Advertisement
Mounting:
8 Flying points (4 horizontal, 4 vertical),
1/2"-13 female thread.
Dimensions (H x W x D):
23" H x 16 1/2" W x 13 1/8" D
(rear width 16.1/2")
58.4 cm x 41.9 cm x 33.3 cm
(rear width 41.9 cm)
Net Weight:
54 lbs. (24.5 kg)
FEATURES
• Bi-amp capability
• High power handling
• Metal guard grille
• 10 gauge steel internal flying points
• 22XT
™
titanium dome compression
driver
• Grille color options
• 800 Hz crossover
DESCRIPTION
™
The new Impulse
1282 is a full range or
bi-ampable two-way enclosure designed
specifically for permanent installation. The
cabinet is constructed of 3/4" Poplar-faced
high-density plywood, or 18 mm, 13-ply all
Birch void-free plywood. The internal flying
points are reinforced with 10 gauge steel
bracing. The decorative and internal
protective grilles are permanently attached to
the enclosure.
The two-way system is comprised of a
heavy-duty 12" woofer, and a 22XT compres-
sion driver loaded into a CH 3 constant-
directivity horn. The frequency spectrum can
either be divided internally through the
enclosure's passive crossover operating at
about 800 Hertz, or through an external
active or passive crossover. In either case,
the input lead connection is made secure
through the use of screw terminal barrier
strips for bi-amp operation.
FREQUENCY RESPONSE
This measurement is useful in determining
how accurately a given enclosure reproduces
an input signal. The frequency response of
the Impulse 1282 is measured at 1 meter
using a 2.83 volt swept sine input. As shown
in Figure 1, the selected drivers in the
Impulse 1282 combine to give a smooth
frequency response from 60 Hz to 18 kHz.
DIRECTIVITY
Beamwidth and directivity factors are
derived from the -6 dB points from the polar
plots, which are measured in a whole-space
anechoic environment. These are specifica-
tions that provide a reference to the coverage
characterisitics of the enclosure. These
parameters provide insight for proper
enclosure placement and installation in the
chosen environment. The Impulse 1282
exhibits a desirable beamwidth and directivity
factor suitable for all high-level sound
reinforcement applications.
POWER HANDLING
There are many different approaches to
power handling ratings. Peavey rates this
speaker system's power handling using a
100 dB
90 dB
80 dB
50 Hz
100 Hz
100 ohm
3.16 ohm
10 ohm
3.16 ohm
50 Hz
100 Hz
Horizontal
320
160
80
40
125
200
315
500
100
160
250
400
20
10
5
Di
0
125
200
315
500
100
160
250
400
2
Frequency
200 Hz
500 Hz
1 kHz
2kHz
Impedance
200 Hz
500 Hz
1 kHz
2kHz
Vertical
800
1.25
2
3.15
630
1K
1.6K
2.5K
4K
800
1.25
2
3.15
5
630
1K
1.6K
2.5K
4K
Fig. 1
5 kHz
10 kHz
20 kHz
Fig. 2
5 kHz
10 kHz
20 kHz
Fig. 3
5
8
12.5
6.3K
10K
16K
Fig. 4
100
10
Q
1
8
12.5
6.3K
10K
16K
Advertisement
