Audio Database

  • (in cm)

    Horn model number A★ B★ C★
    311-90
    311-60
    329A
    511B
    811B    		 53.5
    53.5
    71.0
    50.0
    34.0    		 32.6
    26.7
    31.0
    27.0
    22.0    		 72.5
    51.0
    83.2
    63.3
    47.0

  • ■ Gasket Specification Sheet
    No1 to No3 for 288-16G, 291-16B, 290E
    Use No6 for 802-8D and 806-8A.

    No. Part No. Outer Diameter Inner Diameter Thickness
    1
    2
    3
    6    		 20466
    21263
    21270
    20472-2    		 50.8mm
    101.6mm
    50.8mm
    101.6mm    		 35.7mm
    25.4mm
    35.7mm
    25.4mm    		 0.51mm
    2.36mm
    3.18mm
    1.80mm

On-Axis sound pressure level obtained by combination of horn driver

Horn DRIVER Input power SPL at 30Ft.(9m) SPL at 10Ft.(3m) SPL at 4Ft.(1.2m)
311-60 288-8G/288-16G 15watts
1watt		 108.0dB
96.0dB		 117.5dB
105.5dB		 125.5dB
113.5dB
290E/290-4G 100watts
1watt		 112.5dB
92.5dB		 122.0dB
102.0dB		 130.0dB
110.0dB
291-16B 40watts
1watt		 112.0dB
96.0dB		 121.5dB
105.5dB		 129.0dB
113.0dB
311-90 288-8G/288-16G 15watts
1watt		 104.5dB
92.5dB		 114.0dB
102.0dB		 122.0dB
110.0dB
290E/290-4G 100watts
1watt		 109.0dB
89.0dB		 118.5dB
98.5dB		 126.5dB
106.5dB
291-16B 40watts
1watt		 108.5dB
92.5dB		 118.0dB
102.0dB		 126.0dB
110.0dB
203B 288-8G/288-16G 15watts
1watt		 108.0dB
96.0dB		 117.5dB
105.5dB		 125.5dB
113.5dB
290E/290-4G 100watts
1watt		 112.5dB
92.5dB		 122.0dB
102.0dB		 130.0dB
110.0dB
291-16B 40watts
1watt		 112.0dB
96.0dB		 121.5dB
105.5dB		 129.5dB
113.5dB
803B 288-8G/288-16G 15watts
1watt		 106.5dB
94.5dB		 116.0dB
104.0dB		 124.0dB
112.0dB
290E/290-4G 100watts
1watt		 111.0dB
91.0dB		 120.5dB
100.5dB		 128.5dB
108.5dB
291-16B 40watts
1watt		 111.0dB
94.5dB		 120.5dB
104.0dB		 128.5dB
112.0dB
1003B 288-8G/288-16G 15watts
1watt		 104.5dB
92.5dB		 114.0dB
102.0dB		 122.0dB
110.0dB
290E/290-4G 100watts
1watt		 109.0dB
89.0dB		 118.5dB
98.5dB		 126.5dB
106.5dB
291-16B 40watts
1watt		 108.5dB
92.5dB		 118.0dB
102.0dB		 126.0dB
110.0dB

* Measurement conditions in the table
1. The electrical input signal is pink noise with a frequency band of 500 to 3 kHz.
2. Electrical input refers to the effective voltage (RMS, Volt) x effective current (RMS, Current).
3. The on-axis 4 feet (1.2m) sound pressure level indication is converted from a sound pressure level of 10 feet (3m) from the opening due to the nature of the horn system.