Price $85
Designed for easy installation, this mounting adapter plate enables you to seamlessly integrate a JL Audio MediaMaster MM50 or MMR-40 receiver into a marine radio opening that was previously larger. Crafted from a solid piece of marine-grade, machined aluminum, it features a durable black anodized finish that provides resistance against UV rays and corrosion. Included with the plate are stainless-steel hardware and a comprehensive full-surface gasket, guaranteeing a secure and watertight fit during installation. The countersunk mounting holes are cleverly concealed behind your MediaMaster's trim ring, resulting in a sleek and professional-looking setup.


  • mount a JL Audio MediaMaster in larger openings
  • designed for JL Audio MediaMaster® MM50 and MMR-40 marine receivers
  • made from marine-grade, machined aluminum
  • fits openings up to 8.17″ x 3″ (208 mm x 80 mm)
  • black anodized finish resists UV rays and corrosion
  • comes with stainless-steel hardware and a full-surface gasket
  • countersunk mounting holes for a smooth installation

What Our Customers Are Saying...

Delbert D. Walls Jr.
Nothing but good things to say about this location! I've brought multiple vehicles here, old and new, for different services and Thom has always got me together! Highly recommended!
Mark Waddle
Great service and good price’s. Looks like it was factory installed and sounds great
Drew Rose
Brian and Tom are awesome! The installers here are amazing as well. Don’t forget to tip your installer
Denise Varitek
Very satisfied with the blind side alert system installed on my car. Staff was very professional and knowledgeable.
Wesley Kasperski
They are the best in the business!
Darin Lauer
This was the 7th vehicle I’ve taken to CarTunes in Allen Park for window tint. As with the other six… they did a great job again! Quality work, great price, friendly people.
Mark Counsel
They built me a custom sounds system from top to bottom and explained to me about what to expect from my system. All of the staff was very helpful.