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    Tower speakers what do you recommend

    Stay clear of a standard 6.5" in-boat speaker that is placed in a small pod for tower use. From the in-boat perspective, the identical speaker would sound MUCH better in the context of the boat's tub/cockpit. Why? Because all these 6.5" coaxials are essentially infinite baffle speakers that...
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    Focal 165AC

    I agree, that's a very good sounding speaker within its price point. And it wouldn't be the first time they were used in a fresh water boat. The front of the speaker is made from materials (cone & surround) that are somewhat resistant to the elements. But metal mesh grills usually get around to...
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    Budget subwoofer??

    If you want decent bass SQ, then go with a good marine IB subwoofer that is direct-radiating (not concealed in a compartment), passive, not active. JL Audio has a less expensive MX 10" IB (versus the M series). For something less expensive, check in with Odin at Earmark Marine. Maybe he can...
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    Batteries and vsr

    You need the boat stators charging the stereo batteries throughout the day so that you don't deplete the stereo bank inordinately low, and then go through more batteries. Yes, there is a concern that after a long duration at rest, after deeply depleting the stereo bank, you would load the...
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    Subwoofer(s)

    Polk Audio engineers??? Good luck with that. Try calling that Polk Audio toll-free technical hotline. You won't find a single domestic acoustic engineer from a brand that is owned by a car alarm company. A recommended .88 sealed enclosure for a dB1240 sub? That's really a joke. Get past the Qts...
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    Subwoofer(s)

    Your first attempt at an enclosure (assuming it was using .75" stock) was a net internal volume (after driver displacement) of barely over 0.5 cu.ft. WAY TOO SMALL. Polk Audio enclosure recommendations are usually worthless information.
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    Playing with my Polk DB651s set up - 2 ohm vs 4 ohm question

    Don't get the 2.7 ohm MM/UM series confused with the 4-ohm dB series. If the dB speaker measures 3.7 ohms, that is simply the DC resistance, and not the true AC impedance. The impedance is frequency dependent and non-linear. Most all speakers will have a narrow dip slightly below the nominal...
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    Class A/B or D amplifier for full range speakers?

    Hope this helps. Let's not overlook the other industry power rating standards. Besides RMS and CEA2006, you also have WLS (When Lightning Strikes) and JBF (Just Before Fire).
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    Class A/B or D amplifier for full range speakers?

    For example, a JL Audio M series amplifier will typically produce its 14.4V rated power with a much lower 12.6V supply, as repeatedly demonstrated in tests. And it will typically produce at minimum 95% of the 1kHz rated power across the entire audio bandwidth, say down to 40 Hz. You can bet that...
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    Class A/B or D amplifier for full range speakers?

    Bruce, Fuses are for protection from catastrophic failure and don't necessarily correlate to power production based on current draw. Power specs are based on very narrow parameters, such as one frequency only and one supply voltage only, so comparing power between HUs and external amplifiers is...
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    Subwoofer(s)

    When you look at the properties of large compartments, as in storage, helm and seating consoles, you are indeed looking at large resonant cavities that share all the implied characteristics....such as non-linear filtering, attenuation, latency, and more. This damages sound quality. But here's...
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    Class A/B or D amplifier for full range speakers?

    In a home 2-channel system, nothing may compare to vinyl with Class AB amplification, but that is reserved for the ultra expensive systems. Why? Because the less you tinker with the signal the better it sounds. As archaic as a needle riding in a vinyl groove may sound, a pure 100% analog chain...
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    Subwoofer(s)

    The wrong way to proceed with subwoofers may be to place them in different locations around the boat. At some perception points they may sum. At other points they may cancel. At some points they will simply smear as they combine. This is one important difference between subs that produce...
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    2016 AR240 budget stereo upgrade

    Reading the comments about certain products placed in the wrong application. Just buy from Odin at Earmark Marine. Odin is an authorized on-line dealer for both Wetsounds and JL Audio. Odin asks lots of questions and will automatically analyze the system on your behalf. In many cases, when the...
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    2011 Limited S JL audio upgrade

    HDPE, KingStarboard, resin-coated birch & marine carpet-clad, are the norms for making amplifier panels. Odin at Earmark Marine is a great source as an authorized on-line dealer for JL Audio and Wetsounds. Odin can answer every possible design and installation question, has several hundred...
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    2016 AR 240 speaker replacement

    Heat is the electronics cancer. Initial defects are exceptionally rare so many of these products have been in the field for a long time and should be considered second hand. In many cases you have a product that has been abused by consistently running it into hard clipping, or by running it to...
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    2016 AR 240 speaker replacement

    Yes, abt and others will run a short term flash sale price on a given item from time to time. However, while Odin @ Earmark Marine lists products on his site at M.A.P., he has progressive deep discounts everyday when contacted privately. Odin will match any current published price by any legit...
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    What's the difference between marine and car amplifiers?

    As just a kid, I began installing 8-tracks in '60s Century's (not Centurion). And that's when my boating experience begins. Not an owner, nor employee, nor associate of any company at this time. Started a car audio company in 1980 (Earmark is still going strong today thanks to Odin, Joe and...
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    What's the difference between marine and car amplifiers?

    I tend to agree with the comments from Mainah. Jensen, Boss, Pyle, and to a degree some, not all, of the Sony amplifiers are disposable (cheaper to replace than to repair). If you are buying those products you take your chances knowing that getting long term service is a real roll of the dice...
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    JL Audio upgrades finally Done

    This is fact. When you place a true high 'Q' infinite baffle subwoofer driver in a box that is small enough that it serves to raise the 'Qtc' (system 'Q'), you lose deep bass and you add a midbass hump...in other words, you get more of a domed response curve. The smaller the box the more...
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