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www.earthquakesound.eu | www.earthquakesound.dkSpecifications are subject to change without notice
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High Gauss Ceramic Magnet
The brute magnetic force in the Pro-X is supplied by an oversized ceramic magnet.
This high Gauss magnet concentrates immense magnetic flux on the voice coil
resulting in stellar efficiency and tight chest slamming low frequency response.
Designed with a bumped back extended pole piece for added excursion potential.
This also protects the voice coil from bottoming out in case of transient overload.
Legendary ChassisLegendary Chassis
Any seasoned pro audio tradesman will recognize the chassis and smile. Yes it is 30+
years old, but from a performance viewpoint - a better one has yet to be made.
This efficiently transports air around the voice
coil and reduces the air resistance on the
moving voice coil itself.
TheThe result is a remarkably capable cooling
system that compared to a traditional pole
venting scheme, reduces temperatures by 40
percent. All without adding acoustic artifacts
or cost to the equation.
PWT Voice Coil
The PWT (Parallel Winding Technology) voice coil is a quite simple but effective
method for approaching esoteric edge-wound voice coils in efficiency and thermal du-
rability. Ordinary voice coils are wound with a single wire applied to the former x
number of turns.
The PWT coil uses two thinner wires applied to the former in parallel (wound side by
side) x number of turns. This significantly increases surface area for improved thermal
rigidity while keeping the same impedance as if regular single strand wire had been
used. At a fraction of the cost of edge-wound, the PWT voice coil is instrumental in
keeping the price down and performance up.
L-RAE Motor Cooling Geometry
Pro-XPro-X features the L-RAE (Large Radial Air Emitter)
cooling scheme, and is the first Earthquake product
to do so. We had intended to use our patented TCT
(Turbine Cooled Technology); however, TCT was
developed for heavy, long stroke woofers and was
not ideal for the quick, taunt and agile characteristics
of the Pro-X woofer.
L-RAEL-RAE is comprised of large unrestricted passages
offering zero resistance to the moving air. A large
drilled out pole piece with above spider side venting
channels is combined with oversized radial cooling
passages, matching the diameter of the voice coil.
INTRODUCTION / SPECIFICATIONSINTRODUCTION / SPECIFICATIONS
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