Peavey SP 4X - Manual (Page 3)

Standard 2-1984. Using audio band 20 Hz
to 20 kHz pink noise with peaks of four
times the RMS level, this strenuous test
signal assures the user that every portion
of this system can withstand today’s high
technology music. This rating is contingent
upon having a minimum of 3 dB of
amplifier headroom available.
Harmonic distortion
Second and third harmonic distortions
vs. frequency are plotted in figures 5 and
6 for two power levels. Ten percent (10%)
of rated input power and either one
percent (1%) of rated input power or one
Watt, whichever is greater. Distortion is
read from the graph as the difference
between the fundamental signal
(frequency response) and the desired
harmonic. As an example, a distortion
curve that is down 40 dB from the
fundamental is equivalent to 1% distortion.
Mounting
Warning: This unit is not designed for
overhead suspension
Architectural and Engineering
Specifications
The loudspeaker system shall have an
operating bandwidth of 51 Hz - 16 kHz.
The nominal output level shall be 98.0 dB
when measured at a distance of one
meter with an input of one Watt. The
nominal impedance shall be 4.0 Ohms.
The maximum continuous power handling
shall be 1,000 Watts, maximum program
power of 2,000 Watts and a peak power
input of at least 4,000 Watts, with a
minimum amplifier headroom of 3 dB. The
nominal radiation geometry shall be 90
degrees in the horizontal plane and 40
degrees in the vertical plane. The outside
dimensions shall be 49.00 inches high by
21.00 inches wide by 22.75 inches deep.
The weight shall be 125 pounds. The
loudspeaker system shall be a Peavey
model SP 4X.
This product is manufactured under U.S.
Patent 6,064,745.
20 50 100 200 500 1k 2k 5k 10k 20k
Frequency (Hz)
40
50
60
70
80
90
100
110
dB
SPL
(re
20
Pa)
Harmonic Distortion : 1% Rated Power
Figure 4
3rd Harmonic
2nd Harmonic
20 50 100 200 500 1k 2k 5k 10k 20k
Frequency (Hz)
50
60
70
80
90
100
110
120
dB
SPL
(re
20
Pa)
Harmonic Distortion : 10% Rated Power
Figure 3
3rd Harmonic
2nd Harmonic