vide ultra-high performance in a portable,
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 15"
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 controlled con-
stant directivity horn, with a coverage pat-
tern of 90 degrees by 45 degrees that is
molded into the enclosure. Input connec-
tion to the system is made via 1/4" phone
jacks (2) or 4-pin Neutrik
®
Speakon
®
con-
nectors. Provisions for biamplification are
made through a 4-pin Neutrick switching
jack. The internal passive crossover fea-
tures Sound Guard
™
to protect the tweet-
er, and utilizes high performance compo-
nents 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 60 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 1015 is mea-
sured 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 1015 8
ohm combine to give a smooth frequency
response from 60Hz - 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 1015 8 ohm exhibit a desir-
able beamwidth and directivity (Figure 3
and 4) suitable for sound reinforcement
applications.
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