Peavey Impulse 1012 User Manual

compact, weather-resistant package. The
enclosure utilizes high-impact polypropy-
lene in an injection-molded plastic trape-
zoidal shape, along with a coated perforat-
ed metal grille to offer a cosmetically ele-
gant yet durable system.
The two-way system includes a 12"
Black Widow
®
woofer with a Kevlar
®
impregnated cone and a specially treated
surround, cone and dust cap for excellent
weather resistance. The RX
™
22 compres-
sion driver features a 2" titanium
diaphragm, a patented phase plug
(U.S. Patent 6,064,745), and is coupled
to an extremely smooth and well con-
trolled constant directivity horn, with a
coverage pattern of 90 degrees by 45
degrees that is molded into the enclosure.
Input connection to the system is made
via 1/4" phone jacks (2) or 4-pin Neutrik
®
Speakon
®
connectors. Provisions for
biamplification are made through a 4-pin
Neutrik
®
switching jack. The internal pas-
sive crossover features Sound Guard
™
to
protect the tweeter, and utilizes high per-
formance components and an advanced
topology crossover to provide high power
handling and a smooth yet clear response.
The optimal integration of the crossover
with the selected drivers results in a
smooth frequency response from 75 Hz to
18 kHz.
The free-flow vented cabinet offers
mounting point inserts top and bottom as
well as a molded-in stand adapter for
maximum utility and ease of use.
FREQUENCY RESPONSE:
This measurement is useful in deter-
mining how accurately a given unit repro-
duces an input signal. The frequency
response of the Impulse 1012 (8 ohm) 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
Impulse 1012 (8 ohm) combine to give a
smooth frequency response from 75 Hz -
18 kHz.
DIRECTIVITY:
Beamwidth is derived from the -6 dB
points from the polar plots (Figure 3)
which are measured in a whole space
anechoic environment. Q and Directivity
Index are plotted for the on-axis measure-
ment position. These are specifications
that provide a reference to the coverage
characteristics of the unit. These parame-
ters provide insight for proper placement
and installation in the chosen environ-
ment. The blending of the components of
the Impulse 1012 (8 ohm) exhibit a desir-
able beamwidth and directivity (Figure 3
and 4) suitable for sound reinforcement
applications.
3
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 6
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 5
3rd Harmonic
2nd Harmonic
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.

Peavey Impulse 1012 Specifications

General

Brand	Peavey
Model	Impulse 1012
Category	Speaker System
Language	English