Peavey SP 1G User Manual
P E A V E Y E L E C T R O N I C S
SPECS
SP™ 1G
Sound Reinforcement
Enclosure with
Sound Guard
™
44XT
™
SPECIFICATION
Frequency Response, 1 Meter
On-Axis, Swept-Sine in Anechoic
Environment:
63 Hz to 19 kHz
Low Frequency Cut-Off (-3 dB point):
63 Hz
Usable Low Frequency Limit
(-10 dB point):
50 Hz
Power Handling:
Full-Range:
450 W continuous (60V RMS)
900 W program
1,800 W peak
Bi-amp Low:
350 W continuous (52.9 V RMS)
700 W program
1,400 W peak
Bi-amp High:
80 W continuous (25.3 V RMS)
160 W program
320 W peak
Sound Pressure Level, 1 Watt, 1
Meter in Anechoic Environment:
Full-Range: 99 dB (2.8 V)
Bi-amp Low: 101 dB (2.8 V)
Bi-amp High: 110 dB (2.8 V)
Maximum Sound Pressure Level
(1 meter):
Full-Range:
121 dB continuous
133 dB peak
Bi-amp Low:
121 dB continuous
135 dB peak
Bi-amp High:
124 dB continuous
140 dB peak
Radiation Angle Measured at -6 dB
Point of Polar Response:
500 Hz to 1.6 kHz:
Horizontal: 96° ±13°
Vertical: 91° ±21°
S
1.6 kHz to 5 kHz:
Horizontal: 81° ±6°
Vertical: 61° ±18°
5 kHz to 16 kHz:
Horizontal: 56° ±18°
Vertical: 39° ±7°
Directivity Factor, Q (Mean):
15.7 ±12.5
Directivity Index, Di (Mean):
11.0 dB ±2.7 dB
Transducer Complement:
One 1505-8 KADT 15" Black Widow
woofer
One 44XT™ compression driver loaded
with a CH® 7 constant directivity horn
Box Tuning Frequency:
56 Hz
Crossover Frequency (internal
passive):
1,100 Hz
Minimum Recommended Active
Crossover Frequency and Slope for
Bi-amping:
1,200 Hz at 18 dB/octave
Time Offset:
0.70 ms (delay Lows)
®
Impedance (Z):
Full-Range Nominal: 8 Ω
Full-Range Minimum: 5.7 Ω
Lows Nominal: 8 Ω
Highs Nominal: 8 Ω
Input Connections:
Two paralleled 1/4" phone jacks for
full-range input
One 1/4" phone jack for bi-amp low-
frequency input
One 1/4" phone jack for bi-amp high-
frequency input
Enclosure Materials & Finish:
3/4" plywood enclosure covered with black
carpet and protective polymer corners
Expanded metal grille to protect the low-
frequency driver
Mounting Provisions:
One SA®-1 stand mount on bottom of
enclosure.
Dimensions (H x W x D):
33.75" x 19" x 20"
(85.7 cm x 48.3 cm x 50.8 cm)
13" rear width (33 cm)
Net Weight:
id
h(
)
95 lbs. (43.2 kg)
FEATURES
• 1505-8 KADT Black Widow® woofer
• 44XT™ compression driver
• Trapezoidal enclosure design
• SA-1™ stand mount
DESCRIPTION
The SP™ 1G is a step up to a
higher performance loudspeaker
system within the SP line of enclosures. It is a two-way loudspeaker
consisting of a 15" Black Widow
woofer and a 44XT™ compression
driver loaded with a CH® 7 constant
directivity horn.
This unit can be driven in fullrange or bi-amp mode simply by
plugging into the desired jack on the
input plate. The trapezoidal design
of the enclosure allows arrays to be
constructed much more easily than
when using a rectangular shaped
box. This shape also greatly
reduces the buildup of standing
waves on the inside of the enclosure. This ensures a minimum of
mid-bass and midrange coloration
of the reproduced sound due to the
cabinet. The SP™ 1G is constructed
of 3/4" plywood and 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 low-frequency
driver from unforeseen accidents.
Sound Guard 44XT™, a version
of Peavey’s proprietary highfrequency driver protection circuit
designed especially for the 44XT™,
has been included as an integral
part of the crossover for the
SP™ 1G. The input signal is routed
through the Sound Guard 44XT
circuit in both full-range and bi-amp
modes of operation. When the highfrequency drive level to the SP™ 1G
exceeds a predetermined threshold,
the Sound Guard 44XT™ circuit is
engaged. This is achieved at
approximately 90% full-rated power
with most program material. The
effect that this has is to
decrease the signal level going
to the 44XT™ by about 6 dB so that
it will not be damaged due to long
term (thermal) overpowering. Short
duration transients will not be
attenuated by Sound Guard 44XT
and have the possibility to damage
the 44XT™.
®
™
Amplitude Response (1W 1m On-Axis)
110
100
90
80
dB SPL (re 20 Pa)
70
60
20 50 100 200 500 1k 2k 5k 10k 20k
Figure 1
Frequency (Hz)
Impedance
100
50
30
20
Z
)
(
10
5
3
2
1
20 50 100 200 500 1k 2k 5k 10k 20k
Figure 2
Frequency (Hz)
Beamwidth
360
300
180
140
Degrees
100
t
80
60
40
Beamw
30
20 50 100 200 500 1k 2k 5k 10k 20k
Figure 3
Horizontal
Vertical
Frequency (Hz)
Q & Directivity Index
100
Q
10
™
1
20 50 100 200 500 1k 2k 5k 10k 20k
Figure 4
Frequency (Hz)
20
Di
10
0
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