Marine radio designs and features have come a long way. Years ago, when Clarion introduced the first marine radios to the world, they were enhanced versions of Clarion’s car stereo solutions. Soon after, water-resistant faces were added to allow the radios to stay outside in the cockpit all year long. Over the next few decades, remote controls were added to make controlling the radio from anywhere onboard easier. In the last decade, marine source shapes have become flexible, and the source selection options are downright impressive.

Marine Radio Size Options

Most marine radios started as single-DIN car radios. The standard 2-inch-tall by 7-inch-wide chassis was outfitted with a front panel with silver or white trim. The displays were upgraded from their car audio brethren with reverse-LCD displays that were easier to see in bright sunlight. Inside these radios, the circuit boards were sprayed with a plastic layer called a conformal coating. This barrier helped keep the tiny connections on electronic components from corroding in high-humidity conditions.

Companies like Kenwood, Sony, Clarion, Fusion and Aquatic AV offered radios with an oversized front panel that was water-resistant. The large face mounted securely to the boat, and a flip-down design provided access to the cassette (remember those?) or CD slot. Over the years, these radios evolved into digital-media-only designs. Fusion had radios with room for an iPod inside the unit. The latest radios no longer have flip-down faces as many boat owners play music stored on their smartphone via a Bluetooth audio streaming connection.

Two-piece radios grew in popularity around 2010. These radios featured a hideaway control box that was suspiciously similar in size to a standard single-DIN radio, then a compact control module that was roughly 4 by 6 inches. The controller had the benefit of not requiring any significant amount of mounting depth, other than for its control cable. Currently, the most popular of these are available from JL Audio, Rockford Fosgate, Kicker and Fusion.

The final evolution was the gauge-sized radio. Many companies, including JBL, Hertz, Aquatic AV, Dual and Kicker, offer a compact radio that will fit into the same opening as a 3-inch dash gauge like a tachometer.

Modern Marine Integration Options

As the popularity of multifunction displays (MFD) from companies like Raymarine, Lowrance and Garmin has increased, radio manufacturers have developed integration solutions to let these navigation devices communicate. Clarion offers the MW6 interface that provides basic NMEA 2000 connectivity with a host of MFDs. JL Audio’s MM80-HR hideaway marine source unit works with Simrad, Lowrance and B&G MFDs and features a four-channel, 30-watt-per-channel amplifier. Rockford Fosgate also has a black-box NMEA 2000 radio called the PMX-8BB that works with its PMX-CAN interface to communicate with many Garmin and Raymarine MFDs.

Fusion’s Apollo Series radios have a Wi-Fi radio built in and allow iPhone and iPad users to stream audio using Apple AirPlay 2. Fusion says this wireless communication protocol offers a dramatic improvement over Bluetooth.

Upgrade Your Marine Radio Today

Whether you need to replace an older, water-damaged or worn-out CD player, or you want state-of-the-art connectivity and control, upgrading the radio in your boat is a great idea. Drop by your local specialty mobile enhancement retailer today to find out about the options available to make your time on the water more enjoyable and entertaining.

This article is written and produced by the team at www.BestCarAudio.com. Reproduction or use of any kind is prohibited without the express written permission of 1sixty8 media.

Upgrading the stereo system on your boat with new speakers, high-power amplifiers and subwoofers is a great way to make a day on the water a lot more fun. Just be aware that the behind-the-scenes work involved in these installations can take more time and is a lot more complicated than the equivalent work on upgrading a car or truck. Let’s look at a few reasons why marine entertainment system upgrades cost a little more.

Marine-Grade Wiring Ensures Reliability

Depending on whether your boat is used in fresh- or saltwater, marine-grade wiring is either a good idea or an absolute necessity. High humidity levels associated with boats and personal watercraft can accelerate the corrosion process and cause electrical connections to amplifiers, batteries, speakers and source units to fail. Taking precautions like coating connections with dielectric silicone and adhesive-lined heat-shrink tubing can help a lot.

What works even better is for the installer to use dedicated marine-grade cables and wiring. Companies like JL Audio, T-Spec and Stinger offer power cable that includes tinning — a thin coating of tin — on top of each copper strand. This coating helps to prevent corrosion so your sound system will play reliably for years and years.

Running Wires Takes Time

If an installer has to run a power wire, speaker cable or interconnect to the trunk of a car or truck, they can typically lift the door sill trim panels, raise the carpet and lay the cables in place. Depending on the application, this can be much more difficult in a boat, especially a sailboat. Often, the factory wire harness on a boat runs through dedicated cable channels, but without access, so adding new wiring can be time-consuming. The process may involve removing storage cabinets or upholstery to execute correctly.

If you are planning to add speakers to a wakeboard tower, you’ll want the cables to run inside the tubes for a clean look. Once again, this process takes time. Holes have to be drilled, a wire fish run through the tubing, then the wires pulled afterward. Proper grommets on access holes are paramount to ensuring the system functions reliably. Since most people want to listen to their tower speakers at high volumes, the wire should be relatively large — 14 gauge as opposed to 16 or 18. This added bulk adds further complexity to the install time.

Ignition-Protected Devices are Mandatory

If your battery bank or electronics share space with your engine or fuel cell, it is mandatory to use American Yacht and Boat Council (ABYC) E-11 or SAE J1171 Ignition-Protected devices. For example, circuit breakers, battery disconnects and any electronics must be designed in a way so they will not ignite a combustible air/fuel mixture. Stinger and T-Spec offer circuit breakers that are compliant. Several companies also offer source units and remote controls that feature Ignition-Protected designs. There have been many cases of explosions due to electronics igniting fuel vapors in the hull or engine compartment of a boat.

Corrosion-Resistant Fasteners and Water-Resistant Materials

In a car or truck, an installer can create an amp rack or subwoofer enclosure in the spare tire well or behind a seat out of plywood or MDF. The wet conditions of a boat will cause these woods to swell up, deform and fail. Materials like PVC or ABS plastic are commonly used for amplifier mounting panels. Speaker spacers are often cut out of acrylic plastic. Dedicated marine-grade materials like King StarBoard high-density polyethylene (HDPE) have built-in UV protection to ensure they won’t chalk, fade or turn yellow over time. These plastics cost significantly more than wood, adding to the cost of installation.

When it comes to mounting equipment, especially speakers that are directly exposed to water from splashes and rain, corrosion-resistant stainless-steel fasteners are a must. Again, these fasteners cost a little more than their black oxide or zinc-coated brethren. In the long run, preventing rust and streaks of brown running down your hull makes this upgrade a worthwhile investment.

Professional Marine Electronics Installation Ensures Reliability

Before you ask a friend who’s an electrician or a cousin who used to install car stereos in the ’90s to work on your boat, ensure they have the tools, training and materials to ensure the installation, integration and configuration will result in an audio system that’s enjoyable and reliable. In the same way you’d search for the best painter to create a family portrait, be sure to choose an expert to upgrade the electronics and entertainment systems on your boat.

This article is written and produced by the team at www.BestCarAudio.com. Reproduction or use of any kind is prohibited without the express written permission of 1sixty8 media.

If you own a boat, you know how great it is to hang out on it with your friends in the evenings and on weekends. Enjoying great conversation, good food and awesome music is the perfect recipe for fun and relaxation. When it comes to designing and installing a marine audio system on a boat, there are some specific product requirements that will help ensure it lasts for years and always sounds great. Let’s take a look at a few.

Water Damage

Imagine the cockpit of a bow-rider or wakeboard boat. If you were to install a conventional car audio CD player in the dash and get it wet, it would stop working. Maybe not right away, but all the exposed internal components that are not protected against corrosion will fail eventually. The same goes for speakers. Car audio speakers can handle a few drops of water now and then, but being rained on or splashed a lot will do them in.

Water-resistant source units are built with control panels that seal themselves when closed. They include rubber gaskets to ensure water won’t get into the back of the radio, and the buttons and controls can withstand whatever Mother Nature throws their way. Look for an Ingress Protection (IP) rating of IP66 or higher. The first number in the rating describes the dust protection capabilities, and the second describes moisture protection. An IP rating of 66 means it is fully protected against dust and against water being sprayed by high-power jets. Specifically, level 6 jets spray 100 liters (26.4 gallons) of water per minute at a pressure of 100 kPA (14.5 psi), at a distance of 3 meters (9.85 feet) for a total of 3 minutes. No water can get into the device during the test.

While direct exposure to water is a problem, so is exposure to dampness and humidity. Thankfully, companies that design source units designed for a marine application coat their circuit boards with a non-conductive water resistant coating. This is referred to as conformal coating. It prevents moisture from corroding component connections inside the radio.

A genuine marine speaker is designed in the same way. These speakers include a rubber gasket on the mounting surface to seal them to the boat. For a coaxial speaker, there must be a secondary gasket at the base of the woofer cone to prevent water from getting into the speaker’s motor assembly. Without this seal, the top plate and T-yoke of the speaker will corrode. Good-quality marine speakers often include drainage channels to let water out from the behind the grille and include provisions for allowing wiring to be secured to the speaker. This prevents speaker wires from being pulled off when objects like life jackets or fishing rods are being pulled out of storage lockers.

UV Exposure

The second challenge is the sun. Almost every boat sits outside in the hot sun all summer. The sun will dry out plastics and fiberglass resins that are not designed specifically to handle harsh UV rays. The materials can fade, turn yellow, crack, turn chalky or simply dissolve. The UV rays cause the microscopic carbon bonds within the plastics to fail at an atomic level, causing free radicals. Once these free radicals (which are highly reactive molecules) are exposed to oxygen in the air, the material starts to fail. Quality marine audio products are made from plastics like Centrex 814 and similar materials that are designed to withstand UV exposure.

Marine manufacturers often specific industry-standard testing procedures such as ASTM D4329. This test puts products in intense UV exposure situations to verify material stability.

Ignition Protection

The American Boat and Yacht Council (ABYC) has a set of guidelines for the installation of electrical and electronic equipment on boats. While the ABYC guidelines are written for boat manufacturers, they are good practice for anyone who works on boats. Of interest to the installation of marine audio products is the requirement to use of ignition-protected equipment.

Ignition protection-rated devices were designed for use in environments where there are fuel vapors, such as the engine compartment of your boat. In these applications, the devices cannot produce any spark or another form of ignition of flammable substances during normal operation. Manufacturers of compliant products have their products tested in a chamber filled with a flammable air/fuel mixture. The device is operated and cycled through its functions repeatedly to ensure that it is safe. The best part of the test is the conclusion: To confirm the validity of the test, a spark is created inside the test chamber to ignite the fuel. Yes, they blow up the product under test. I know – cool, eh? Devices such as remote controls and circuit overload protection devices (fuses, circuit breakers, etc.) should be ignition protected. Why risk the alternative?

Connectivity

Marine source unit manufacturers put a great deal of effort into their source unit accessories, from simple wired remote controls to units with color LCD displays and wireless units. There are hand-held Infrared and Radio Frequency Remotes, remotes with extra features and outputs to control other functions on your boat (hatch covers, lights, etc.), and even remotes that will let you use your iPod or iPhone to control your radio and see what is playing. These features are not typically found on common “car audio” units.

Salt Exposure

If your boat is going to be operated near saltwater, fear not. Marine entertainment product manufacturers test for reliability under extremely salty conditions as well. In fact, most manufacturers of marine audio products do extensive salt spray and thermal testing, along with the UV and water ingress tests. Look for ASTM B117 Salt Fog Exposure testing on the products you are interested in using.

It’s no secret that marine audio products cost a little more than similar car audio products. You are making an investment in their reliability. The last thing you want is to sail out on the first day of a long weekend and have your system not work. With quality marine audio products on board and a professional installation, you will always be entertained.

This article is written and produced by the team at www.BestCarAudio.com. Reproduction or use of any kind is prohibited without the express written permission of 1sixty8 media.