Shure Pro Master 701 User Guide
--
222 HARTREY AVE., EVANSTON. IL. 60204 U.S.A.
DATA
AREA CODE 3121866-2200 CABLE: SHUREMICRO
TWX:
910-231-0048 TELEX: 72-4381
OPERATION AND SERVICE INSTRUCTIONS
SHEET
MODEL
mmmm
701
TM
SPEAKER SYSTEM
DESCRIPTION
The Shure Model 701 PRO MASTERTM Speaker System
-a wide-range, high efficiency, lightweight, portable,
two-way speaker system-is an ideal companion unit to
Shure's Model 700 PRO MASTER Power Console or
similar high-power amplifiers. The Model 701 provides
high SPL sound reinforcement of wide frequency range
program material in every location from the largest auditoriums to the most intimate clubs. The speaker system
consists of a 15-inch woofer in a front-ported bass-reflex
cabinet and a high-frequency horn and driver combination with an adjustment for either a 120" or
tal dispersion angle. The newly designed high power,
high-frequency driver, manufactured exclusively by
Shure, has a high-flux-density gap (more than 16,000
gauss) and a fatigue-resistant, high-temperature-tolerant
diaphragm and coil assembly.
The 701 has a built-in passive high-frequency LC
crossover network. The speaker system can easily be
converted to biamplified operation. Below the 2,000 Hz
crossover frequency, the crossover network rolls off at
18 dB per octave, providing the proper acoustic match
and protecting the high-frequency driver. In addition, an
overload protection circuit safeguards the high-frequency
driver against damage from extremely high level signals.
The low-frequency woofer rolls off acoustically above
2600 Hz.
The 701 system has a frequency response of 50 to
15,000 Hz and an impedance of 8 ohms. The system is
designed to operate with amplifiers capable of delivering
up to 150 watts continuous to an
The 701 is constructed of 15.9 mm
covered in scuff-resistant black vinyl. The black fabric
grille is rugged, cleanable, and easily removable and replaceable. The corners of the cabinet are equipped with
steel protectors. The 701 weighs only 26.4 kilograms
(58 Ib) and can be easily carried by grasping the cabinet
at the top and sides of the horn. Proper lifting techniques
&ohm load.
60" horizon-
(%
in.) wood and
should be observed when handling any equipment of this
size and weight.
A heavy-duty, 15m (50 ft), 18-gauge, rubber-jacketed
connecting cable with phone plugs is supplied with the
speaker. A rugged vinyl slip-on protective cover with a
cable pocket is available as Model
A701C.
SPECIFICATIONS
Power Rating
Impedance
Frequency Response
Crossover Frequency
Sound Pressure
Level (SPL)
Phasing (Polarity)
High Frequency
Section
Low Frequency
Section
Horizontal Distribution
Vertical Distribution
Directivity Factor
R,
(Q)
Environmental:
Operating
Temperature
Storage
Temperature
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.
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.
. .
.
.Maximum recommended ampli-
fier output to 8 ohms: 150
watts continuous, 34.6 Vrms,
55V peak
.8 ohms nominal (see Figure 1)
.
.50 Hz to 15 kHz (see Figure 2)
.
.2,000 Hz; high frequency: 18 dB/
octave
. . .
.EIA rating: 53 dB at 9.2m (30 ft)
from 1 milliwatt, equivalent to
102 dB at lm (3.3 ft) with
watt input
. .
.
.Positive voltage on phone jack
tip produces positive sound
pressure
.120° or 60° (adjustable) radial
horn, with high-power driver
.
.
.15-inch woofer
,120" or 60" (see Figure
.
.
.
90"
.
. .
.6.6 at 2 kHz with 120" horn
angle; 10 with
. . . .
-7 to 43°C (20 to 110°F)
.
.
.
-
29 to 71 "C
rolloff
(-
3)
60" horn angle
20 to 160°F)
1-
Copyright
27A1584
1980,
(TE)
Shure
Brothers
Inc.
Printed in
Patent
U.S.A.
pending.
Connectors
Cable
.........
.............
TYPICAL IMPEDANCE CURVE
TYPICAL FREQUENCY RESPONSE
Overall Dimensions
(including feet)
Weight
Construction
Optional Accessories
.............
......
....
........
LEGEND LEGEND
1000
HZ
TYPICAL POLAR PAlTERNS
.Two parallel-wired phone jacks
..15m (50 ft), 18-gauge, rubber-
jacketed, with phone plugs
FREQUENCY
IN
FIGURE
HERTZ
1
FIGURE 2
.702 mm H x 584 mm W x 402
mm D (27-5/8 in. x 23 in. x
15-13/16 in.)
.26.4 kg (58 Ib)
.15.9 mm (5/8 in.) wood, black
vinyl covering, black fabric
grille, steel corner protectors,
plastic feet
. .
A701 C, Protective Slip-On Cover
with Cable Pocket,
Wall-Mount Swivel and Tilt
Bracket,
former
FIGURE
A102A, 70-volt Trans-
3
A112D,
INSTALLATION
General
Maximum coverage for source-oriented installations is
generally obtained with the speakers on both sides of the
sound
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.
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.
A112D Wall Mount Swivel Bracket is designed to support
the 701 for wall
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.
source and as far forward as possible. Each
If it is desirable to elevate the 701, adequate support
For greater elevations, the optional accessory Model
mounting only. It is important to note
WARNING
It is extremely important that both the mounting
surface and the mounting hardware are adequate to
support the weight of the speaker. Inadequate support 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 dispersion pattern. It is recommended that the horn angles
be set for
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 circumstances that previously required separate kinds of speakers to ensure adequate coverage.
Adjust the angle by turning the knob in the mouth of
the horn so that
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 speakers are employed to cover individual sectors of a very
large hall or outdoor stadium.
Judicious
use of equalization or feedback filters in the sound system 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
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 maximum intelligibility for speech and singing voices and in
60" for stacked speakers.
"60" or "120" is in the detented vertical
speaker/microphone placement and/or the
60°, the energy in the high fre-
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