Peavey SP 112MX User manual

SP™112MX
SPECIFICATIONS
Frequency response, 1 meter
on-axis, swept-sine in anechoic
environment:
120 Hz — 14 kHz (±3 dB)
Usable low frequency limit
(-10 d point):
73 Hz
Power handling:
Full Range:
500 W continuou
1,000 W program
2,000 W peak
Low Frequency Section:
500 W continuou
1,000 W program
2,000 W peak
High Frequency Section:
60 W continuou
120 W program
240 W peak
Sound pressure level, 1 Watt,
1 meter in anechoic environment:
Full Range:
100.0 dB SPL, (2.83 V input)
Low Frequency Section:
100.0 dB SPL, (2.83 V input)
High Frequency Section:
106.0 dB SPL, (2.83 V input)
Maximum sound pressure level
(1 meter):
Full Range:
125.0 dB SPL continuou
131.0 dB SPL peak
Low Frequency Section:
126.0 dB SPL continuou
132.0 dB SPL peak
High Frequency Section:
123.8 dB SPL continuou
129.8 dB SPL peak
Transducer complement:
Low Frequency Section:
1x 12 in. woofer, ealed
1208 SPS-8 BWX
High Frequency Section:
1x .875 in. exit/51 mm voice coil
compre ion driver on CD horn
RX™22 on a CH®-3
Harmonic distortion:
1% rated power
2nd Harmonic:
100 Hz: 1.66%
1 kHz: 0.49%
3rd Harmonic:
100 Hz: 0.63%
1 kHz: 0.44%
10% rated power
2nd Harmonic:
100 Hz: 4.05%
1 kHz: 2.13%
3rd Harmonic:
100 Hz: 2.67%
1 kHz: 0.52%
Crossover frequency (internal
passive):
Low Frequency — High Frequency:
1,350 Hz
Recommended active crossover
frequency region and slope:
Low Frequency — High Frequency:
1,600 Hz at 18 dB/octave
Time offset:
Low Frequency: 0.00 m
High Frequency: 0.27 m
Impedance (Z):
Full Range:
Nominal: 8.0 Ω
Minimum: 6.2 Ω
Low Frequency:
Nominal: 8.0 Ω
Minimum: 6.9 Ω
High Frequency:
Nominal: 8.0 Ω
Minimum: 7.1 Ω
Input connections:
2x 1/4 in. phone jack and 1x Neutrik®
NL4 Speakon®(biamp)
SPECS
PEAVEY ELECTRONICS

2
Enclosure materials and finish:
3/4" OSB fini hed in black carpet
Mounting provisions:
Thi unit i not de igned for overhead
u pen ion.
SA 1 tand mounted adaptor
Dimensions (H x W x D):
Front:
15.25 in. x 22.25 in. x 15.00 in.
387 mm x 565 mm x 381 mm
Net weight:
50 lb . (22.7 kg)
Features:
• Two-way, full range/biampable PA
enclo ure
• Sound Guard™HF driver protection
circuit
• RX™22 driver with a 2" titanium
diaphragm coupled to a CH®3
90° X 45° con tant-directivity horn
• 12" BWX Black Widow®with
Kevlar®cone and field-replaceable
ba ket
• SP™X erie cabinet with integral
tand adapter
• Neutrik®biamp jack
• 30oor 45obaffle angle
Description
The SP 112MX i both a co metic and
performance rede ign of the SP 112M
floor monitor loud peaker y tem. Thi
high power handling, two-way loud peaker
y tem i compri ed of a 12" BWX woofer
with a Kevlar impregnated cone and an
RX22 compre ion driver coupled to a
CH 3 con tant directivity horn. Thi unit
can be driven in full-range mode imply by
plugging into one of the two 1/4" phone
jack on the input plate. A Neutrik
Speakon®connector i provided a an
input for biamp operation. The unique
de ign of the enclo ure allow the baffle
to be angled at either 30° or 45° from the
floor. The SP 112MX i con tructed of 3/4"
OSB and covered with Peavey’ durable
black carpet. A powder coated expanded
metal grille cover the front of the
enclo ure to protect the driver from
unfore een accident . A tand mount
adapter i al o included in one of the end
of the enclo ure. Thi will allow it to be
u ed a a PA type loud peaker if needed.
Sound Guard III i the rede ign of
Peavey’ proprietary circuit for high
frequency driver protection for the new
RX22 compre ion driver. Thi i an
integral part of the cro over for the SP
112MX. The input ignal i routed through
the Sound Guard III circuit in both full-
range and biamp mode of operation.
When the high frequency drive level to the
SP 112 MX exceed a predetermined
thre hold, the Sound Guard III circuit i
engaged. The effect that thi ha i to
ubtly decrea e the ignal level going to
the RX22 o that it will not be damaged
due to longterm overpowering. Short
duration tran ient will not be attenuated
by Sound Guard III and have the
po ibility to damage the RX22. The
Sound Guard III circuit i a dynamic circuit
that will attenuate the ignal more the
larger the ignal i , very imilar to a
compre or. Thi i accompli hed through
the u e of a pecially elected,
dynamically re i tive light bulb. If the bulb
in your Sound Guard III hould ever burn
out a replacement may be obtained from
an Authorized Peavey Service Center.
However, if a Peavey replacement bulb i
not readily available, a Sylvannia SK3
bulb may be located at variou
loud peaker or electronic part tore .
Frequency response
Thi mea urement i u eful in
determining how accurately a given unit
reproduce an input ignal. The frequency
re pon e of the SP 112 MX i mea ured
at a di tance of 1-meter u ing a 1 Watt
(into the nominal impedance) wept- ine
input ignal. A hown in figure 1, the
elected driver in the SP 112MX combine
to give a mooth frequency re pon e from
120 Hz - 14 kHz.
Power Handling
There are many different approache
to power handling rating . Peavey rate
thi loud peaker y tem' power handling
u ing a full-range form of the AES
Standard 2-1984. U ing audio band 20 Hz
to 20 kHz pink noi e with peak of four
time the RMS level, thi trenuou te t
ignal a ure the u er that every portion
of thi y tem can with tand today' high
technology mu ic. Thi rating i contingent
upon having a minimum of 3 dB of
amplifier headroom available.
Harmonic Distortion
Second and third harmonic di tortion
v . frequency are plotted in figure 3 and
4 for two power level . Ten percent (10%)
of rated input power and either one
percent (1%) of rated input power or one
Watt, whichever i greater. Di tortion i
read from the graph a the difference
between the fundamental ignal
(frequency re pon e) and the de ired
harmonic. A an example, a di tortion
curve that i down 40 dB from the
fundamental i equivalent to 1% di tortion.
Mounting
Warning: Thi unit i not de igned for
overhead u pen ion.
20 50 100 200 500 1k 2k 5k 10k 20k
Frequency (Hz)
60
70
80
90
100
110
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
2
3
5
10
20
30
50
100 Impedance
Z
()
Figure 2

3
Architectural and Engineering
Specifications
The loud peaker y tem hall have an
operating bandwidth of 120 Hz - 14 kHz.
The nominal output level hall be 98.0 dB
when mea ured at a di tance of one
meter with an input of one Watt. The
nominal impedance hall be 8.0 Ohm .
The maximum continuou power handling
hall be 500 Watt , maximum program
power of 1,000 Watt and a peak power
input of at lea t 2,000 Watt , with a
minimum amplifier headroom of 3 dB. The
nominal radiation geometry hall be 45
degree in the horizontal plane and 90
degree in the vertical plane. The out ide
dimen ion hall be 15.25 inche high by
22.25 inche wide by 15.00 inche deep.
The weight hall be 50 pound . The
loud peaker y tem hall be a Peavey
model SP™112MX.
3 + 2 YEAR LIMITED WARRANTY
NOTE: For detail , refer to the
warranty tatement. Copie of
thi tatement may be obtained
by contacting Peavey Electronic
Corporation, P.O. Box 2898, Meridian,
Mi i ippi 39301-2898.
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

SP™112MX INPUT
Features and specifications subject to change without notice.
Peavey Electronics Corporation • 711 A Street • Meridian • MS • 39301
[phone] • FAX [phone] • www.peavey.com
©2001 Printed in the U.S.A. 4/01
80304856