SPECSP E A V E Y E L E C T R O N I C S
SP™ 1G
Sound Reinforcement Enclosure with Sound Guard™ 44XT™
SPECIFICATIONS
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°
1.6 kHz to 5 kHz:
Horizontal: 81° ±6° Vertical: 61° ±18°
5kHz 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 lowfrequency input
One 1/4" phone jack for bi-amp highfrequency input
Enclosure Materials & Finish:
3/4" plywood enclosure covered with black carpet and protective polymer corners
Expanded metal grille to protect the lowfrequency 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:
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™.
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Amplitude Response |
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80 |
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70 |
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Figure 1 |
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Impedance |
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Figure 2 |
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Frequency (Hz) |
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Beamwidth |
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300 |
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180 |
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Beamwidth |
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Figure 3 |
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Q & Directivity Index |
100 |
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Q |
Di |
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Figure 4 |
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Frequency (Hz) |
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