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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 866/78AUDIO

Please refer to the Engineering Data Sheet for warranty information.

Specifications subject to change without notice.

:

s

n

o

i

s

n

e

m

i

D

s

e

h

c

n

I

A

8

3

9

.

1

B

0

0

.

5

C

5

7

.

8

D

0

0

.

1

1

E

0

0

.

4

F

4

x

1

8

2

.

0

G

2

5

.

6

H

3

3

.

6

Directivity

The directional characteristics of the HP66 were measured
in Electro-Voice’s large anechoic chamber using a stock
Electro-Voice® DH1A. The test signal was one-third-octave
filtered pink-noise at the frequencies indicated. A full spherical
measurement system was used. All directional information
was measured at 6.1 meters (20 feet) from the horn.

Figure 3:  6-dB-Down Beamwidth versus Frequency

This shows the horizontal and vertical beamwidths. Beamwidth is the

angle at which the horizontal and vertical polar responses have

decreased in level by 6 dB when compared with the axial frequency

Figure 2:  Directivity vesus Frequency

This illustrates the total directivity of the HP66. The directivity factor R

θ

(Q) is the relative value at a point of the HP66 when compared to an

ideal spherical response. The directivity index Di is calculated by

D

i

=10log

10

R

θ

.

Figure 1:  Dimensions

© Telex Communications, Inc. 02/2001
Part Number 38109-958  Rev A

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

Germany

Hirschberger Ring 45, D94315, Straubing, Germany, Phone: 49 9421-706 0, 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

5-3-8 Funabashi, Setagaya-ku, Tokyo, 156-0055 Japan, Phone: +81 (0) 3-5316-5020, FAX: +81 (0) 3-5316-5031

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

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