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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.
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