Peavey Quadra 15 User manual

Frequency response, 1 meter on-
axis, swept-sine in anechoic
environment:
64 Hz to 18 kHz (±3 dB)
Usable low frequency limit
(-10 d point):
48 Hz
Power handling:
Full Range:
500 W continuous
1 000 W program
2 000 W peak
Low Frequency Section:
500 W continuous
1 000 W program
2 000 W peak
High Frequency Section:
60 W continuous
120 W program
240 W peak
Sound pressure level, 1 Watt,
1 meter in anechoic environment:
Full Range:
100 dB SPL (2.83 V input)
Low Frequency Section:
100 dB SPL (2.83 V input)
High Frequency Section:
110 dB SPL (2.83 V input)
Maximum sound pressure level
(1 meter):
Full Range:
126 dB SPL continuous
134 dB SPL peak
Low Frequency Section:
127 dB SPL continuous
133 dB SPL peak
High Frequency Section:
128 dB SPL continuous
134 dB SPL peak
Radiation angle measured at -6 d
point of polar response:
500 Hz - 1.6 kHz:
Horiz. 95o± 15o
Vert. 100o± 20o
1.6 kHz - 5 kHz:
Horiz. 85o± 15o
Vert. 55o± 5o
5 kHz - 16 kHz:
Horiz. 90o± 5o
Vert. 45o± 5o
Directivity factor, Q (Mean):
9.48 ± 3.24
Directivity index, Di (Mean):
9.53 dB ± 1.43 dB
Transducer complement:
Low Frequency Section:
1x 15" woofer vented
1508 SPS Black Widow®
High Frequency Section:
.875 in. exit/51 mm voice coil
compression driver
RX™22 HF driver on a CD horn
ox tuning frequency:
Low Frequency Section:
58 Hz
Harmonic Distortion:
1% rated power
2nd Harmonic:
100 Hz: 0.81%
1 kHz: 0.14%
3rd Harmonic:
100 Hz: 0.20%
1 kHz: 0.42%
10% rated power
2nd Harmonic:
100 Hz: 2.36%
1 kHz: 0.63%
3rd Harmonic:
100 Hz: 1.07%
1 kHz: 0.61%
SPECIFICATIONS
Quadra™15
Available in
Black and White

Crossover frequency (internal
passive):
Low Frequency - High Frequency:
1 600 Hz
Recommended active crossover
frequency region and slope:
Low Frequency - High Frequency:
1 600 Hz at 12 dB/octave min.
Time Offset:
Low Frequency: 0.00 ms
High Frequency: Horn spatially
aligned ms
Impedance (Z):
Full Range:
Nominal: 8.0 Ω
Minimum: 6.0 Ω
Low Frequency:
Nominal: 8.0 Ω
Minimum: 6.4 Ω
High Frequency:
Nominal: 8.0 Ω
Minimum: 5.4 Ω
Input connections:
Screw terminal strip (one pair) paralleled
with 2x Neutrik®NL4 Speakon®.
1x Neutrik NL4S switching Speakon for
bi-amp inputs.
Enclosure materials and finish:
High-impact polypropylene with molded
in texture
Mounting provisions:
(12) 1/4"-20 threaded mounting points
four each top bottom and rear
Stand mounting via mold-in mount of the
standard 1-3/8" diameter and four rubber
feet for floor use
Dimensions (H x W x D):
Front:
28.50 in. x 21.25 in. x 17.25 in.
724 mm x 540 mm x 438 mm
Rear:
26.75 in. x 11.63 in. x 17.25 in.
679 mm x 295 mm x 438 mm
Net Weight:
56 lbs. (25.5 kg)
Features:
• Quadratic Throat Geometry Horn
• 1 000 W program 2 000 W peak
• SoundGuard™III tweeter protection
• 15" BWX Black Widow®4" VC woofer
• RX™22 two-inch titanium compression
driver
• Top bottom and rear flying point
inserts
• Multiple handles and bottom stand
mount
Description
The Quadra™15 is an injection-
molded two-way speaker system
engineered in the AA tradition to provide
2
20 50 100 200 500 1k 2k 5k 10k 20k
Frequency (Hz)
1
10
100 Q & Directivity Index
Q
Figure 4
20
10
Di
0
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
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)
30
40
60
80
100
140
180
300
360
Beamwidth (Degrees)
Beamwidth
Vertical
Horizontal
Figure 3

3
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
grilles 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
15" BWX Black Widow®woofer with a 4"
voice coil and a water-resistant treated
cone and dust cap for superior
environmental stability. Capable of over
500 W of continuous power handling (AES
Std 2-1984) the woofer can handle a lot of
sheer power. The high frequencies are
handled by an RX™22 two-inch titanium
diaphragm compression driver utilizing
ferrofluid 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. The RX22 driver utilizes the
Radialinear Planar Phase Correction
System under US Patent 6 064 745 which
provides smoother and extended high
frequency response.
Input connection to the system is made
via screw barrier terminal strip one plus
screw and one minus screw connection and
two 4-pin Neutrik®jacks connected in
parallel are provided for signal input and
daisy chaining capability. A 4-pin Neutrik
switching jack is provided for bi-amping
flexibility while maintaining superior signal
integrity.
The internal passive crossover features
Sound Guard™III 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
when the system is used full-range or when
it is bi-amped 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 extremely
high current inductors and input connectors.
The optimal integration of the crossover with
the selected drivers results in a smooth
frequency response from 64 Hz to 18 kHz.
Despite its compact dimensions for a
15" based enclosure this system can put
out some very serious sound levels and
take 1 000 Watts program of clean amplifier
20 50 100 200 500 1k 2k 5k 10k 20k
Frequency (Hz)
50
60
70
80
90
100
110
120
130
dB SPL (re 20 Pa)
Harmonic Distortion : 10% Rated Power
3rd Harmonic
2nd Harmonic
20 50 100 200 500 1k 2k 5k 10k 20k
Frequency (Hz)
50
60
70
80
90
100
110
120
130
dB SPL (re 20 Pa)
Harmonic Distortion : 1% Rated Power
3rd Harmonic
2nd Harmonic

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™15 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 15 combine
to give a smooth frequency response from
64 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 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 Quadra 15 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. 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 & engineering
specifications
The loudspeaker system shall have an
operating bandwidth of 64 Hz to 18 kHz.
The nominal output level shall be 99.0 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 500 Watts maximum program
power of 1 000 Watts and a peak power
input of at least 2 000 Watts with a
minimum amplifier headroom of 3 dB. The
nominal radiation geometry shall be 90
degrees in the horizontal plane and 45
degrees in the vertical plane. The outside
dimensions shall be 28.50 inches high by
21.25 inches wide by 17.25 inches deep.
The weight shall be 56 pounds. The
loudspeaker system shall be an
Architectural Acoustics model Quadra 15.
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
CAUTION! PEAVEY RECOMMENDS THE USE OF NEUTRIK™BRAND NL4FC PLUGS TO CONNECT TO THE BI-AMP
SWITCHING JACK ON THE CROSSOVER.
USE OF OTHER BRANDS OF PLUGS MAY CAUSE AMPLIFIER AND/OR SPEAKER DAMAGE!

-90o
-60o
-30o
0o
30o
60o
90o
200 Hz
-90o
-60o
-30o
0o
30o
60o
90o
315 Hz
-90o
-60o
-30o
0o
30o
60o
90o
500 Hz
-90o
-60o
-30o
0o
30o
60o
90o
800 Hz
-90o
-60o
-30o
0o
30o
60o
90o
1.25 kHz
-90o
-60o
-30o
0o
30o
60o
90o
1 kHz
-90o
-60o
-30o
0o
30o
60o
90o
1.6 kHz
-90o
-60o
-30o
0o
30o
60o
90o
2.5 kHz
-90o
-60o
-30o
0o
30o
60o
90o
2 kHz
-90o
-60o
-30o
0o
30o
60o
90o
250 Hz
-90o
-60o
-30o
0o
30o
60o
90o
400 Hz
-90o
-60o
-30o
0o
30o
60o
90o
630 Hz
Quadra™15
Horizontal Polar Patterns 6 d per Division
5

-90o
-60o
-30o
0o
30o
60o
90o
3.15 kHz
-90o
-60o
-30o
0o
30o
60o
90o
5 kHz
-90o
-60o
-30o
0o
30o
60o
90o
8 kHz
-90o
-60o
-30o
0o
30o
60o
90o
12.5 kHz
-90o
-60o
-30o
0o
30o
60o
90o
16 kHz
-90o
-60o
-30o
0o
30o
60o
90o
4 kHz
-90o
-60o
-30o
0o
30o
60o
90o
6.3 kHz
-90o
-60o
-30o
0o
30o
60o
90o
10 kHz
Quadra™15
Horizontal Polar Patterns 6 d per Division
6

0o
30o
60o
90o
-30o
-60o
-90o
200 Hz
0o
30o
60o
90o
-30o
-60o
-90o
315 Hz
0o
30o
60o
90o
-30o
-60o
-90o
500 Hz
0o
30o
60o
90o
-30o
-60o
-90o
800 Hz
0o
30o
60o
90o
-30o
-60o
-90o
1.25 kHz
0o
30o
60o
90o
-30o
-60o
-90o
1 kHz
0o
30o
60o
90o
-30o
-60o
-90o
1.6 kHz
0o
30o
60o
90o
-30o
-60o
-90o
2.5 kHz
0o
30o
60o
90o
-30o
-60o
-90o
2 kHz
0o
30o
60o
90o
-30o
-60o
-90o
250 Hz
0o
30o
60o
90o
-30o
-60o
-90o
400 Hz
0o
30o
60o
90o
-30o
-60o
-90o
630 Hz
Quadra™15
Vertical Polar Patterns 6 d per Division
7

0o
30o
60o
90o
-30o
-60o
-90o
3.15 kHz
0o
30o
60o
90o
-30o
-60o
-90o
5 kHz
0o
30o
60o
90o
-30o
-60o
-90o
8 kHz
0o
30o
60o
90o
-30o
-60o
-90o
4 kHz
0o
30o
60o
90o
-30o
-60o
-90o
6.3 kHz
0o
30o
60o
90o
-30o
-60o
-90o
10 kHz
0o
30o
60o
90o
-30o
-60o
-90o
16 kHz
0o
30o
60o
90o
-30o
-60o
-90o
12.5 kHz
Quadra™15
Vertical Polar Patterns 6 d per Division
8

9
Quadra™15 INPUT

10
NOTES:

11
NOTES:

Features and specifications subject to change without notice.
Peavey Electronics Corporation • 711 Street • Meridian • MS • 39301
[phone] • F X [phone] • http://aa.peavey.com
©2001 Printed in the U.S. . 8/01
80304830