MIL-DTL-24223/2B(SH)
TABLE I. On-axis sound pressure output.
Decibel (dB) 1/ Output in Warble Band (Hertz)
Type
Distance
800 to
1,250 to
2,000 to
3,200 to
7.5 VA
(FT)
320 to 500
500 to 800
1,250
2,000
3,200
5,000
LS-387()/SIC
10
---
104
108
109
106
---
LS-388()/SIC
10
---
104
108
109
106
---
LS-535()/SIC
5
---
99
103
106
108
---
LS-536()/SIC
5
---
99
103
106
108
---
NOTE:
1/
dB re 0.0002 dynes/cm2 at the distance specified.
Sound pressure distribution:
TABLE II. Off-axis sound pressure output.
Decibel (dB) Decrease In Relative Sound Pressure Output
Type
30 Degrees Off-Axis
30 Degrees Off-Axis (Vertical
7.5 VA
(Horizontal Plane)
Plane)
LS-387()/SIC
5
5
LS-388()/SIC
5
5
LS-535()/SIC
5.5
5.5
LS-536()/SIC
5.5
5.5
Frequency response: Shall be within FIGURE 2A limits over the band shown for any volume setting.
3
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