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Power handling ability
Bigger is better, but don't get your hopes up that
a 10W signal will sound better on a 100W speaker
than on a 10W speaker. Be sure the speakers are
rated for at least as much RMS Watts output as your
receiver, or you'll blow speakers when you crank up
the volume. Note that when two or more speakers
are connected in parallel to the same channel of
the stereo, the speakers will share the power-two
20W speakers will handle a total of 40W, three 20W
speakers will handle 60W, etc.
Number of drivers-Coaxial, Triaxial
and Dual Cone
, or coaxial, speakers include a separate
tweeter-located inside the woofer-to handle
the high frequencies and accurately deliver your
music's sound range.
, or triaxial, speakers add a midrange
driver to the separate woofer and tweeter for
additional fullness and realism.
speakers are a less costly alternative
using a small "whizzer" high frequency cone at-
tached in the center of the woofer. Unlike a two-way
speaker, dual cone models have only one voice coil
(the coil of wire that converts the electrical signal
from the receiver into mechanical vibration that
drives the cone of the speaker).
Box Style or Flush Mounted?
Bracket-mounted box speakers are easiest to in-
stall, and include their own acoustically-designed
enclosure, so the sound you heard in our store will
be what you hear on your boat. They take up more
space, so may add clutter to a busy cockpit. Flush-
mount speakers are clean and attractive, fit in tight
spaces and can't snag tackle or lines, but need
Magnetic interference & shielding
Magnetic compasses have their needles pulled off
magnetic North by nearby magnets from motors,
unshielded cables and audio speakers. If you are
installing a speaker close to your compass, look for
speakers with magnetic shielding.
Do you want a Subwoofer?
Big speakers (8" diameter or larger) that have only
one job-attacking your eardrums with massive bass.
Most subwoofers are mounted inside specially
designed boxes. A "Free-air" or infinite baffle sub-
woofer doesn't need a box, and saves valuable
space, but you should install it in an airtight com-
partment or enclosure. Free-air subs also have flat
frequency response, for clean, crisp bass.
If you install a subwoofer, you need a separate
power amplifier to drive it (subwoofers are either
"powered," containing their own amp, or "unpow-
ered," and require a power amplifier). Regular
speakers can run off the receiver's built-in amp, but
you'll get more power, more volume and cleaner
sound from your premium speakers with a separate
power amplifier. In a high-noise environment, like a
fast powerboat, the amp provides the guts you need
for great sound. Installing an amplifier requires a
thick power wire run directly to your boat's battery,
and you also have to run audio cables to your head
unit's preamp outputs (or in some cases, connect
your speaker wires to your amp). If you don't plan
to add an external amplifier, look for a powered en-
Let's say you've chosen four speakers, two flush-
mount speakers and two surface mounted box
speakers. For the surface mounts, installation is a
snap. Just plan where you want the screws and drill
a small hole for the speaker wire, seal each hole with
a dab of silicone caulk, and that's about it. Keep
the wires behind the bulkhead wherever possible,
bundling them together with wire ties.
Proper flush speaker mounting can be tricky. Speak-
ers vibrate a diaphragm (the cone) back and forth
to move air and generate sound. Confined air space
behind the speaker will inhibit the diaphragm's
movement and reduce its low frequency response.
Make sure there is enough space (at least 1cu. ft.)
behind a flush-mounted speaker, with no air path
between the front and the rear of the speaker, to
get the best bass response. Follow manufacturer's
specifications for cutout sizes. Frequently, a tem-
plate is included with the speakers. No boater likes
sawing into the wall of their cabin, but we suffer for
good sound. Just make sure you measure twice.
Some additional tips:
A speaker is directional
, producing the best
sound along its central axis. Sound radiates in
a pattern approximately 45 off this axis, and if
you aren't in this radiating zone, the sound must
bounce off a reflecting surface in order to be
heard. Point the speakers at your ears. Below
deck, with many reflective surfaces to contain the
sound, direction is less critical.
In most cases, 18-gauge wire will suffice
connect the speakers to the stereo. Unstranded
wire exposes less area to corrosion as long as
its ends are sealed between the coating and the
soldered part. Liquid electrical tape is excellent
for this application.
Be sure your speakers are connected "in
with their positive terminals matched with
the positive side of the stereo output. Speakers
connected "out of phase" with some connecting
wires reversed won't cause harm to the stereo or
the speakers, but will cause some tones to cancel
each other out with an audible decrease in sound
quality. If you aren't sure which speaker terminal is
positive, connect an AA or AAA battery across the
terminals. When the positive terminal of the battery
touches the positive terminal of the speaker, the
speaker cone will move forward.
Do you want a Subwoofer?
Box Style or
Number of drivers-
Coaxial, Triaxial and
Selecting Marine Speakers
As with home theater and automotive audio sys-
tems, speakers on your boat are critical to good
sound quality, so don't skimp. A middle-quality
receiver paired with the best speakers is more
satisfying than an expensive receiver driving
Power handling ability
Our compact box speakers are magnetically
shielded so you can mount them anywhere without
worrying about affecting readings on your compass,
autopilot or other sensitive electronics. Aluminum
brackets and grilles are designed for durability in
tough marine environments. Polypropylene cones
and mylar tweeters are fully waterproof. Gimbal
mount (included) lets you mount the speakers
horizontally or vertically for optimum sound.
Mounting hardware included.
Compact Two-Way Waterproof Box Speakers
Plastic case, aluminum grille
7 1/2"W x 5 3/16"H x 4 3/8"D
WMSTE# WM-8000 ShWt 7.3
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