Shure 709 User Guide

Optional Accessories . .A709C, Protective Slip-On Cover with Cable Pocket; A112D, Wall-Mount Swivel and Tilt Bracket; A102A, 70-volt Transformer

FREQUENCY IN HERTZ

TYPICAL IMPEDANCE CURVE

FIGURE 1

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 center of the speaker from the last rows of the audience area.

If it is desirable to elevate the 709, 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 20.4 kg (45 Ib) weight of the speaker.

For greater elevations, the optional accessory Model A112D Wall Mount Swivel Bracket is designed to support the 709 for wall mounting only. It is important to note that the 709 is not designed for mounting by simple chains or cables to the cabinet top or sides. If the 709 must be supported by chains or cables, encircle or cradle it.

W A R N I N G

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

81.7kg (180 Ib). Actual weight of the speaker is

20.4kg (45 Ib).

TYPICAL FREQUENCY RESPONSE

FIGURE 2

HOOKUP

Amplifiers

The 709 is designed for use with the Shure 700 Series Power Consoles and similar amplifiers having the following maximum power output capabilities.

LEGEND		LEGEND
----- 500	Hz	............

TYPICAL POLAR PAllERNS

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 wallor ceiling-mounted units) or upward (for floor-standing

8 ohms

4 ohms

(55V peak)

Speaker Wiring

Fifteen meters (50 ft) of cable is supplied with each 709 Speaker System. For convenient attachment, a straight phone plug and a right-angle phone plug are provided. Connect either end to the back of the speaker and to the Power Consoie amplifier. The supplied cable is 18 gauge (No. 18 AWG) and can be used for cable runs of up to 15m (50 ft) between the speaker and the amplifier. If cable runs longer than 15m are required, use the following table to determine the correct wire gauge.

Maximum
Distance From
Power Console
Amplifier	Wire Gauge		Recommended Cables
15m (50 ft)	AWG	18	Belden #8460, #8461,
			#9470, #8542
30m (100 ft)	AWG	16	Belden #8470, #8471,
			# 8472
60m (200 ft)	AWG 14		Belden #8473