wheelock ST-H15, ST-H30 INSTALLATION INSTRUCTIONS

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INSTALLATION INSTRUCTIONS

HORN SPEAKER WITH MULTI-TAP TRANSFORMER

Use this product according to this instruction manual. Please keep this instruction manual for future reference.

MODELS: ST-H15-B & ST-H30

GENERAL:

Horn speakers should be used in large and/or noisy locations. They are weatherproof and may be used indoors or outdoors. The
setting of the variable transformer tap selector switch should be set to provide a sound output of at least

6dB for paging, and 3dB for
background music above the background noise everywhere in the paging zone. However, the horn speaker's volume should not be set
so high as to cause discomfort to those closest to the horn. In some cases, use of multiple horns set at lower volume provide better
sound coverage, than one horn set at full volume. Horns should be mounted at least 15 feet above the floor, and angled downward.

NOTE: All CAUTIONS and WARNINGS are identified by the symbol

. All warnings are printed in bold capital letters.

WARNING: READ THESE INSTRUCTIONS CAREFULLY. FAILURE TO COMPLY WITH ANY OF THE
FOLLOWING INSTRUCTIONS, CAUTIONS AND WARNINGS COULD RESULT IN IMPROPER APPLICATION,
INSTALLATION AND/OR OPERATION OF THESE PRODUCTS IN AN EMERGENCY SITUATION, WHICH COULD
RESULT IN PROPERTY DAMAGE, SERIOUS INJURY OR DEATH TO YOU AND/OR OTHERS.

SPECIFICATIONS:

Wattage Selector Switch Settings:

Table 1.

ST-H15-B ST-H30

Setting 100V 70V 25V Setting 100V 70V 25V

1 2.0W 1.0W Not Used 1 4.0W 2.0W 0.3W
2 4.0W 2.0W Not Used 2 7.5W 3.8W 0.5W
3 7.5W 3.8W 0.48W 3 15.0W 7.5W 0.9W
4 15.0W 7.5W 0.94W 4 30.0W 15.0W 1.9W
5 Not Used 15.0W 1.8W 5 Not Used 30.0W 3.8W
6 Not Used Not Used 7.5W 6 Not Used Not Used 6.9W
7 Not Used Not Used 15.0W 7 Not Used Not Used 13.9W

1) Power Handling Capacity (RMS): 15 Watts (ST-H15-B), 30 Watts (ST-H30) 2) Sound Dispersion: 110 Degrees 3) Constant
Voltage Line: 25V, 70V or 100V 4) Frequency Response: 375 - 10,000Hz (@ Full Rated Output) 5) Sound Level At Rated Output
(ST-H15-B): 122dB (SPL-On Axis, @ 1 Meter, @ Rated Power) 6) Sound Level At Rated Output (ST-H30): 125dB (SPL-On Axis,
@ 1 Meter, @ Rated Power)

7) Dimensions: 8-15/16"Dia. X 10"Dia.

CAUTION: Do not place switch in settings marked "not used". Failure to comply with these restrictions may cause damage to
components and will void the warranty.

Copyright 1993, 1994, 1995, 2000 Wheelock, Inc. All rights reserved.

P82595 C

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INSTALLATION INFORMATION:

There is a slotted shaft, underneath the cable entrance interface adapter, which operates a 7-position selector switch. Remove the
interface adaptor and set the switch for the desired wattage at the specified speaker line voltage (25V, 70V or 100V). Adjust the
switch by turning the slotted shaft until the end of the slot which is opposite the flat on the shaft
wattage provided at each selector number is shown on the decal affixed to the rear of the housing.

points to the desired number. The

Use tables and the graphs shown below as a general guide to determine horn spacing, area coverage, and sound pressure level.

Table 2.

Ambient Noise

Level

(dBA)

Quiet To Moderate

50-74
Noisy
75-85

Very Noisy

89-96 *

Area Coverage

Per Horn

(Sq. Ft.)

5,000

2,500

1,250

Effective

Forward Projection

(Ft.)

128

64

32

Spacing

Side to Side Front to Rear

40 Ft.

40 Ft.

40 Ft.

120 Ft.

60 Ft.

30 Ft.

NOTES:

1. Mounting Height is 15-20 Feet.

2. Typical Mounting Angle (to Vertical) is 60 degrees.

* For very noisy locations (above 96dB), consult Wheelock for applications assistance.

ST-H15-B

Distance from Horn (Ft. on Axis)

ST-H30

Distance from Horn (Ft. on Axis)

CAUTION: The total system wattage requirement should not exceed 85% of the system amplifiers rated output. The total
system wattage requirement is the summation of the wattage tap selections of all system speakers and horns.

P82595 C

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