Our Product Research Team
At Crutchfield, you'll get detailed, accurate information that's hard to find elsewhere.
That's because we have our own in-house Product Research team — they open the box,
verify contents, check the owner's manual, and record dimensions, features and specs.
We stay on top of new products and technologies to help people make informed choices.
Enclosure: Each speaker is mounted in a ported polypropylene
enclosure. The two ports are along the perimeter of the speaker cone, and open
into the listening area through the grille.
Drivers: Each speaker consists of a 4-1/2" polymer fiber
full range driver mounted in the ported enclosure. The silicon coated surround and
polymer driver are resistant to the type of deterioration often caused by extreme
Speaker Wire: Each enclosure has 12" un-terminated speaker
leads (tinned bare wire at the end). The included speaker wire is connected using
the included weather resistant wire nuts.
Speaker Magnets: Because the magnets will affect the boat's
compass, you should avoid mounting the speakers closer than three feet from the
compass. If necessary, a marine installer should be able to help correct any
Mounting Options: There are two options for mounting the 131
Marine Speakers. If the enclosure can be mounted from behind the mounting surface,
the opening can be smaller (5-3/8"), generally offering a more sturdy mount.
If the enclosure can't be mounted from behind the mounting surface, it must pass
through the opening. In this case, the hole must be larger (approximately
7-1/4"). Once the enclosure is behind the mounting surface, the included
mounting flange is secured to the enclosure, then to the mounting surface, both
with the included screws.