Boss Audio MR1308UAB Single-DIN Marine Weatherproof USB/SD MP3/AUX AM/FM Radio Stereo Digital Media Receiver W/Radio Cover, 2x 5.25" 150W Max Power Weather Proof 2-Way Coaxial Black Boat Speakers

This Boss Audio receiver system is Weather Proof and pushes out 50 Watts x 4 Max Power. This system features Balance/Fader/Bass/Treble and Preset built-in EQ, ensuring impressive sound. Compatible with Audio out from Smart Phones and MP3 Players. The receiver has a Detachable Front Panel and includes a Wireless Remote. Bluetooth Hands Free, Make and receive calls, Bluetooth Audio Streaming. Play and control music and apps like Spotify/Pandora wirelessly.

General Features:

• MP3 THROUGH: Bluetooth/USB/SD
• Bluetooth Audio Streaming
• Bluetooth Supported Profiles: A2DP, AVRCP, HFP
• Bluetooth Hands Free
• Front Panel USB/AUX Input
• SD Port
• Pre-Amp Outputs
• Total Power Output: 50 Watts x 4 Ch
• Last Position Memory
• Wireless Remote Control
• Auto Memory Search
• ID3 Tag
• Single DIN Chassis
• 18FM/12AM Presets
• Selectable Preset EQ
• Clock Display
• Detachable Front Panel
• Weatherproof
• Front Panel UV Coating
• PC Board with Conformal Coating

Voice Coil – Aluminum

One of the most abundant elements on earth, Aluminum is remarkable for its low density and for its ability to resist corrosion. It is nonmagnetic (does not have any magnetic properties) and does not easily ignite. This solid material has the ability to perform under stress in both high tension and high compression environments. Aluminum is relatively soft making one of the more ideal materials to use in voice coils.

Cone – Poly Injection

A substance called "Polyurethane" and is categorized as a "Polymer". It is a resilient, flexible and durable manufactured material that can take the place of paint, cotton, rubber, metal or wood in thousands of applications across virtually all fields. It can be hard like fiberglass, squishy like upholstery foam, protective like varnish, bouncy like rubber or sticky like glue. In the specific case of our cones, this material allows for maximum flexibility that produces great sounding speakers lasting you a long, long time. 

Surround – Rubber

Rubber is a synthetic (man made) rubber and is valued for its chemical inertness, impermeability to air and the ability to endure or resist exposure to the many types of weather fronts. Rubber has many different applications. Anywhere from Sports equipment to automotive parts, the medical industry and more. We use them for the Surrounds that connect the cone to the basket. Did you know that most modern chewing gum uses food-grade rubber as the central gum base, which contributes not only the gum's elasticity but an obstinate, sticky quality? Just like that chewing gum, the Rubber Surround in our speakers can take the equivalent amount of abuse without quitting on you. Tweeter – Mylar: For a modern edge, the best car speaker could be the high tech Mylar tweeter, as it generally has more ability for a wider variance of sound modifications and channel handling. Unlike paper cones, the Mylar has a higher rate of durability, as the cone is made of a plastic poly material, which does not rip or tare easily, under abnormal frequency changes.

Boss Marine Loudspeakers are designed to withstand the harsh conditions of
the marine environment. All frame and grill sections are made of a polymer
composite that is completely waterproof with a coating to protect against
damage from UV rays. We use rubber surrounds and polypropylene cones to complete the waterproof package. The tinsel leads are coated to prevent
corrosion. In addition to the material engineering qualities and we are
proud to say these speakers sound awesome.

Speaker Features:

• Power Handling Peak 150W
• Magnet Structure 30 Oz
• Impedance 4 OHM
• Frequency Response 120HZ-18KHZ
• Spl 1 watt/1 meter 90dB
• Cone Material Poly Injection
• Voice Coil 3/4 Aluminum
• Tweeter 1 Mylar Dome
• Grilles Plastic