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.
Woofers: The Alpine Type-R
series coaxial speakers feature woofer cones made of hybrid layered-pulp with
mica coating for great bass response. For durability and superior linearity, the
woofers have rubber surrounds.
Swivel Tweeters: The speakers
are equipped with 1" (25mm) silk ring-dome tweeters for greater detail and
bright, crisp highs. These tweeters can swivel to improve off-axis response in
less-than-ideal installations. You can aim the tweeter by hand for best high
frequency response at your listening position.
Motor Structure: The
High-performance Linear Drive Motor structure features a large magnet that is
almost as big as the voice coil diameter. Its dual radial magnet and twin gap,
combined with a square, edge-wound voice coil, gives the diaphragm linear
movement over a much greater range. This design allows the speaker to be
faithful to the input signal even during high excursion, for accurate musical
reproduction and deep bass.
Speaker Rings: Two rings are
included with the speakers that are used to properly align the grilles, when
mounted to the top of a door panel or rear deck. If the speakers are being
mounted behind the door panel (using the existing OEM grille), the rings are not
needed. Note: Using the rings decreases the top mounting depth by
OEM Adapters: The SPR-17C comes
with two pairs of OEM adapter rings. One pair is for standard 6-1/2" applications and select GM/Chrysler
applications, while the other pair works with certain Honda OEM applications.