Installation, Polar Response, Beamwidth

Installation

The base may be easily removed to simplify speaker installation by backing off the single wingnut to approximately the end of its bolt. Remove the base with a sliding motion. It is not necessary to completely remove either the wingnut or its bolt. Later, after the base is mounted, the speaker may be reinstalled on the base with a similar sliding motion, adjusted to any angular position, and the wingnut tightened.

Mounting the Base

The removable mounting base has three evenly-spaced holes on a 60.3

mm(2.38 in.) diameter circle. This diameter is small enough to be conveniently mounted on the cover of a standard 4-inch square or octagon electrical outlet box. The base may be used as a template. In addition, the base is slotted for mounting with 1/2-inch steel banding material. Banding tools and materials are available commercially and permit attachment to I-beams, pillars, or similar structural supports, where screwmounting is impractical. Finally, the base may also be attached to many structural supports with small C-clamps providing appropriate safety measures are observed.

Polar Response

The directional characteristics of the PA60 were measured by running a set of horizontal/vertical polar responses in Electro-Voice’s large anechoic chamber, at each one-third-octave center frequency. The test signal was one-third-octave pseudo-random pink noise centered at the indicated frequencies. The measurement microphone was placed 6.1 m (20 ft.) from the horn mouth, while rotation was about the waveguide geometric apexes. These axes of rotation are quite close to the apparent (acoustic) apexes across the frequency range of measurement. Errors attributable to the slight differences between the geometric and acoustic apexes are reduced to an inconsequential level by the relatively long, 20-foot measuring distance. The horn was suspended freely with no baffle. The polar plots shown in Figure 1 display the results of these tests. The center frequency is noted on each plot. The wider plot on each chart is the horizontal polar (–) and the narrower plot is the vertical polar (– – –).

Beamwidth

A plot of the PA60’s 6-dB-down total included beamwidth angle is shown in Figure 2 for each one-third-octave center frequency.

Frequency Response

Figure 3 shows the axial frequency response of the PA60. It was measured at a distance of 1 meter, using a swept sine wave.

	Figure 1
	PA60 Polar Response
USA	12000 Portland Ave South, Burnsville, MN 55337, Phone: 952-884-4051, FAX: 952-884-0043
Canada	705 Progress Avenue, Unit 46,Scarborough, Ontario, Canada, M1H2X1,Phone: 416-431-4975, 800-881-1685, FAX: 416-431-4588
Switzerland	Keltenstrasse 11, CH-2563 IPSACH, Switzerland, Phone: 41/32-331-6833. FAX: 41/32-331-1221
Germany	Hirschberger Ring 45, D94315, Straubing, Germany, Phone: 49 9421-706 392, FAX: 49 9421-706 287
France	Parc de Courcerin, Alle Lech Walesa, Lognes, 77185 Marne La Vallee, France, Phone: 33/1-6480-0090, FAX: 33/1-6480-4538
Australia	Unit 23, Block C, Slough Business Park, Slough Avenue, Silverwater, N.S.W. 2128, Australia, Phone: 61/2-9648-3455, FAX: 61/2-9648-5585
Hong Kong	Unit E & F, 21/F, Luk Hop Industrial Bldg., 8 Luk Hop St., San PO Kong, Kowloon, Hong Kong, Phone: 852-2351-3628, FAX: 852-2351-3329
Japan	2-5-60 Izumi, Suginami-ku,Tokyo, Japan 168, Phone: 81-3-3325-7900, FAX:81-3-3325-7789
Singapore	3015A Ubi Rd 1, 05-10, Kampong Ubi Industrial Estate, Singapore 408705, Phone: 65-746-8760, FAX: 65-746-1206
Mexico	Av. Parque Chapultepec #66-201, Col. EI. Parque Edo. Mex. 53390, Phone: (52) 5358-5434, FAX: (52) 5358-5588
UK	4, The Willows Centre, Willow Lane, Mitcham, Surrey CR4 4NX, UK, Phone: 44 181 640 9600, FAX: 44 181 646 7084
Africa, Mid-East	12000 Portland Ave South, Burnsville, MN 55337, Phone: 952-887-7424, FAX: 952-887-9212
Latin America	12000 Portland Ave South, Burnsville, MN 55337, Phone: 952-887-7491, FAX: 952-887-9212

www.electrovoice.com • Telex Communications, Inc. • www.telex.com

Figure 2

PA60 Beamwidth vs. Frequency

Figure 3

PA60 Frequency Response (1 watt at 1 meter)

U.S.A. and Canada only. For customer orders, contact the Customer Service department at 800/392-3497 Fax: 800/955-6831 For warranty repair or service information, contact the Service Repair department at 800/685-2606

For technical assistance, contact Technical Support at 866/78 AUDIO

Please refer to the Engineering Data Sheet for warranty information.

Specifications subject to change without notice.

Part Number 38109-845 Rev A

Electro-Voice PA60 specifications Installation, Polar Response, Beamwidth, Frequency Response

Models: PA60