Signal levels exceeding 130% rated signal voltage can
damage the speaker. Consequently, an incorrect tap con-
nection may cause speaker damage. This means that if a
25V tap is selected when a 70.7V amplifier is being used,
speaker damage may result. Therefore, be sure to select
the proper taps for the amplifier voltage/input power
level combination being used.
2 W
1 W
1/2 W
1/4 W
84
81
78
75
UL
Reverberant
(dBA @ 10 ft.)
2 W
1 W
1/2 W
1/4 W
87
84
81
78
Anechoic
(dBA @ 10 ft.)
Installation
All wiring must be installed in compliance with the
National Electrical Code (NEC) and applicable local codes
as well as special requirements of the authority having
jurisdiction, using the proper wire size. This also includes
all applicable NFPA Standards, ANSI/UL 1480, UL 1971 and
NEC 760.
Electrical
1. Connect the speaker/strobe as shown in Figure 1. Keep
in mind that even though the speaker and strobe are a
single mechanical unit, they are electrically independent
and require separate power sources.
NOTE:
Do NOT loop electrical wiring under terminal
screws. Wires connecting the device to the control
panel must be broken at the device terminal con-
nection in order to maintain electrical supervision.
NOTE:
Supply power for strobe must be continuous for
proper operation.
2. See Figure 2 as an example of how to select a
1
⁄
4
Watt
input when a 25 volt amplifier is being used. Notice that
the header, SW1, has two shunts. One shunt is used to
select either 25 or 70.7 volts input. The other shunt is
used to select input power of
1
⁄
4
,
1
⁄
2
, 1 or 2 Watts. Table 1
lists the UL reverberant and anechoic output sound lev-
els for each power tap on the SP2 series speaker/strobes.
Figure 1. Electrical connections:
Figure 2. Voltage and Power Selection:
25.0V
70.7V
2W
1W
1/2W
1/4W
25.0V
70.7V
2W
1W
1/2W
1/4W
CORRECT
SW1
SW1
INCORRECT
TO NEXT
STROBE OR EOL
INPUT FROM
POWER SUPPLY
INPUT FROM
AMPLIFIER
TO NEXT
SPEAKER OR EOL
STROBE
SPEAKER
Table 1. Sound levels for each transformer
power tap:
CAUTION
DC FWR DC FWR DC FWR
50 61 43 60 38 60
56 65 49 64 44 62
78 84 67 82 58 72
145 170 123 159 102 141
169 220 140 191 115 174
15
15/75
30
75
110
AVERAGE CURRENT (mA)
24V Models
20V
24V
30V
DC FWR DC FWR DC FWR
135 204 135 208 135 185
150 199 150 207 150 198
183 201 183 219 183 216
350 440 340 460 330 480
460 560 450 570 420 620
PEAK CURRENT (mA)
24V Models
20V
24V
30V
DC FWR DC FWR DC FWR
97 129 116 152 147 198
97 135 116 164 147 211
97 129 116 152 147 198
190 240 230 280 290 380
190 230 220 290 290 370
IN RUSH CURRENT (mA)
24V Models
20V
24V
30V
Candela
Table 2. Strobe current draw measurements:
D690-01-00
2
I56-1368-005R
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