Specifications

Connectors ......... .Two parallel-wired phone jacks
Cable
............. ..15m (50 ft), 18-gauge, rubber-
jacketed, with phone plugs
FREQUENCY IN HERTZ
TYPICAL IMPEDANCE CURVE
FIGURE
1
TYPICAL FREQUENCY RESPONSE
FIGURE 2
Overall Dimensions
(including feet)
.... .702 mm H x 584 mm W x 402
mm D (27-5/8 in. x 23 in. x
15-13/16 in.)
Weight
............. .26.4 kg (58 Ib)
Construction
........ .15.9 mm (5/8 in.) wood, black
vinyl covering, black fabric
grille, steel corner protectors,
plastic feet
Optional Accessories
. . A701 C, Protective Slip-On Cover
with Cable Pocket,
A112D,
Wall-Mount Swivel and Tilt
Bracket,
A102A, 70-volt Trans-
former
LEGEND LEGEND
1000 HZ ......
TYPICAL POLAR PAlTERNS
FIGURE 3
INSTALLATION
General
Maximum coverage for source-oriented installations is
generally obtained with the speakers on both sides of the
sound
source and as far forward as possible. Each
speaker is tilted slightly either downward (for wall- or
ceiling-mounted units) or upward (for floor-standing
units). The angle of tilt (assuming a single speaker to
each side of the sound source) should be such that you
can look into the throat of the horn from the last rows
of the audience area.
If it is desirable to elevate the 701, adequate support
for heights up to about one meter (three feet) can usually
be obtained using a sturdy table or bench. The surface
must be capable of supporting the 26.4 kg (58 Ib) weight
of the speaker.
For greater elevations, the optional accessory Model
A112D Wall Mount Swivel Bracket is designed to support
the 701 for wall
mounting only. It is important to note
that the 701 is not designed for mounting by simple
chains or cables attached to the cabinet top or sides. If
the 701 must be supported by chains or cables, encircle
or cradle it.
WARNING
It is extremely important that both the mounting
surface and the mounting hardware are adequate to
support the weight of the speaker. Inadequate sup-
port may result in a hazardous operating condition.
Whatever mounting means are employed, support
should be provided for a speaker static load of
105 kg (232 Ib). Actual weight of the speaker is
26.4 kg (58 Ib).
If two speakers are stacked for source-oriented instal-
lations, horn-to-horn mounting with horns angled apart
to cover separate areas will provide the best sound dis-
persion pattern. It is recommended that the horn angles
be set for
60" for stacked speakers.
Coverage Angles
The 701 Speaker System features a unique horn with
an adjustable horizontal dispersion pattern. The 120" or
60" angle adjustment provides unprecedented flexibility
that makes the 701 ideal in a wide variety of circum-
stances that previously required separate kinds of speak-
ers to ensure adequate coverage.
Adjust the angle by turning the knob in the mouth of
the horn so that
"60" or "120" is in the detented vertical
position. Use the 120" angle for coverage of short, wide
areas, in "short throw" applications. Use the 60" angle
for long, narrow areas, in "long throw" applications. The
60" position is also extremely useful when several speak-
ers are employed to cover individual sectors of a very
large hall or outdoor stadium.
Judicious
speaker/microphone placement and/or the
use of equalization or feedback filters in the sound sys-
tem will often relieve acoustic feedback. In addition,
narrowing the horizontal dispersion angle from 120" to
60" can be useful in remedying high-frequency feedback
conditions when, for instance, speakers on stage have
dispersion patterns that overlap the pickup areas of open
microphones.
With the horn set at
60°, the energy in the high fre-
quencies is concentrated in an area one half that of a
120" horn. This concentration causes an increase of
approximately 3 dB in the high-end response. The extra
high-end energy is extremely useful in providing maxi-
mum intelligibility for speech and singing voices and in