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Full exterior audio with a few cockpit video upgrades.
The factory source unit features a hardwired remote control
on the helm. The factory CD source unit fades from interior
salon speakers to all the exterior amplified speakers.
In the galley cabinet next to the TV, we added a six-disc
CD changer and controller. Just to the right of the controller
we added a line-level volume control dedicated to the speakers
over the bow deck.
In the very back corner
cabinet we installed two four-channel amplifiers. Two channels
run the stereo bow deck speakers. Two channels run the stereo
aft deck speakers. Two channels run two pair of cockpit coaxils
and two channels are bridged mono to drive a cockpit subwoofer.
The varying impedance loads are distributed equally between
the two amplifiers to balance out the power supply demands.
In other words, the harder driven channels are combined with
the lighter driven channels resulting in cool operating temperatures
for both four-channel amplifiers. A four-gauge power service
is run into the engine compartment directly to the domestic
battery bank.
All electronics are concealed with little evidence of the
additional components.
We
upgraded the TV splitter to add a tap for a cockpit TV. Hidden
behind the helm we added an antenna connector in a custom
ABS panel and a shorting cover while the jack is unused. It
was important to keep this connector small and discrete.
Clarion
marine coaxils are located in each side of the arch to the rear
of the elevated bridge.
Clarion
marine coaxils added to the forward section of the bridge.
A Clarion 10-inch marine free-air subwoofer added to the starboard
side combing of the bridge. 3⁄4-inch thick birch baffle
rings were pre-set behind the fiberglass to provide a more rigid
and acoustically damped mounting structure.
Since the starboard side coaxil (high-pass) and subwoofer
(low-pass) play different bandwidths in the same cavity we installed
an injection-molded isolation chamber behind the coaxil speaker.
This procedure significantly improves the sonic performance
throughout the bass and midrange region.
A pair of Clarion marine coaxils added to the lower aft deck.
A pair of water-resistant two-way white outdoor
speakers are mounted under the brow and flood the bow deck
with sound. They’re perfect for lying out on the bow
deck pads whether you’re stargazing or sunbathing. These
speakers have a dedicated volume control to adjust their output
independently from the rest of the system.
Earmark performs many installation procedures specific to
marine. For example every connection is soldered and covered
with a heatshrink sleeve protecting it from corrosive effects.
Gelcoat is treated against spider-cracks and fiberglass penetrations
are dressed and sealed. Fine seams are filled with marine
silicon beads to defend against the collection of watermarks
and mineral stains. There are numerous other acoustic, aesthetic,
electrical and structural steps engineered into our designs
and installations that you won’t see from anyone else.
We go to extremes to maintain the integrity of your boat.
