SPECSP E A V E Y E L E C T R O N I C S
SP™ 3G
Sound Reinforcement Enclosure with Sound Guard™ HF Protection System
SPECIFICATIONS
Frequency Response, 1 Meter
On-Axis, Swept-Sine in Anechoic
Environment:
54 Hz to 17 kHz
Low-Frequency Cut-Off (-3 dB point):
54 Hz
Usable Low-Frequency Limit (-10 dB point):
47 Hz
Power Handling:
Full-Range:
350 W continuous (52.9V RMS)
700 W program
1,400 W peak
Bi-amp Low:
350 W continuous (52.9 V RMS)
700 W program
1,400 W peak
Bi-amp High:
150 W continuous (34.6 V RMS)
300 W program
600 W peak
Sound Pressure Level, 1 Watt, 1
Meter in Anechoic Environment:
Full-Range: |
99 dB (2.8 V) |
Bi-amp Low: |
100 dB (2.8 V) |
Bi-amp High: |
99 dB (2.8 V) |
Maximum Sound Pressure Level (1 meter):
Full-Range:
125 dB continuous
131 dB peak
Bi-amp Low:
126 dB continuous
132 dB peak
Bi-amp High:
120 dB continuous
127 dB peak
Radiation Angle Measured at -6 dB
Point of Polar Response:
500 Hz to 1.6 kHz:
Horizontal: 122° ±-15°
Vertical: 152° ±-38°
1.6 kHz to 5 kHz: Horizontal: 79° ±21° Vertical: 83° ±22°
5kHz to 16 kHz: Horizontal: 87° ±10° Vertical: 45° ±4°
Directivity Factor, Q (Mean):
8 ±4.3
Directivity Index, Di (Mean):
8.3 dB ±2.8 dB
Transducer Complement:
1505-8 KADT Black Widow® woofer 6.5" Pro mid-range driver
22XT compression driver
Box Tuning Frequency:
58 Hz
Crossover Frequency (internal passive):
800 Hz
Minimum Recommended Active Crossover Frequency and Slope for Bi-amping:
800 Hz at 18 dB/octave
Time Offset:
0.14 mS (delay Lows)
Impedance (Z):
Full-Range Nominal: |
8 Ω |
Full-Range Minimum: |
5.3 Ω |
Lows Nominal: |
8 Ω |
Highs Nominal: |
8 Ω |
Input Connections:
Two paralleled 1/4" phone jacks for full-range
One 1/4" phone jack for bi-amp low One 1/4" phone jack for high and mid bi-
amp
Enclosure Materials & Finish:
3/4" plywood enclosure covered with black carpet and protective polymer corners
Expanded metal grille to protect the mid and low drivers
Mounting Provisions:
One SA-1 stand mount on bottom of enclosure.
Dimensions (H x W x D):
33.50" x 21.50" x 22.50"
(85.1 cm x 54.6 cm x 57.1 cm) Rear width 14.25" (36.1 cm)
®
NET WEIGHT:
95 lbs. (43.2 kg)
FEATURES
•1505-8 KADT Black Widow® woofer
•6.5" Pro mid-range driver
•22 XT compression driver
•Sound Guard high-frequency
protection circuit
• Trapezoidal enclosure design
DESCRIPTION
The SP 3G is a full-range 3-way speaker system engineered for high performance and versatility. Useful for sound reinforcement, monitoring, public address and musical playback. The system is comprised of a 15" Black Widow woofer with Kevlar-impregnated cone, a 6.5" professional mid-range driver, and a 22XT compression driver coupled with a CH 3 constant directivity horn.
This unit can be driven in a fullrange or bi-amp mode by simply plugging into the desired jack on the input plate. The SP 3G has a trapezoidal shaped box, rather than a rectangular shaped box, that allows arrays to be constructed much more easily. This shape also greatly reduces the build-up of standing waves on the inside of the enclosure. This ensures a minimum of mid-bass and mid-range coloration of the reproduced sound due to the cabinet. The SP 3G is constructed of 3/4" plywood and is covered with Peavey's durable black carpet. Polymer corners are also a part of the unit to provide added protection to the enclosure. A powder-coated, expanded metal grille covers the lower part of the front of the enclosure to protect the midand low-frequency drivers from unforeseen accidents.
Sound Guard, Peavey's proprietary circuit for high-frequency driver protection, has been included as a integral part of the crossover for the SP 3G. The input signal is routed through the Sound Guard circuit in both full-range and bi-amp modes of operation. When the highfrequency drive level to the SP 3G exceeds a predetermined threshold, the Sound Guard circuit is engaged. This subtly decreases the signal going to the 22XT so that it will not be damaged due to long-term overpowering. Short duration transients will not be attenuated by Sound Guard and have the possibility to damage the 22XT. The Sound Guard circuit is a dynamic circuit
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Amplitude Response |
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90 |
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80 |
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Figure 1 |
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Impedance |
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Z 20 |
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Figure 2 |
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Frequency (Hz) |
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360 |
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300 |
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180 |
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140 |
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Beamwidth |
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80 |
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Figure 3 |
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Frequency (Hz) |
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Q & Directivity Index
100 |
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Q |
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Di |
10 |
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Figure 4 |
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Frequency (Hz) |
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