!
Kevin was awesome, he took his time and explained everything to me. I went in initially for a dash cam install and then decided to get a sub and amp installed as well. Both turned out great and will be returning if I need more work done.
Came In not knowing what to expect when suddenly my stereo stopped working. Spoke with Kevin in the front and after a VERY fast diagnosing they discovered my wiring was incorrect. After only about 45 minutes total being in the store I was on my way to the beach with a working stereo again! Thank you so much SDCARSTEREO
Highly recommend Kevin and the team at San Diego Car Stereo for any issues with aftermarket stereos. I bought a car with an aftermarket stereo and AC unit that wasn’t working properly—specifically, the heat wasn’t functioning due to an improper setup. I had several people look at it with no luck, and even the dealership basically refused to help because it was an aftermarket install. I came to Kevin and his team over the holidays feeling pretty defeated, but he was confident he could get the heat working before I headed back to a Colorado winter. Sure enough, he got it done.
FAQ
Do products purchased from San Diego Car Stereo come with a warranty?
Yes, all products come with a 1-year manufacturer warranty unless otherwise stated. This covers any defects excluding physical damage.
Are these products brand new?
Yes, every product we sell is 100% brand new, unused, and comes in original manufacturer packaging unless clearly marked otherwise.
Do you offer installation services?
Yes, we offer professional installation services at both of our San Diego Car Stereo locations. Our expert technicians have over 50 years of combined experience to install all of your car, marine, or offroad audio needs. Stop by or give us a call to schedule an appointment to get a quote in person.