Dimensions:
Inches
1.938
5.00
A
B
C
D
E
F
13.00
21.00
4.00
0.281 x 4
10.44
10.19
G
H
Figure 1: Dimensions
Directivity
Beamwidth
The axial directivity factor Rθ(formerly Q) of the HP1240 horn
was computed at each one-third-octave center frequency from
the horizontal/vertical polars. The graph in Figure 2 illustrates
this data over the range 500 Hz to 20 kHz. The axial frequency
response of the HP1240 with a particular driver is in close
correspondence to that driver’s power response above 500
Hz.
A plot of the HP1240’s 6-dB-down total included beamwidth
angle is shown in Figure 3 for each one-third-octave center
frequency. The horizontal beamwidth is maintained at 120°
(+20°, -40°) over the range of 500 Hz to 20 kHz. Vertical
beamwidth control occurs only above 1.5 kHz because of
the relatively short vertical dimension of the horn’s mouth.
Figure 2: Directivity vesus Frequency
Figure 3: 6-dB-Down Beamwidth versus Frequency
USA
12000 Portland Ave South, Burnsville, MN 55337, Phone: 952-884-4051, FAX: 952-884-0043
Canada
Germany
France
Australia
Hong Kong
Japan
Singapore
Mexico
UK
705 Progress Avenue, Unit 46,Scarborough, Ontario, Canada, M1H2X1,Phone: 416-431-4975, 800-881-1685, FAX: 416-431-4588
Hirschberger Ring 45, D94315, Straubing, Germany, Phone: 49 9421-706 0, FAX: 49 9421-706 287
Parc de Courcerin, Alle Lech Walesa, Lognes, 77185 Marne La Vallee, France, Phone: 33/1-6480-0090, FAX: 33/1-6480-4538
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
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
5-3-8 Funabashi, Setagaya-ku, Tokyo, 156-0055 Japan, Phone: +81 (0) 3-5316-5020, FAX: +81 (0) 3-5316-5031
3015A Ubi Rd 1, 05-10, Kampong Ubi Industrial Estate, Singapore 408705, Phone: 65-746-8760, FAX: 65-746-1206
Av. Parque Chapultepec #66-201, Col. EI. Parque Edo. Mex. 53390, Phone: (52) 5358-5434, FAX: (52) 5358-5588
4, The Willows Centre, Willow Lane, Mitcham, Surrey CR4 4NX, UK, Phone: 44 181 640 9600, FAX: 44 181 646 7084
U.S.A. and Canada only.
For customer orders, contact the Customer Service department at
00/392-3497 Fax: 800/955-6831
For warranty repair or service information, contact the Service
Repair department at 800/685-2606
8
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
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.
www.electrovoice.com Telex Communications, Inc. www.telex.com
© Telex Communications, Inc. 02/2001
Part Number 38109-951 Rev A
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