Features
• Quasi three-way, full-range
SR system
• Rx
™
22 compression driver with
ferrofluid cooling
• Two 15” BWX Black Widow
®
4” VC woofer
• 2,000 Watts program, 4,000
Watts peak
• Patented Quadratic Throat
Waveguide
™
technology
• Asymmetrical horn aims the
sound down 10° (at the
audience, not over their heads)
• Sound Guard
™
III tweeter
protection
• Full-range inputs include a
Neutrik
®
Speakon
®
four-pin jack
and two 1/4” phone jacks
• Bi-amp capability via internal
wiring jumper
• Trapezoidal Baltic birch
enclosure, 11% lighter
than SP 4X
Description
The new SP
4 incorporates two
of the new Quadratic Throat
Waveguides and an enclosure
made from Baltic birch plywood.
The SP 4 is a Quasi three-way
speaker system comprised of two
15” Black Widow BWX SF series
woofer with a Kevlar
®
/Carbon Fiber-
impregnated cones, and an Rx
22
compression driver loaded onto a
constant directivity waveguide.
The SP 4 has a trapezoidal-shaped
enclosure, which reduces the
buildup of standing waves inside
the enclosure to minimize mid-
bass and mid-range coloration.
It is constructed of nine-ply
Baltic birch and covered with a
durable black carpet. Use of the
Baltic birch plywood provides an
enclosure that is 11% lighter than
the previous SP 4X. The enclosure
corners are reinforced with metal
corners, and a black powder-
coated, perforated metal grille
covers the lower half of the system
to protect the woofer from external
damage.
The two-way system consists of the
following driver components: two
15” Black Widow BWX SF series
woofers with Kevlar/Carbon Fiber-
impregnated cones and dust caps.
The woofer section is capable of
over 1,000 Watts of continuous
power handling (AES Std 2-1984).
The woofers can handle a lot of
sheer power. The high frequencies
are handled by a 2” Rx22 titanium
diaphragm compression driver
utilizing ferrofluid cooling.
This superb driver is coupled
to a Quadratic Throat constant
directivity horn (U.S. Patent
#6,059,069) to provide smooth,
even response, low distortion and
good high frequency dispersion.
This horn has an asymmetrical
vertical polar response, aiming the
main energy lobe down 10 degrees
so it is aimed at the audience
instead of over their heads.
This reduces ceiling reflections,
ensuring greater clarity and gain
before feedback. The Rx22 driver
features the Radialinear Planar
Phase Correction System (U.S.
Patent #6,064,745), which provides
a smoother and extended high
frequency response.
Full-range input connection
to the system is made via two
1/4” phone jacks and a four-pin
Neutrik in parallel, and bi-amping
flexibility is provided via an internal
jumper that can be accessed by
unscrewing and removing the
input cup. The internal passive
crossover features the Peavey-
exclusive Sound Guard protection
circuit for the tweeter and an
advanced topology crossover with
high performance components
to provide high power handling
and reliability. Sound Guard
provides long- and medium-term
driver overload protection without
impairing musical transients or
dynamics on either the mid-range
or the tweeter when the system
is used full range or when it is bi-
amped. The crossover provides
driver roll-off and protection as
well as driver EQ for the woofer and
horn for a clean, clear and smooth
response. High quality, reliable
crossover components include
polypropylene capacitors and high
current inductors. The optimal
integration of the crossover with
the selected drivers results in a
smooth frequency response from
52 Hz to 17 kHz.
Despite its compact dimensions,
this system can produce very high
sound levels and handle 2,000
Watts program power, resulting
in high articulation and long-term
reliability.
SPECIFICATIONS SP
™
4
