Marine Audio

Contrary to how some marine audio amplifier manufacturers approach the design of their products, an amplifier designed for a boat isn’t just painted a different color. From coatings on the circuit board and the finish on the heatsink to the materials chosen for the electrical connections, a marine amp needs to be designed from the ground up for reliability. In this spotlight, we’ll look at what makes the Rockford Fosgate PM400X4 a perfect solution for your marine audio application.

Specifications of the Rockford Fosgate PM400X4

The PM400X4 is a four-channel amplifier rated to produce 50 watts of power into four 4-ohm loads and 100 watts into 2-ohm loads. Each pair of channels can be bridged to provide 200 watts of power into two 4-ohm loads. The bridged configuration would be ideal for a pair of subwoofers or wakeboard tower enclosures, such as the 10-inch Rockford Fosgate M2WL-10H.

Performance-wise, Rockford Fosgate rates the amp as having a bandwidth of 20 Hz to 20 kHz with a tolerance of 1 dB. Most companies use a 3 dB rating. This is a Class A/B amplifier, so you know the frequency response with real dynamic loads is going to be ruler-flat to well beyond where humans can hear. Distortion is specified as less than 1%. We know from our testing that these amplifiers are capable of better than 0.02%, putting them in line with the cream of the crop.

Design Features

The PM400X4 is based on a cast aluminum heatsink that measures 11.03 by 7.76 inches and stands 2.38 inches tall. The heatsink is finished in a light grey powder coat that’s not only durable but also resistant to fading under prolonged UV exposure.

Speaker, signal, and power connections are made along the front edge of the amp. Terminal blocks with set screws accessible from the top of the amp ensure secure and reliable connections for up to 4-AWG power and ground wires and 8-AWG speaker connections. The terminal blocks use stainless steel hardware to prevent corrosion. The amp has four RCA input jacks that are slightly recessed into the front panel.

Signal Processing and Controls

As you can see from the photos, there’s a removable panel on top of the amp that provides access to the controls. Each pair of channels has a sensitivity control that’s adjustable from 150 millivolts to an impressive 12 volts. The RCA input jacks have a balanced differential circuit design. Not only does this help eliminate noise, but it means your installer can connect the output of a factory radio or small amplifier directly to the PM400X4 without the need for a line output converter.

Each pair of channels has a crossover function switch that selects between high-pass, low-pass, or full-range operation. The associated frequency control is adjustable from 50 Hz to 250 Hz, and the crossovers have a -12 dB-per-Octave slope with a Butterworth alignment.

Additionally, Rockford Fosgate included a Punch EQ2 control with each pair of channels. Your installer can dial in up to 18 dB of boost at 45 Hz and 12 dB at 12.5 kHz to give your music a little kick or sizzle. In a marine application, the added high-frequency output can be very beneficial to systems where the speakers are mounted low under the seats.

Keeping Things C.L.E.A.N.

The PM400X4 includes Rockford Fosgate’s C.L.E.A.N. distortion-detecting circuitry on each channel. The amp features an input clip indicator LED beside the RCA jacks to optimize signal-to-noise performance. Each pair of channels has an output clip indicator to let your installer know when the amp reaches maximum output. Setting up an amp with the C.L.E.A.N. circuitry saves time and eliminates clipping, which can add unwanted high-frequency content and damage tweeters.

Element Ready Design

We’ve mentioned the UV-resistant powder coat finish and the stainless-steel terminal hardware. These are just part of the Element Ready design of the PM400X4. Additionally, the circuit board has a two-part epoxy coating that helps eliminate corrosion from exposure to salt, as you’d find near the ocean. The epoxy, combined with hot melt adhesive around significant components like the power supply capacitors, ensures that vibrations and impacts won’t damage the circuit board.

Upgrade Your Marine Entertainment System Today!

If you are interested in having an audio system upgrade designed for your boat, drop by a local Rockford Fosgate retailer. They can combine speakers, subwoofers, and a source with high-quality amplifiers like the Punch PM400X4 to create a system that will sound amazing and last for years.

To find an authorized retailer near you, use the locator tool on the Rockford Fosgate website. While you are online, check out their Facebook, Instagram, and YouTube feeds to stay up to date with the latest product releases and cool event coverage.

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.

Having a great-sounding audio system on your boat is one of the best ways to improve your time on the lake or ocean. Rockford Fosgate is an industry leader in marine audio products. Their speakers, subwoofers, source units and amplifiers are at the heart of some of the best-sounding boats on the water. Let’s check out the Punch Series M2-200X2 amplifier in this product spotlight.

Specifications of the Rockford Fosgate M2-200X2

The M2-200X2 is a two-channel amplifier that’s rated to produce 50 watts of power per channel into four-ohm loads. When the load impedance is two ohms, power output increases to 100 watts per channel. The amp can be bridged to deliver 200 watts of power into a single four-ohm load.

From a perspective of performance, Rockford Fosgate rates the amp as having a bandwidth of 20 Hz to 20 kHz and a THD spec of < 1.0%. Having tested several Punch amplifiers in our labs, we know that they dramatically outperform these modest specifications. We’ve seen frequency response measurements that are within 3dB to well below 5 Hz, and THD numbers in the <0.02% range. Punch and Power series amplifiers not only measure well on the bench, but they also sound excellent.

Marine Stereo Amplifier Features

The M2-200X2 is based on the same cast aluminum heatsink design as the Punch Series amplifiers. These high-mass heatsinks are a key component in determining reliability and thermal stability at high power levels. Indeed, there are many compact amps on the market that make similar power claims. However, we doubt they will play at full power for more than 30 minutes without overheating.

The M2-200X2 has a footprint of 6.8 by 8.1 inches and stands 1.9 inches tall. All the power, signal and speaker connections are made along the front edge of the amp to keep the installation tidy. Angled terminal blocks accept 4-AWG power and ground connections, while a smaller block accommodates at least 12-AWG speaker cables.

The amplifier has a pair of RCA input jacks that will accept up to 4 volts. Adjacent to the speaker jacks is a Molex plug for speaker-level inputs. This will take up to 12 volts of signal. The amp has an Auto Remote Turn-On feature that monitors the inputs for the presence of the BTL offset voltage from a head unit or similar amplifier. This is an excellent feature if your installer is connecting the amp to a radio that doesn’t have RCA outputs.

Signal Processing

The Rockford Fosgate M2-200X2 has a variable crossover that can be adjusted from 50 Hz to 250 Hz. The slope is -12 dB per Octave and features a Butterworth alignment. A switch on the top of the amp allows your installer to select between high-pass or low-pass operation, or to bypass the filtering completely.

The M2-200X2 features Rockford Fosgate’s C.L.E.A.N. circuit on both the input and output, allowing your installer to optimize the amplifier’s power and noise performance. The C.L.E.A.N. LED indicators illuminate when maximum power is achieved.

Element Ready Design

Rockford Fosgate rates the M2-200X2 as being Element Ready. In this application, the amp is constructed with corrosion-resistant materials like a UV-resistant powder-coated cast aluminum heatsink and corrosion-resistant zinc nickel-plated brass hardware. Where the moniker becomes more critical is the use of a conformal coating on the circuit board to prevent corrosion in environments with high salt content. Furthermore, the board and its attached components can withstand impacts and vibrations that would cause problems with lesser products. If your boat takes a pounding as you jump over waves, then this physical stability is crucial to the longevity of your marine audio system.

Upgrade Your Boat with Rockford Fosgate Marine Audio

If you are shopping for a great-sounding, reliable amplifier to upgrade your marine audio system, drop by a local authorized Rockford Fosgate retailer and ask about the M2-200X2. This stereo amplifier is an ideal solution for powering a few sets of speakers or a subwoofer. In fact, running two of them would make for a perfect two-way marine audio system that can play for hours and hours.

Visit the Rockford Fosgate website and use their dealer locator to find a shop near where you live. While online, be sure to follow Rockford Fosgate on Facebook, Instagram and YouTube to learn about their impressive marine audio upgrade solutions.

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.

Installing a marine radio in your boat is the best way to improve your day on the water. If your boat has bow seating, a swim platform, a cuddy, or a full cabin, adding a wired remote to the source unit at the helm makes it easier to control the music. The marine audio experts at Rockford Fosgate offer several wired remote solutions to upgrade their marine multimedia receivers. Let’s check out the PMX-1R wired remote control.

Rockford Fosgate PMX-1R Design

The PMX-1R is a compact wired remote with a rotary encoder, eight buttons, and a 2.7-inch color display. Its functions mimic the controls on the PMX-2, PMX-3, and PMX-5CAN radios. The remote also works with the PMX-8BB and the older PMX-5 source unit.

The remote measures 4.2 inches in height, 4.5 inches wide, and only 2.5 inches deep. Its shallow depth makes it a popular choice for instrument clusters where space behind the mounting panel is an issue. In those applications, a source unit like the nearly identical-looking PMX-3 could be installed in the galley or nav station.

The display features the same TFT wet-bonded design used in the PMX-3 source unit. This construction method allows for great visibility and vibrant colors in bright conditions.

At the center of the remote is a rotary encoder with a large knob that serves as the system volume control. The knob can be pushed to access additional functions. Speaking of additional functions, the eight rubber-coated buttons provide direct access to track or channel selection, source selection, and even dimmer control. Knowing how Rockford Fosgate fanatics think, dedicated SUB + and SUB – buttons provide direct access to adjust the subwoofer output. Things couldn’t be more intuitive.

Remote Wiring and Installation Options

Your installer will find a multi-pin DIN connector on the remote’s rear. This plug connects to any Rockford Fosgate marine source units mentioned above using the PMX16C 16-foot, PMX25C 25-foot, or PMX50C 50-foot extension cables sold separately. Multiple remotes can be used with a single source unit with the addition of the PMXYC Y-cable. Rockford Fosgate marine radios will support up to three remotes and as much as 100 feet of cable in the installation. That’s not 100 feet per remote, by the way.

The remote mounts through a three-inch hole in whatever panel you choose. Your installer can clamp the remote with the aluminum support bracket. Alternatively, they can use the four stainless steel mounting screws to affix the remote from the front. A trim ring is provided to conceal the mounting hardware, giving the remote a clean and tidy appearance. A rubber seal ensures water won’t get into the boat through the mounting hole in either solution.

Element Ready™ Design

Crucially, all Rockford Fosgate marine source units and remotes feature their Element Ready™ design. Where most companies stop with weather resistance ratings like the IPX6 found on the front panel, things go several steps further with the PMX-1R and its brethren. The remotes are tested in a UV light exposure chamber, which mimics years of prolonged sun exposure. The materials and design must remain colorfast and not turn chalky, fade, or dry out. Further, salt fog testing ensures the radios and remotes can be used in saltwater without concern over corrosion.

Rockford Fosgate takes things even further with its vibration and impact testing. When crashing over the waves, your boat can experience impacts of well over 5 G’s, with emergency situations exceeding 7 G’s. All products carrying the Element Ready™ symbol are tested on a vibration bench to ensure the design and internal components can withstand these stresses. When the Product Specialist you are working with tells you that purchasing a Rockford Fosgate marine source unit and remote is an investment in quality, they have the proof to support that statement.

Unlimited Installation Applications

Aside from marine applications, recreational vehicles, motorhomes, travel trailers, campers, and toy haulers are popular applications for Rockford Fosgate marine source units and remotes. A radio can be installed in the dash, and then additional remotes can be added in the kitchen, master suite, or even outside to control a set of marine-grade speakers. If you have a four-seater side-by-side, a PMX-1R could be added to a Stage 5 Polaris Ranger audio system to give the backseat crew as much control as the driver.

Upgrade Your Marine Radio with the Rockford Fosgate PMX-1R Today!

Whether you are starting to build an audio system from scratch or looking to upgrade an existing installation, adding a remote like the PMX-1R is an excellent solution. If space is limited, the PMX-0 remote without an LCD display is another option. To find the best solution for your application, drop by a local authorized Rockford Fosgate retailer today. You can find a shop near you using the online locator tool on their website. As always, be sure to follow our fanatical friends from Tempe on Facebook, Instagram, and, of course, YouTube.

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.