Peavey ILS 1264 H User Manual
Frequency Response, 1 meter
on-axis, swept-sine in anechoic
environment:
63 Hz - 18.5 kHz (±3 dB)
Usable Low Frequency Limit
(-10 dB point):
48 Hz
Power Handling:
Full Range:
700 W continuous
1,400 W program
2,800 W peak
Low Frequency Section:
500 W continuous
1,000 W program
2,000 W peak
High Frequency Section:
100 W continuous
200 W program
400 W peak
Sound Pressure Level, 1 Watt,
1 meter in anechoic
environment
:
Full Range:
96.0 dB SPL, (2.83 V input)
Low Frequency Section:
97.0 dB SPL, (2.83 V input)
High Frequency Section:
109.0 dB SPL, (2.83 V input)
Maximum Sound Pressure Level
(1 meter):
Full Range:
124.5 dB SPL continuous
130.5 dB SPL peak
Low Frequency Section:
124.0 dB SPL continuous
130.0 dB SPL peak
High Frequency Section:
129.0 dB SPL continuous
135.0 dB SPL peak
Radiation Angle measured at
-6 dB point of polar response:
500 Hz – 1.6 kHz:
Horiz. 105o± 15
o
Vert. 115o± 15
o
1.6 kHz - 5 kHz:
Horiz. 60o± 10
o
Vert. 50o± 20
o
5 kHz - 16 kHz:
Horiz. 55o± 5
o
Vert. 30o± 5
o
Directivity Factor, Q (Mean):
16.18 ± 9.18
Directivity Index, Di (Mean):
11.13 dB ± 3.13 dB
Transducer Complement:
Low Frequency Section:
1x 12in. woofer, vented
1208-8 SPS
High Frequency Section:
1x 1.6 in. exit/100 mm voice coil
compression driver on Quadratic
Throat Waveguide
™
44 XT (w/o adapter) on a CH®642qt
Box Tuning Frequency:
Low Frequency Section:
55 Hz
Harmonic Distortion:
1% rated power
2nd Harmonic:
100 Hz: 3.22%
1 kHz: 0.52%
SPECIFICATIONS
ILS™1264H
3rd Harmonic:
100 Hz: 0.29%
1 kHz: 0.30%
10% rated power
2nd Harmonic:
100 Hz: 7.40%
1 kHz: 2.24%
3rd Harmonic:
100 Hz: 1.96%
1 kHz: 0.40%
Crossover Frequency (internal
passive):
Low Frequency - High Frequency:
1,900 Hz
Time Offset:
Low Frequency: 0.00 ms
High Frequency: 0.81 ms
Impedance (Z):
Full Range:
Nominal: 8.0 Ω
Minimum: 7.1 Ω
Low Frequency:
Nominal: 8.0 Ω
Minimum: 7.4 Ω
High Frequency:
Nominal: 8.0 Ω
Minimum: 8.3 Ω
Input Connections:
2x Neutrik®Speakon®NL4MD and
1x 5-position barrier strip
Enclosure Materials and Finish:
3/4 in. poplar plywood finished in
exterior grade hardened black paint
Mounting Provisions:
(12) 3/8"-16 threaded mounting
suspension points (2 each top,
bottom and back and 3 each sides)
Dimensions (H x W x D):
Front:
17.50 in. x 30.75 in. x 17.50 in.
445 mm x 781 mm x 445 mm
Rear:
11.88 in. x 30.75 in. x 17.50 in.
302 mm x 781 mm x 445 mm
Net Weight:
80 lbs. (36.4 kg)
Features
• 63 Hz to 18.5 kHz bandpass
• 4" diaphragm, 1.6" exit, ferrofluid
equipped high frequency
compression driver
• Patented Quadratic Throat
Waveguide
™
• Carefully tailored directivity
patterns
2
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
100
80
60
40
Beamwidth (Degrees)
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
3
• Flexible suspension provisions
• Robust power handling
capabilities
• Passive crossover included
• Bi-amplified crossover provisions
Applications
• Stadiums
• Arenas
• Multi-purpose facilities
• Cruise ships
• Theme parks
• Houses of worship
• Live music venues
• Hotel meeting rooms
• Conference facilities
• Theaters
• Auditoriums
• Civic centers
• Judicial facilities
• Gymnasiums
• Performing arts centers
Description
The new Peavey ILS 1264H
(horizontal) Loudspeaker System is a
two-way, vented low frequency
enclosure using a 12" low frequency
driver paired with a 60° (horizontal) by
40° (vertical) high frequency
waveguide. The HF section employs a
1.6 exit/100 mm voice coil compression
driver mounted on one of Peavey’s
revolutionary new Quadratic Throat
waveguides. The ILS 1264 has a full
range sensitivity of 96 dB SPL –
(1 Watt/1 meter) and a maximum output
of 130 dB at 1 meter (full range).
The Peavey ILS 1264 is a high
performance loudspeaker system for
use in demanding sound reinforcement
applications. The robust construction of
the ILS 1264 provides power handling
capacities of 700 W continuous, 1.4 kW
program and 2.8 kW peak (full range).
The unit may be operated using the
internal passive crossover or may be
biamplified. Twelve 3/8" x 16 threaded
mounting suspension points (2 each
top, bottom and back and 3 each sides)
allow a variety of suspension
configurations. Multiple units may be
mounted to form a vertical/horizontal
array [see limitations under mounting
instructions]. Both versions of the ILS
1264 are solidly constructed of 3/4"
void-free poplar plywood and finished
with an exterior grade hardened black
paint.
Harmonic Distortion : 10% Rated Power
120
110
100
90
80
70
dB SPL (re 20 Pa)
60
50
20 50 100 200 500 1k 2k 5k 10k 20k
Figure 5
Frequency (Hz)
2nd Harmonic
3rd Harmonic
Harmonic Distortion : 1% Rated Power
110
100
90
80
70
60
dB SPL (re 20 Pa)
50
40
20 50 100 200 500 1k 2k 5k 10k 20k
Figure 6
Frequency (Hz)
2nd Harmonic
3rd Harmonic
Frequency Response
This measurement is useful in
determining how accurately a given
unit reproduces an input signal. The
frequency response of the ILS 1264H
is measured at a distance of 1-meter
using a 1 Watt (into the nominal
impedance) swept-sine input signal.
As shown in figure 1, the selected
drivers in the ILS 1264H combine to
give a smooth frequency response
from 63 Hz - 18.5 kHz.
Directivity
Beamwidth is derived from the
-6 dB points from the polar plots (see
figure 3) which are measured in a
whole space anechoic environment.
Q and Directivity Index are plotted for
the on-axis measurement position.
These are specifications that provide
a reference to the coverage
characteristics of the unit. These
parameters provide insight for proper
placement and installation in the
chosen environment. The blending of
the components of the ILS 1264H
exhibit a desirable beamwidth and
directivity (figure 3 and 4) suitable for
sound reinforcement applications.
Power Handling
There are many different
approaches to power handling ratings.
Peavey rates this loudspeaker
system’s power handling using a fullrange form of the AES 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
Caution: Before attempting to
suspend this speaker, consult a
certified structural engineer. Speaker
can fall from improper suspension,
resulting in serious injury and property
damage. Other enclosures may be
suspended below one ILS 1264H.
However, the combined weight of
additional enclosures and all cables,
clamps and other hardware must not
exceed 320 pounds. The ILS 1264H
weighs 80 pounds and the maximum
combined weight suspended from the
uppermost mounting bracket
assemblies must not exceed 400
pounds. Maximum enclosure angle is
45
o
. Use only the correct mating
hardware. All associated rigging is the
responsibility of others.
Architectural and Engineering
Specifications
The loudspeaker system shall
have an operating bandwidth of 63 Hz
- 18.5 kHz. The nominal output level
shall be 96.0 dB when measured at a
distance of one meter with an input of
one Watt. The nominal impedance
shall be 8.0 Ohms. The maximum
continuous power handling shall be
700 Watts, maximum program power
of 1,400 Watts and a peak power
input of at least 2,800 Watts, with a
minimum amplifier headroom of 3 dB.
The nominal radiation geometry shall
be 60 degrees in the horizontal plane
and 40 degrees in the vertical plane.
The outside dimensions shall be
17.50 inches high by 30.75 inches
wide by 17.50 inches deep. The
weight shall be 80 pounds. The
loudspeaker system shall be an
Architectural Acoustics model ILS
1264H.
3 + 2 YEAR LIMITED
WARRANTY
NOTE: For details, refer to the
warranty statement. Copies of
this statement may be obtained
by contacting Peavey Electronics
Corporation, P.O. Box 2898, Meridian,
Mississippi 39301-2898.
4
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