Performance Series: The
Thunder 5500 woofer is part of the MTX "Performance" series, which also
includes the Thunder 4500 and Road Thunder series.
Cone Design: The woofer uses a concave, multi-layer mica-filled polypropylene cone with an expanded poly cone dust cap for better thermal management and
increased reliability at high Sound Pressure Levels (SPL).
NBR Surrounds: The
surrounds are made of NBR (Nitrile Butadiene Rubber). The surrounds are stitched
to the cones, providing added strength and durability under high SPL. NBR has
the added benefit of being resistant to ozone and UV rays for extreme
durability. The surround geometry maximizes excursion without sacrificing cone
Stamped Steel Basket: This
woofer has a 16-gauge stamped steel basket, designed to support the magnet
structure and prevent buckling.
Terminals: The woofer features
a pair of heavy-duty chrome push terminals which can accept single or dual
banana plugs, pin connectors or up to 8-gauge speaker wire.
Spider: The Thunder 5500 woofer
uses a Nomex/Polycotton spider with integrated tinsel leads. The spider
materials allow for high excursion without spider or tinsel lead fatigue.
Spider Plateau Venting: Heat
from the voice coil is vented through metal-mesh covered vents that surround the
back of the spider. As the woofer travels back and forth, cool air is pulled in
and heated air is pushed out.
Asymmetrical Linear Drive System (ALDS):
The Asymmetrical Linear Drive System consists of a flat, progressive spider that
improves suspension and an extended vented pole piece that smoothes out the
cone's linear motion. The result is high output and low distortion.
Voice Coil: Designed for high
power handling and large linear excursion, the woofer's 1-3/4" voice coil is
wound onto a high-temperature former with 428°
Strontium Ferrite Magnet: The
strontium ferrite magnet yields a highly efficient speaker. The magnet features
a rubber ring for protecting the motor structure and cosmetics.
Enclosure Recommendations: For
the best possible sound quality where space is a premium, MTX recommends using a
sealed enclosure. For excellent sound quality with increased output compared to
sealed enclosures (3dB or more), MTX recommends using a vented enclosure.
Recommended Sealed Box
Volume: The sealed box size recommended by MTX has an internal volume
of 0.75 cu/ft.
Recommended Vented Box
Volume: The vented box size recommended by MTX has a net internal
volume of 1.25 cu/ft with a slotted port. The port slot dimensions are 12" high,
2" wide, and 20-1/2" long.
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