Peavey Quadra 10 User Manual
Frequency response, 1 meter
on-axis, swept-sine in anechoic
environment:
74 Hz — 18 kHz (±3 dB)
Usable low frequency limit
(-10 dB point):
57 Hz
Power handling:
Full Range:
250 W continuous
500 W program
1,000 W peak
Sound pressure level, 1 Watt,
1 meter in anechoic environment:
Full Range:
96.0 dB SPL, (2.83 V input)
Maximum sound pressure level
(1 meter):
Full Range:
120.0 dB SPL continuous
126.0 dB SPL peak
Radiation angle measured at -6 dB
point of polar response:
500 Hz — 1.6 kHz:
Horiz. 120
o
±25
o
Vert. 115o±20
o
1.6 kHz — 5 kHz:
Horiz. 90o±5
o
Vert. 70o±10
o
5 kHz — 16 kHz:
Horiz. 80
o
±10
o
Vert. 45o±10
o
Directivity factor, Q (Mean):
8.88 ±4.65
Directivity index, Di (Mean):
8.89 dB ±2.04 dB
Transducer complement:
Low frequency section:
1x 10" woofer, vented
10" long throw heavy-duty woofer
High frequency section:
1x 1" exit/34 mm voice coil
compression driver 14XT
™
on a
CD horn
Box tuning frequency:
Low frequency section:
75 Hz
Harmonic distortion:
1% rated power
2nd Harmonic:
100 Hz: 0.94%
1 kHz: 0.23%
3rd Harmonic:
100 Hz: 2.50%
1 kHz: 0.95%
10% rated power
2nd Harmonic:
100 Hz: 2.36%
1 kHz: 1.36%
3rd Harmonic:
100 Hz: 1.06%
1 kHz: 2.18%
Crossover frequency (internal
passive):
Low Frequency — Mid Frequency:
2.2 kHz
Time offset:
Low Frequency: 0.00 ms
High Frequency: Horn spatially
aligned ms
Impedance (Z):
Full Range:
Nominal: 8.0 Ω
Minimum: 6.7 Ω
Input connections:
Screw terminal strip (one pair) for fullrange inputs
SPECIFICATIONS
Quadra™10
Available in
Black and White
Enclosure materials and finish:
1/4" high impact polypropylene finished
in black textured molded surface
Mounting provisions:
(12) 1/4"-20 threaded mounting points,
four each top, rear and bottom.
Stand mounting via molded-in mount of
the standard 1-3/8" diameter and four
rubber feet for floor use.
Dimensions (H x W x D):
Front:
18.75 in. x 14.00 in. x 13.19 in.
486 mm x 356 mm x 335 mm
Rear:
16.69 in. x 8.00 in. x 13.9 in.
424 mm x 203 mm x 335 mm
Net weight:
31 lbs. (14.1 kg)
Features:
• Quadratic Throat Geometry horn
• 500 W program, 1000 W peak
• Sound Guard™II tweeter protection
• 10" long throw heavy-duty woofer
• 14XT
™
1.4" titanium compression
driver
• Top handle and bottom stand mount
• Top, rear and bottom flying point
inserts
Description
The Quadra™ 10 is an injectionmolded, two-way speaker system,
engineered in the AA tradition to provide
superior performance from a compact and
durable package. The enclosure is made
from very high impact, injection-molded
polypropylene in a trapezoidal shape, with
extensive ribbing and bracing, and the grills
utilize perforated metal protected by a high
quality vinyl coating process, and has an
integral foam inner layer for environmental
protection.
The two-way system is comprised of a
10" long throw heavy-duty woofer, and a
water-resistant treated cone and dust cap
for superior environmental stability. The high
frequencies are handled by a 14XT
™
1.4"
titanium diaphragm compression driver,
coupled to a 1" Quadratic Throat Geometry
horn, molded integral to the cabinet. This
horn provides outstanding dispersion
coupled with a well-controlled pattern, and a
smooth, even response.
Utilizing Quadratic Throat Horn
™
technology, under US patent 6,059,069, the
horn has lower distortion than many popular
CD horn geometries.
2
110
100
Amplitude Response (1W 1m On-Axis)
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
Input connection to the system is
made via screw terminal strip (one pair) for
full-range inputs.
The internal passive crossover
features Sound Guard
™
II tweeter protection
circuit, an advanced topology crossover with
high performance components, to provide
high power handling and reliability. Peavey’s
proprietary high-frequency driver protection
circuitry, Sound Guard, provides long and
medium-term driver overload protection
without impairing musical transients or
dynamics. The crossover provides driver
roll-off and protection, as well as driver EQ
for the woofer and horn; the sum total is a
crystal clear and very smooth response.
High-quality, reliable crossover components
include polypropylene capacitors, and high
current inductors and input connectors. The
optimal integration of the crossover with the
selected drivers results in a smooth
frequency response from 74 Hz to 18 kHz.
Despite its compact dimensions, this
enclosure can put out some very serious
sound levels, and take 500 Watts program
of clean amplifier power, resulting in an
outstanding amount of clean coverage with
amazing clarity.
Frequency response
This measurement is useful in
determining how accurately a given unit
reproduces an input signal. The frequency
response of the Quadra 10 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 Quadra 10 combine to give a smooth
frequency response from 74 Hz to 18 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 is 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 Quadra 10 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 full-range 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.
130
120
110
100
90
80
dB SPL (re 20 Pa)
70
60
50
20 50 100 200 500 1k 2k 5k 10k 20k
2nd Harmonic
3rd Harmonic
Harmonic Distortion : 10% Rated Power
Frequency (Hz)
130
120
110
100
90
80
dB SPL (re 20 Pa)
70
60
50
20 50 100 200 500 1k 2k 5k 10k 20k
2nd Harmonic
3rd Harmonic
Harmonic Distortion : 1% Rated Power
Frequency (Hz)
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.
Architectural and Engineering
Specifications
The loudspeaker system shall have an
operating bandwidth of 74 Hz to 18 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 250 Watts, maximum program
power of 500 Watts and a peak power
input of at least 1,000 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 18.75 inches
high by 14.00 inches wide by 13.19 inches
deep. The weight shall be 31 pounds.
The loudspeaker system shall be an
Architectural Acoustics model Quadra 10.
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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