Peavey SP 4 DATASHEET
SPECIFICATIONS SP™ 4
Box tuning frequency:
Low Frequency Section: 58 Hz
Crossover frequency
(internal passive):
Low frequency – High frequency
1800 Hz
Recommended Active Crossover
Frequency Region and Slope:
Low Frequency – High Frequency:
1800 Hz at 12 dB/octave
Time Offset:
Low Frequency: 0.0 ms
Mid/High Frequency: 0.48 ms
Impedance (Z):
Full Range:
Nominal: 4.0 Ω
Minimum: 3.4 Ω
Low Frequency:
Nominal: 4.0 Ω
Minimum: 3.2 Ω
Passive HF:
Nominal: 8.0 Ω
Minimum: 5.4 Ω
Frequency response, 1 meter on-axis,
swept-sine in anechoic environment:
52 Hz to 17 kHz (±3 dB)
Usable low frequency limit
(-10 dB point):
45 Hz
Power handling:
Full range:
1,000 Watts continuous
2,000 Watts program
4,000 Watts peak
Low frequency section:
1,000 Watts continuous
2,000 Watts program
4,000 Watts peak
High frequency section:
60 Watts continuous
120 Watts program
240 Watts peak
Sound pressure level, 1 Watt,
1 meter in anechoic environment:
Full range:
100.0 dB SPL (2.83 V input)
Low frequency section:
101 dB SPL (2.83 V input)
Mid/high frequency section:
107 dB SPL (2.83 V input)
Maximum sound pressure level
(1 meter):
Full range:
130 dB SPL continuous
136 dB SPL peak
Low frequency section:
131 dB SPL continuous
137 dB SPL peak
Passive mid/high frequency
section:
129 dB SPL continuous
135 dB SPL peak
Radiation angle measured at
-6 dB point of polar response:
90° horizontal by 40° vertical
The vertical main polar lobe is
angled down 10° with respect to
straight ahead being +10, -30°
Transducer complement:
Low frequency section:
2x 15" woofer, vented
1508-8 HE SF
High frequency section:
1x .875" exit /51mm voice coil
RX™ 22 compression driver
on an asymmetrical Quadratic
Throat CD horn
Input connections:
Full Range: two 1/4" phone jacks,
one Neutrik® four-pin Speakon® jack
& bi-amp capability provided via an
internal wiring jumper
Enclosure materials and finish:
Nine-ply Baltic birch plywood
finished in black carpet
Mounting provisions:
This unit is not designed for
overhead suspension
Built-in SA-1 stand-mount adapter
and four large rubber feet on bottom
for floor use
Dimensions (H x W x D):
Front:
48.75” x 20.75” x 23.00”
1238 mm x 527 mm x 584 mm
Rear:
48.75” x 12.88” x 23.00”
1238 mm x 327 mm x 584 mm
Net Weight:
113 Lbs. (51.4kg)
SPECIFICATIONS SP™ 4
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 Fiberimpregnated 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 midbass 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 powdercoated, 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 Peaveyexclusive 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 biamped. 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.
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