Peavey SP 3G User Manual
P E A V E Y E L E C T R O N I C S
SPECS
SP™ 3G
Sound Reinforcement
Enclosure with
Sound Guard
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°
™
HF
1.6 kHz to 5 kHz:
Horizontal: 79° ±21°
Vertical: 83° ±22°
5 kHz 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:
20 50 100 200 500 1k 2k 5k 10k 20k
Frequency (Hz)
30
40
60
80
100
140
180
300
360
Beamwidth (Degrees)
Beamwidth
Vertical
Horizontal
Figure 3
20 50 100 200 500 1k 2k 5k 10k 20k
Frequency (Hz)
70
80
90
100
110
120
dB SPL (re 20 Pa)
Amplitude Response (1W 1m On-Axis)
Figure 1
20 50 100 200 500 1k 2k 5k 10k 20k
Frequency (Hz)
1
10
100
Q & Directivity Index
Q
Figure 4
20
10
Di
0
20 50 100 200 500 1k 2k 5k 10k 20k
Frequency (Hz)
1
2
3
5
10
20
30
50
100
Impedance
Z
(
)
Figure 2
95 lbs. (43.2 kg)
FEATURES
• 1505-8 KADT Black Widow
• 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
mid- and 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
®
woofer
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