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RESOURCE LIBRARY

Does Preamp Voltage Matter?

Preamp VoltageFor almost as long as there have been car audio enthusiasts, they have been adding amplifiers to their vehicles to increase the power available to drive their speakers. More power means we can turn the volume up higher without distortion. When it came to connecting amplifiers to speakers, the first power boosters connected to the speaker wires of the radio. Now, modern head units offer dedicated RCA preamp outputs to make things easier.

Manufacturers specify how much voltage their source units can produce on these preamp outputs. Most radios offer at least 2 volts of signal, but some offer 4 volt, 5 volt or even 8 volts. Does this preamp voltage matter? Does more voltage make your system louder? Read on to find out.

Signal Chain

Preamp VoltageWhen we install an aftermarket radio in your dash and connect it to the amplifier, we have to make at least one adjustment to ensure everything will work properly. We refer to this step as “setting the gains.” This procedure involves matching the output voltage limit of the source unit with power production capabilities of the amplifier to ensure that both achieve maximum output when the volume is cranked all the way up.

Adjusting an amplifier’s sensitivity is, in theory, a simple process. That said, there are many things to take into consideration. How loud is the source material recorded? Does the head unit distort at full volume? Has anyone adjusted the radio’s tone controls or equalizer? Does the amplifier have any tone controls? If any one of these criteria are overlooked, the sensitivity adjustment may not be accurate.

What is the drawback to an improperly configured sensitivity control? If it is set too low, then you cannot get all the power available from the amplifier to your speakers. If the sensitivity control is set too high, then you can easily distort the output of the amplifier. A second side effect of adjusting the sensitivity control too high is that you increase the noise produced by the amplifier. Nobody wants to hear a hiss in the background of their music, so setting things properly is critical.

What Does High Preamp Voltage Do?

Preamp VoltageSome intensive research among several of us “old” car audio enthusiasts revealed that there were even a few twin-shaft cassette receivers with high-voltage preamp outputs. Some sales and marketing folks decided that more voltage meant more volume. In the early ’90s, several head unit manufacturers started marketing their radios as having voltage preamp outputs. If nothing else changed, sure – in theory, more voltage means more output. That said, if you swap from a 2 V source unit to a 4 V, and then readjust the sensitivity control on your amplifier down to compensate for the extra voltage, the maximum output level should stay the same.

If more voltage does not make your system louder, what is the benefit of this extra voltage? The answer is a reduction in gain of the amplifier and, thus, a reduction in potential noise. If your amplifier is set up to produce full power with a 2 volt signal and has a subsequent signal to noise ratio of 85 dB, then it is not unreasonable to expect that the noise would reduce by about 3 dB when we turn the sensitivity down by the same amount.

To the Test

We set up a premium consumer-grade amplifier on the lab test bench. It had an S/N Ratio specification of 89 dB when producing 1 watt of output and connected to a 4 ohm load. This is a pretty good rating these days. We set the amp up to produce 1 volt of output with a 1 kHz sine wave at a reference level for our function generator at -30 dB relative to full signal. We then took a long frequency response measurement.

The next step was to reduce the output signal of the function generator by an arbitrary amount – we chose 6 dB. We readjusted the sensitivity control of the amplifier so the output level was once again 1 volt and took another long frequency response measurement.

The results of the two measurements are shown in Figure 1.

Preamp Voltage
Figure 1, output dropped by 6db.

In Figure 1, you can see the large spike in frequency at 1 kHz on the right side of the screen. We zoomed in to fill the screen with as much information as possible below this frequency. The gold line shows the background noise produced by the amplifier with the sensitivity control at the lower of the two settings. The green line shows the background noise when we increased the sensitivity of the amplifier by 6 dB.

Figure 2 shows the difference in noise level at 100 Hz. Not surprisingly, the difference in noise is just under 6 dB.

Preamp Voltage
Figure 2, just under 6db of noise difference.

Conclusion

When it’s time to go shopping for a new source unit, among the dozens of cool connectivity features, options for display technologies and different brand names, paying attention to specifications is still important. If you are planning to add an amplifier to your mobile electronics system, make sure your source unit can produce at 4 volts of output on the preamps. This extra voltage will allow your installer to reduce both the sensitivity controls on your amplifier and the background noise level of the system.

Visit your local mobile electronics specialist retailer today for more information on which source units have high-voltage preamp outputs.

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.

Filed Under: ARTICLES, Car Audio, RESOURCE LIBRARY

Rear Speakers – A Benefit or a Bad Habit?

Rear SpeakersFor decades, automobile manufacturers have installed relatively large rear speakers in their vehicles. The stereotype of a set of 6×9 speakers sitting on the parcel shelf of a Monte Carlo is as “car audio” as it gets. As the industry has evolved, the importance of rear speakers has diminished. Are rear speakers necessary? Do they offer a benefit? Are we just holding on to a bad habit? Read on to explore more about rear speakers.

Why are They So Big?

Rear SpeakersAutomakers used to take advantage of the opportunity to put speakers in the rear of their vehicles because those speakers could be larger that the ones in the front of the vehicle. Consider a third-generation Camaro or Firebird. They had a set of 4×6 speakers on the dash and a set of 6×9 speakers in the rear sides. Likewise, a fourth-generation Monte Carlo had 3-1/2-inch speakers in the dash and 4×10-inch speakers on the skinny little rear deck.

In most cases, a speaker with more cone area will play louder for a given amount of power. Larger speakers are capable of producing more bass. We recently saw a factory audio system with a 9-inch door speaker, and 6x9s in a pickup truck and SUV doors are very common.

What is Our Goal?

Rear SpeakersThe trend in the last decade for both factory and aftermarket car audio systems has been to recreate a live performance as realistically as possible. This shift in design has introduced us to the need for proper speaker placement and the use of larger speakers in the front of the vehicle. The use of digital signal processors to set up crossovers, signal delay and equalization for each speaker location has further improved on our ability to create what is known as a soundstage in our vehicles.

A soundstage refers to a perceived source location for our music. In a perfect world, our music would appear to come from far out in front of us and provide a good sense of width and depth, excellent focus, and realistic ambiance – just like a live performance. Automobile manufacturers have to balance cosmetic design versus optimum speaker placement, and speaker placement often loses the fight.

What is Your Goal?

Rear SpeakersHow do you like to enjoy your music? Do you attend live performances? Do you listen to a two-channel system at home? Do you usually use headphones? Are you into surround sound? Your answers to these questions can help your car audio specialist retailer design a system that will sound the way you want.

If you like live performances and two-channel audio, then it’s most likely that you would enjoy a system with a soundstage that is out on the dash of the vehicle. In this application, rear speakers are not very important, and in most cases, the money saved by not purchasing and installing rear speakers at all will allow you to buy better front speakers.

If you listen to headphones, then you may want the sound from your system to wrap around you evenly. You may enjoy a system that makes you feel as if you are in the middle of the sound. An equal amount of sound will come from in front of you as behind you. In a system like this, using similar or even identical speakers in the front and back can help produce great results.

If you watch a lot of movies in surround sound, then you need to work with your retailer to decide what is right for you. In movies, the side and rear channels are usually reserved for special effects and ambiance. You may want to go without rear speakers in a mobile audio system. Very few sources include surround information, and currently there are no aftermarket surround sound reproduction solutions, although some are coming.

Are You a Purist?

Rear SpeakersIn pure, raw technical terms, you want as few speakers in your system as possible. Additional sources of sound can result in interference patterns called comb filtering. An ideal system would offer full-range left and right signals, and – because we typically can’t use large speakers in our doors – a subwoofer to fill in the bottom few octaves.

The placement of the speakers can have a dramatic effect on the sound of the system. From a perspective of tonal accuracy, having the midrange speakers in the doors works well. This location typically produces a very wide soundstage. A door location does not often result in a soundstage that appears to emanate from far out in front of you. To achieve that, you may need to use a smaller midrange speaker with a tweeter in a dash or A-pillar location.

When possible, try to ensure that tweeters are mounted within 20 degrees of being on-axis to the listening position.

Who’s Back There?

Another consideration for rear speakers is whether you have passengers in the rear of the vehicle. If you have children or friends in the back, then it would serve them well to have speakers to enjoy. Yes, they will be able to hear the dash or front door speakers, but not as clearly as if they had something close by. It would not be unreasonable to design an audio system that allowed you to turn the rear speakers on and off, depending on your needs.

Rear Speakers as Rear Fill

Rear SpeakersFor systems designed with a focus on the front soundstage, rear speakers are often operated at a much lower relative level than the front. Some people call this technique “rear fill.” The intent is to provide a sense of spaciousness to the listening environment. Employing rear fill speakers splits the divide between systems with or without rear speakers. The relative level of these speakers is critical. Too much can start to pull the soundstage rearward.

There is no right or wrong when it comes to a preference for the location of your soundstage. Whatever you enjoy is the right choice. Your local mobile electronics specialist retailer can work with you to design a system that sounds the way you enjoy. Drop in today and ask if they have a demo vehicle that you can audition. That’s a great way to decide what solution is best for you.

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.

Filed Under: ARTICLES, Car Audio, RESOURCE LIBRARY

Product Spotlight: Sony XAV-AX3700 Multimedia Receiver

Sony XAV-AX3700

Car audio source unit manufacturers are constantly developing new products to fill the gaps between entry-level and flagship models. Sony recently released a new 2-DIN digital multimedia receiver called the XAV-AX3700, which slides into the mix just below the XAV-AX4000. This new radio features a 6.95-inch touchscreen display, Apple CarPlay connectivity and iDatalink Maestro vehicle integration. Read on to learn about what else it offers.

Sony XAV-AX3700 Source Features

The XAV-AX3700 starts with extensive support for digital media files stored on a USB flash drive. The radio can decode MP3, WMA, WAV, AAC, FLAC, ALAC, DSF and DSDIFF audio files. It also has Bluetooth, which includes the A2DP and AVRCP profiles, which allow music to stream from a smartphone or digital media player. The radio supports LDAC for impressive wireless sound quality and SBC and AAC for maximum device compatibility.

Of course, the radio has a high-quality AM/FM receiver, which captures RDBS information so you can see album and song title information if the station provides it. The retailer installing the radio can upgrade it with a SiriusXM satellite radio receiver, allowing you to listen to genre-specific music or your choice of entertainment channels nonstop from coast to coast. Sony provides a rich SiriusXM interface, including the channel logo and the album art for the track being played if the station you’re tuned in to provides it.

Sony XAV-AX3700
The XAV-AX3700 can be upgraded with a dedicated SiriusXM satellite radio receiver for uninterrupted entertainment.

Apple CarPlay Smartphone Connectivity

The XAV-AX3700 includes support for wired Apple CarPlay. Plug your phone cable in, and you’ll have access to all the music on your phone or your favorite streaming services. You can choose whatever you want using intuitive voice commands. Of course, you can make phone calls, send text messages or get detailed turn-by-turn directions to any address or business in North America using your favorite app.

Sony XAV-AX3700
Wired Apple CarPlay connectivity makes it easy to communicate while driving.

Vehicle Interface Features

As mentioned, the XAV-AX3700 supports the iDatalink Maestro SR, RR and RR2 interfaces. These modules allow communication with the computers in your vehicle to provide access to climate controls, as well as factory-installed infotainment components like microphones, steering wheel controls and a rear-vision camera.

If your application does not have an RR or RR2 module, your installer can integrate steering wheel controls using other modules, like the Maestro SW. Talk to the Product Specialist you are working with for details about your vehicle’s specific make, model and trim level.

Sony XAV-AX3700
The Sony XAV-AX3700 supports the Maestro SR, RR and RR2 vehicle integration interfaces.

Intuitive Interface Simplifies Operation

Sony is the benchmark when it comes to human-machine interfaces. Not only does the XAV-AX3700 boot incredibly quickly, but the button layout on the screen and the menu functions are super-intuitive. The 6.95-inch touchscreen display is bordered by a row of six buttons along the bottom edge.

The main display menu includes five user-configurable options. You can set your favorite sources or commonly used functions, like the backup camera display, to be readily available. When an iPhone is connected, a dedicated icon for Apple CarPlay appears to the left of the clock.

You can also customize the wallpaper image behind the icons from several included options or upload your own image to personalize the radio. A new customizable clock layout feature gives you an option for either an analog or digital clock in the center of the screen, or a smaller digital clock in the top right corner.

Sony XAV-AX3700 Audio Features

This new Sony radio includes a full suite of audio integration features to maximize the sound system’s performance. A five-channel time alignment screen helps improve staging and imaging. A 14-band graphic equalizer can smooth out peaks and dips in the system frequency response. Built-in electronic crossovers with adjustable slopes maximize the performance of your speakers.

The radio includes a four-channel amplifier rated to produce 20 watts per channel, making driving the factory speakers easy. Thanks to dedicated front, rear and subwoofer preamp outputs, you can easily upgrade the radio with an external amplifier. An integrated subwoofer level control makes fine-tuning your system to suit your music or mood easy.

Sony XAV-AX3700
Time alignment, a 14-band equalizer and adjustable crossovers make it easy to fine-tune your audio system.

Single-DIN Chassis Simplifies Installation

A feature that car audio installers will love is the single-DIN chassis behind the 2-DIN display. This 2-inch tall chassis design leaves room for wiring, integration modules and wire harness adapters. Notably, the space is available beneath the radio, where these parts typically rest. The depth of that chassis is shallow as well, allowing use in vehicles with a tight fit behind the radio screen.

Upgrade Your Driving Experience with Sony

Whether you’re looking to add Apple CarPlay or high-quality audio streaming to an older vehicle, or you have to replace a factory-installed radio that’s kicked the bucket with one that requires the use of a Maestro module that retains some factory features or settings, the new Sony XAV-AX3700 is an excellent choice. Drop by a local Sony car audio retailer today and ask for a demonstration. You can find a retailer using their online locator tool. Also, follow Sony on Facebook and Instagram to keep up with the latest new car audio products.

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.

Filed Under: ARTICLES, Car Audio, Products, RESOURCE LIBRARY Tagged With: Car Audio, Sony

Product Spotlight: Rockford Fosgate M2-65 and M2-65B Marine Speakers

Rockford Fosgate M2-65

I remember when only one or two large car audio companies offered products designed specifically for marine applications. These days, there are dozens of brands in that market. From my extensive hands-on research, I can tell you that Rockford Fosgate is one of the brands you’ll want to check out for your boat. Their engineering-based marine speaker solutions are truly unique in the market. This Product Spotlight will examine the M2-Series M2-65 and M2-65B 6.5-inch Color Optix marine speakers.

Rockford Fosgate Marine Speaker Features

As is typical of Rockford Fosgate, they offer diverse speaker solutions to suit every application and budget. The Marine series starts with the affordable M0 line, which features white or black 6.5-inch coaxial drivers. From there, you step up to the M1 line, adding 6-, 6.5- and 8-inch drivers with Color Optix integrated RGB LED lighting. These speakers can handle even more power so that they can play louder. At the top of the marine speaker series are the M2 speakers. In this line, you have 6.5-, 8- and 10-inch coaxial drivers, with the two larger offerings available with a conventional tweeter or a small compression horn.

The M2-65 and M2-65B speakers are 6.5-inch coaxial drivers with your choice of white or black (the B at the end of the part number) grilles. The speaker system includes two drivers, stainless-steel grille inserts, mounting hardware and speaker wire pigtails with high-quality Deutsch connectors.

They are rated to handle 150 watts of power continuously with peaks of 300 watts. Efficiency is specified as 91.8 dB at 1 watt/1 meter. The drivers have a nominal impedance of 4 ohms and require 2.49 inches of mounting depth in a 5.36-inch cutout in your boat.

Rockford Fosgate M2-65
The M2-65B marine speaker set includes a pair of 6.5-inch coaxial speakers, wire pigtails, stainless steel hardware and grille inserts.

Marine Speaker Chassis Design

The woofer basket is injection molded from PA66 with UV inhibitors, a plastic mixture reinforced with 30% glass fiber for added thermal stability, damping and rigidity. As mentioned, electrical connections to the speaker are made via integrated Deutsch connector sockets.

The speaker’s chassis includes cooling vents with a nano-coated mesh screen to help keep water out. The basket conceals a -12 dB/octave crossover for the tweeter. They call this their Integrated Concealed Crossover design.

The speakers have a 12-spoke plastic grille made from ultraviolet- and salt-resistant Centrex plastic. As mentioned, the laser-cut stainless-steel inserts are also included in the package. Just let your installer know what look you want; they can take care of everything during installation.

Rockford Fosgate M2-65
The fiberglass-reinforced PA66 chassis includes Deutsch connectors for the speaker and connection to the Color Optix RGB LED lighting.

Speaker Component Features

The mineral-filled polypropylene woofer cones feature a co-molded thermoplastic elastomer synthetic rubber surround. The surround uses the Vertical Attach Surround Technique mounting geometry where it attaches to the chassis. This feature increases cone area, which improves sensitivity and bass output. A 1-inch diameter, high-temperature Kapton voice coil former is at the base of the cone. The large diameter of the voice coil is the key reason these speakers are rated to handle 150 watts of power continuously. A linear aramid-polyester spider provides good cone control and high excursion levels. The tinsel leads, attached to gold-plated brass terminals in the chassis, are encased in rubber to protect them from water damage.

The 1-inch tweeter in the speaker’s center features a design that Rockford Fosgate calls PXNX. It uses a pair of compact neodymium slugs for excellent efficiency.

Rockford Fosgate M2-65
The 1-inch PXNX tweeter is designed to offer exceptional clarity and great efficiency with its dual magnet motor design.

Color Optix RGB LED Lighting

A second four-pin socket on the speaker chassis provides access to the Color Optix RGB lighting. Your installer can power the lights using the Rockford Fosgate PMX-RGB LED lighting controller. The controller works with the RF Connect app on your smartphone to let you select the light color or illumination pattern. The RF Connect app is available for both Android and iOS mobile devices.

The LEDs are mounted to the underside of the grille. An optically clear, UV-stable coating protects the lighting from water damage. When on, the lighting makes the woofer cone glow in your choice of thousands of colors. You can also use the RF Connect app to select color-shifting patterns.

Rockford Fosgate M2-65
The M2-65B and M2-65 include Rockford Fosgate’s Color Optix integrated RGB LED lighting.

Element Ready Design Ensures Reliable Performance

Rockford Fosgate doesn’t pull any punches when it comes to ensuring that their marine audio products can withstand whatever Mother Nature throws their way. Their Element Ready design covers water resistance and UV and salt exposure. In terms of waterproofing, these speakers carry an IPX6 rating. Ultraviolet exposure testing passes the ASTM G154 500-hour accelerated UV test. Salt exposure is evaluated using the ASTM B117 500-hour salt-fog test. Finally, many marine and powersports speaker manufacturers overlook vibration and impact testing. Rockford Fosgate uses the ISO60068-2-64 Vibration testing standard to ensure that the speakers can take a beating as your boat hits even the gnarliest waves. Rockford Fosgate backs the M2 speakers with a two-year warranty against manufacturing defects.

Rockford Fosgate M2-65
All Rockford Fosgate marine speakers pass their torturous Element Ready testing to ensure that they’ll perform reliably in your boat.

Upgrade Your Boat with Rockford Fosgate M2-65 or M2-65B Speakers Today

If you’re shopping for high-performance marine speakers for your boat, drop by a local authorized Rockford Fosgate retailer today to audition the M2-65 and M2-65B speakers. They can design a marine entertainment system with a source unit, high-performance amplifiers, speakers and subwoofers so that your boat sounds the best on the lake or river. To find a retailer, use the locator tool on their website. For more information about Rockford Fosgate products, visit their website, Facebook page, Instagram feed or YouTube channel.

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.

Filed Under: ARTICLES, Marine Audio, Products, RESOURCE LIBRARY Tagged With: Marine Audio, Rockford Fosgate

Product Spotlight: Rockford Fosgate M2D2-10I and M2D4-10I Marine Subwoofers

Rockford Fosgate M2D2-10I

When choosing subwoofers for a boat audio system, having the correct drivers for the application is crucial to designing a system that sounds good and will last for years. The marine audio fanatics at Rockford Fosgate have a subwoofer solution for every application. We will examine the 10-inch M2-Series M2D2-10I and M2D4-10I subwoofers in this spotlight.

Subwoofer Solutions for Every Application

Before we discuss the M2D2-10I and M2D4-10I subwoofers, we should discuss all available options. The M2-Series includes subwoofers for relatively small sealed or ported enclosures and the I-series for infinite baffle applications. You can choose from 10- or 12-inch woofers with dual 2- or dual 4-ohm voice coils. You can also choose from black or white “sport” grilles. All 16 different M2-Series subwoofers also include a stainless-steel grille insert so you can pick your style before installation.

The M2D2-10I is a 10-inch subwoofer with a white grille and dual 2-ohm voice coils. Its brother is the M2D4-10I, which has dual 4-ohm coils. The same drivers are available with black grilles in the M2D2-10IB and M2D4-10IB.

Rockford Fosgate M2D2-10I
You can choose black or white grilles with either dual 2-ohm or 4-ohm voice coils in the 10-inch M2-Series marine subwoofers.

10-inch Infinite Baffle Subwoofer Specifications

The Rockford Fosgate M2D2-10I and M2D4-10I are rated to handle 400 watts of continuous power with peak power rated at 1,600 watts. The drivers have an efficiency of 90.3 dB and an Xmax specification of 11 millimeters of excursion in each direction. These subwoofers have a stiff aramid-polyester spider with a linear rate to control cone motion without an enclosure. The result is a driver that plays loudly without concerns about the woofer cone bottoming out.

Marine Subwoofer Features

These subwoofers are based around a 30% fiberglass-reinforced PA66 nylon basket. The mixture includes UV inhibitors, so the plastics won’t chalk, fade, crack or discolor when exposed to the sun. The electrical connections are made via Deutsch/Amphenol connectors with gold-plated brass terminals molded into the basket. The basket also has integrated cooling vents protected with nano-coated mesh to keep water out.

The woofer cone is made from mineral-filled polypropylene. The mineral powder adds thermal stability and improves the damping characteristics. A large 2-inch Kapton voice coil serves as the heart of the subwoofer. The tinsel leads from the voice coil to the terminals are encased in silicone to protect them from damage. Rockford Fosgate includes a VERSA switch that lets your installer quickly select between series and parallel wiring to simplify the installation. For dual 2-ohm models, the VERSA switch allows you to select between 1-ohm (parallel) or 4-ohm (series). On dual 4-ohm models, you can select 2-ohm or 8-ohm.

Rockford Fosgate M2D2-10I
The VERSA switch allows your installer to select series or parallel wiring to speed up installation.

The top of the cone is bonded to a UV-stable, injection-molded foam surround. The surround mounts vertically to the edge of the basket. Rockford Fosgate calls this their Vertical Attach Surround Technique, a design that increases the effective cone area while maintaining standard mounting dimensions. The effective surface area of the M2D2-10I subwoofer is 363 square centimeters or 56.72 square inches. Popular competing products have 320 to 340 square centimeters. When it comes to optimizing efficiency, cone area matters.

Designed for Durability

The Rockford Fosgate engineering team takes reliability seriously. Their marine speakers and subwoofers pass torture tests to earn their Element Ready label. These include 500 hours of accelerated UV and salt fog testing, an IPX6 water intrusion rating and durability testing that meets the ISO60068-2-64 standard. A two-year warranty backs the M2-Series marine subwoofers against manufacturing defects.

Color Optix Integrated Lighting

Nobody can think of a wakeboard boat without thinking about style. As mentioned, you can choose from white or black sport grilles and decide whether you want the stainless inserts installed. Rockford Fosgate has integrated RGB LED lighting under the grille in a design they call Color Optix to take things a step further. You can choose from thousands of illumination colors using the RF Connect smartphone app with the optional PMX-RGB lighting controller. You can also configure color-shifting patterns if you want. Of course, the wiring for the lighting, along with the circuit boards, also meets the Element Ready requirements.

Rockford Fosgate M2D2-10I
The M2-Series subwoofers feature Color Optix RGB LED lighting, which illuminates the woofer cone in thousands of colors.

Infinite Baffle Installation Simplicity

We should clarify the definition of an “infinite baffle” subwoofer installation. This refers to mounting the subwoofer in a location where the sound coming from the back of the driver can’t mix with the sound from the front. In short, it’s like mounting the subwoofer in a wall that extends forever. In a boat, a storage locker under a seat is one of the most common installation locations. Many infinite baffle subwoofers are mounted in the podium in a center-console boat.

Rockford Fosgate M2D2-10I
The front storage locker of this Yellowfin fishing boat serves as an ideal installation location for infinite baffle subwoofers.

Upgrade Your Marine Audio System with Rockford Fosgate M2 Subwoofers Today!

Whether you want your marine audio system to play louder or deliver a solid kick, the Rockford Fosgate M2D2-10I and M2D4-10I infinite baffle marine subwoofers are perfect. Drop by a local authorized retailer today to discover how these subwoofers can transform your time on the water. For more information about Rockford Fosgate products, visit their website, Facebook page, Instagram feed or YouTube channel.

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.

Filed Under: ARTICLES, Marine Audio, Products, RESOURCE LIBRARY Tagged With: Rockford Fosgate

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