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.
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8
3
9
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1
B
0
0
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5
C
5
7
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8
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1
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0
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4
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8
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8
Directivity
The axial directivity factor R
θ
(formerly Q) of the HP64 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 630 Hz to 20 kHz. The axial frequency
response of the HP64 with a particular driver is in close
correspondence to that driver’s power response above 1.8
kHz.
Beamwidth
A plot of the HP64’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 60°
(+30°, -10°) over the range of 1.7 kHz to 20 kHz. Vertical
beamwidth is maintained at 40° (+20°, -10°) over the range
1.8 kHz to 20 kHz.
Figure 3: 6-dB-Down Beamwidth versus Frequency
Figure 2: Directivity vesus Frequency
Figure 1: Dimensions
© Telex Communications, Inc. 02/2001
Part Number 38109-954 Rev A
USA
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