Shure Pro Master 701 User Guide

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

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 wallor 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.

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 . .A701C, Protective Slip-On Cover with Cable Pocket, A112D, Wall-Mount Swivel and Tilt Bracket, A102A, 70-volt Transformer

LEGEND	LEGEND
......1000 HZ

TYPICAL POLAR PAlTERNS

FIGURE 3

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 installations, 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 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 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 "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 speakers 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 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 60°, the energy in the high frequencies 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