3
947776
NOISE
P-TEC SPEAKER PROJECTION DISTANCE
SOUND PRESSURE LEVELS AND WATTAGE SETTINGS FOR 70 VOLT SPK
LEVEL
IN dB
55 dB
56 dB
57 dB
58 dB
59 dB
60 dB
61 dB
62 dB
63 dB
64 dB
65 dB
66 dB
67 dB
68 dB
69 dB
70 dB
71 dB
72 dB
73 dB
74 dB
75 dB
76 dB
77 dB
SPL-76
.25 WATT
26
24
22
20
16
15
14
12
10
8
SPL-78
.50 WATT
24
22
20
16
15
14
12
10
8
SPL-80
1.0 WATT
24
22
20
16
15
14
12
10
8
SPL-83
2.0 WATT
24
22
20
16
15
14
12
10
8
SPL-86
4.0 WATT
24
22
20
16
15
14
12
10
8
MINIMUM
MOUNTING
HEIGHT
15 FT
10 FT
8 FT
P-TEC SPEAKERS ARE INTENDED FOR USE IN STANDARD 8 FOOT DROPPED CEILING TILE.
CEILING HEIGHTS OF MORE THAN 8 FEET OR HIGHER, NOISE LEVELS MAY REQUIRE LESS
THAN THE STANDARD 25 FOOT SPACING OR HIGHER TAP SETTINGS.
Figure 6
