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.
Woofer: The Boston Acoustics HSi 470 uses a 6-1/2" DCD
(Deep Channel Design) copolymer woofer. The DCD woofer uses a deeply grooved pole
plate that enables the voice coil to travel farther for greater output without
Tweeter: The HSi 470 uses a 1" Kortec dome tweeter.
Kortec is a silky fabric saturated on the underside with a proprietary stiffening
agent. Because the inside surface of the dome is ultra stiff, the tweeter tracks
the signal with ease and produces an excellent transient attack. Simultaneously,
the soft, self-dampening top layer eliminates unwanted resonance, so the sound
is smooth and articulate.
Inputs: Spring loaded posts will accept banana plugs (single
or dual) or bare wire up to 12 gauge.
Moisture Resistant: The HSi 470 is well suited for humid
environments like the kitchen or bathroom. Make sure they are positioned so
that moisture cannot collect inside them. They are not designed for locations
where they will be submerged.
Placement: Because you can control the direction of the high
frequencies with the pivoting tweeter, you can mount these in-ceiling speakers
almost anywhere. For optimum results, place the speakers 8 to 12 feet apart so
they form a triangle with the listening area.
Installation: After an 8-7/8" diameter cutout is made
the speaker is installed into the opening and held into place with four integral
plastic mounting ears. The required depth to install the speaker is 4-3/4"
from the mounting surface (this includes the thickness of the drywall). Behind
the opening there must be a 1" clearance around the speaker to accommodate
the ears. The mounting wall material must be at least 1/4" thick for the
mounting ears to work.
Magnetic Grille: The grille is magnetically mounted for easy
Paintable: Both the frame and grille can be painted to match
the ceiling. A plastic paint mask is included to protect the speaker from being
painted as well.
Optional Bracket: The NCBR6 new-construction bracket (sold
separately) can be used to simplify installation in new construction.