Overview: The FOCAL Polyglass SB27V1 is a bass-reflex subwoofer
enclosure with a 11" loaded FOCAL Polyglass 27V1 subwoofer and a flared port. This
subwoofer enclosure provides high dynamic bass and high power handling in order
to reach extremely high sound levels.
Bass Reflex Enclosure: The
FOCAL SB27V1 features a bass-reflex enclosure with a front-firing flared port.
The flared port is designed to reduce air noise. The enclosure is made of 5/8"
MDF and features internal damping material for added rigidity and less vibration
noise. The enclosure also features a removable cloth grille to protect the
woofer's cone. In addition, the subwoofer enclosure utilizes nickel-plated
spring-post terminals for easy connection of your speaker wire (up to 10AWG).
The FOCAL SB27V1 presents a 4-ohm load at its speaker terminals. The subwoofer
enclosure features four rubber feet and comes with a mounting kit which consists
of two nylon straps, four metal brackets and eight screws to secure the
enclosure in your vehicle.
11" Subwoofer (Polyglass 27V1):
The FOCAL Polyglass SB27V1 features a loaded, front-firing 11" SVC 4-ohm FOCAL Polyglass
subwoofer. The FOCAL Polyglass 27V1 features an 11" polyglass cone
woofer for a wide, dynamic frequency response of 36-500Hz that offers great bass
and mid-bass sound. The uniform deposit of hollow-glass microballs over the
entire cellulose pulp cone greatly increases its rigidity without adding
significant weight, so you get a woofer that is durable, yet efficient, and
sounds great. The woofer also features a NBR (Nitrile Butyl Rubber) surround for
long excursion, deep bass, and added durability to promote long life. The
Polyglass 27V1 woofer features a 4 layer, 2.0" diameter, 4-ohm, aluminum
voice-coil former for higher power handling capabilities up to 250 watt (RMS)
and 500 watt (Peak). The Polyglass 27V1's Louvered Cooling System is a
self-regulated ventilation system which increases air cooling, prevents heat
build-up, and provides optimized reliability with performance consistency. The
Polyglass 27V1 woofer features a120mm (4.75"), 25mm (1") thick ferrite magnet
for higher sensitivity up to 90dB (2.83V/1m). In addition, the FOCAL Polyglass 27V1
features a die-cast Zamak chassis which is a rigid, non-magnetic, and
non-resonant frame that provides a strong, reliable structure for the woofer.
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