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:
Low frequency section:
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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