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Author Topic:   Stereo Speaker Mount for 15-foot Boat With Center Console
bothedog posted 04-23-2009 01:08 PM ET (US)   Profile for bothedog   Send Email to bothedog  
Any ideas or input on mounting stereo speakers in a 15' Center Console would be appreciated. Have considered under the helm seat/bench or within the console (limited space). Twenty-four years of running her and decide we now need to add some sound...

chopbuster posted 04-24-2009 09:46 PM ET (US)     Profile for chopbuster  Send Email to chopbuster     
Although both are yours to use as you see fit, save your
time and money. True stereo reproduction and listening begins and ends at home. A quality portable waterproof
am/fm/wx radio is another good choice.

I use this; http://tinyurl.com/amqdjz

N/A

...and then there are the sounds of silence to consider.

jimh posted 04-25-2009 12:33 PM ET (US)     Profile for jimh  Send Email to jimh     
I recommend TANNOY loudspeakers. When driven by a Class-A amplifier they give terrific stereo imaging.


I like the TANNOY dual-concentric speakers. See

http://www.tannoy.com/StudioDetail.aspx?pid=21&sid=34

A pair of these weighs only 56-lbs. I think they retail around $800 each.

Finding a good Class-A MOSFET amplifier is getting harder. Look for a used HAFLER in good condition. They sell on eBay for $300 or more.

To power the HALFLER on you boat while at the dock you can just run on shore power. If you need to power it while underway, I recommend a very high-quality sine-wave convertor. These can be rather expensive. I think you ought to allocate about $500 minimum for this component.

Of course, interference between the ship's compass and the magnetic field of loudspeakers is always a concern. Some speakers are specifically made with shielded magnetic fields.

However a pair of TANNOY loudspeakers powered by a nice HAFLER amplifier will sound great.

glen e posted 04-25-2009 03:52 PM ET (US)     Profile for glen e  Send Email to glen e     
[Gave a criticism of the discussion so far. As a general rule we do not include discussion of the discussions in the dicussions themselves. Actually, we don't have any place for a discussion about the discussions themselves.--jimh]

Look at a set of inexpensive Infinity speakers and a head unit from Sony or Clarion. Even simpler is an iPod connected straight to a good small 2 channel amp lie a PolyPlanar or a Clarion.

jimh posted 04-25-2009 05:31 PM ET (US)     Profile for jimh  Send Email to jimh     
I think an iPod is a great source of recorded music, but the discussion is focused on speakers and where to mount them on a 15-foot boat with a center console.
jimh posted 04-25-2009 06:14 PM ET (US)     Profile for jimh  Send Email to jimh     
To get a good stereophonic image from loudspeakers you have to meet these criteria:

--there are two speakers

--the speakers are in front of the listener

--the listener should be position midway between the speakers

--the distance between the speakers and the listener should be proportionate to the distance separating the speakers. Generally the listener should not be closer to the speakers than half the distance that separates the speakers.

--the centerline of the high frequency drivers of the loudspeakers should be close to the height of the ear of the listener, and the axis of the loudspeaker should be pointed directly toward the listener.

If the source of a high-pitched sound is not at ear level, there is a great loss in localization of the source. A good example of this can be experienced when four people stand together talking with cellular telephones in their pockets. When one cellular telephone rings, everyone will reach for their telephone. This happens because localization of the source of a sound coming from below the plane of the ears is not very good.

In a 15-foot boat the beam is typically in a ratio to the length of 1:2.5, which implies a beam of 15/2.5 or six-feet. If we mount the speakers near the gunwale we will have a speaker width of about five-feet, so we need the speakers about 2.5-feet forward of the listener. If we assume the primary listening spot is the helm station, then we need the speakers about 2.5-feet forward of where the helmsman's ears would be.

We also need the speakers on ear level with the helmsman. In a 15-foot boat this means almost certainly the loudspeakers will be mounted above the height of the gunwales of the boat.

If the speakers are to be mounted to the console itself, we can assume the width of the console to be at least two feet narrower than the beam of the boat, or about four-feet. We'd want the listener to be back at least two feet. These dimension seem reasonable.

mphillips posted 04-26-2009 05:38 PM ET (US)     Profile for mphillips  Send Email to mphillips     
In my center console, I mounted the two speakers in the gunnels slightly ahead of the driver's position. That allows them to produce a direct line-of-sound to the driver's ears. Also great for stereo imaging.
andygere posted 04-26-2009 11:53 PM ET (US)     Profile for andygere  Send Email to andygere     
I have a set of Poly Planar MA 840 compact surface mount speakers on my Outrage. They have surpisingly good sound for such small speakers. They are loud enough to hear the ballgame or the music of your choice, but probably not so loud as to cheese off cranky boaters or any nearby website moderators. They come with mounting hardware and can easily mount on or under your console, or under a thwart. I stuck mine on with some insdustrial strength 3M double stick tape, and they haven't moved.

http://www.polyplanar.com/productsingle.aspx?prt=MA-840

davej14 posted 04-29-2009 04:32 PM ET (US)     Profile for davej14  Send Email to davej14     
Here is some detail on the installation I did on my Dauntless 14 foot. I put the speakers in the center console and a sub woofer under the RPS. The sound is great and I wouldn't change anything.

http://www.bobdean.com/images/djpics/Center-Console-w-Stereo.jpg
http://www.bobdean.com/images/djpics/SubWoofer-in-RPS.jpg

I had numerous discussions with the folks at Polyplanar before deciding on the components. I chose their radio because it does not need an additional cover to protect it from the elements. Here is the list of components that I ended up with:

MRD-60W Radio
IC-3.5PM MP3 Adapter
MS-55 SubWoofer
MA4055W Speakers

BTW, Polyplanar makes an amplifier just for an iPOD (or MP3 player) if you don't need the functions of the radio.

bothedog posted 04-29-2009 04:56 PM ET (US)     Profile for bothedog  Send Email to bothedog     
Thanks all. Excellent range of input! Will post when I decide which direction and install.
jimh posted 04-29-2009 08:06 PM ET (US)     Profile for jimh  Send Email to jimh     
Keep an eye out for these loudspeakers. They are hard find these days but they'd be perfect for a 15-footer:

http://www.floobydust.com/electrovoice/sp13.5trbxwk.pdf

bothedog posted 04-29-2009 10:29 PM ET (US)     Profile for bothedog  Send Email to bothedog     
Thanks Jim :)

Might be operating within the range of 3 toed Sloths, so out of the question (actually have a distant cousin named David J. Sloth Jr. who has three toes on his dominant foot and am concerned by the potential of immediate disintegration - Sr., genetically matched in terms of toe count, met the same demise). Although, I am attracted to the potential of turbulant buffeting since we are original Parrot Heads. Yet, if this happens the darn thing won't work.

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