2.7.1
Cone Speaker
The cone speaker shall as a minimum conform to the following specifications:
Application:
[Wall baffle] [Ceiling]
Frequency range:
60 to 12,000 Hz
Power Rating:
Normal - [7] [_____] watts
Peak
- [10] [_____] watts
Voice Coil Impedance:
8 ohms
Line Matching
Transformer Type:
25/ 70.7 volt line
Capacity:
4 watts
Magnet:
10 ounces or greater
Primary Taps:
0.5, 1,
2 and 4 watts
Primary Impedance:
25 volts - 1250, 625, and 312 ohms
70.7 volts - 10k, 5k, and 2.5k ohms
30 - 20,000 Hz
Insertion Loss:
Less than 1 dB
2.7.2
Horn Speaker
The horn speaker shall as a minimum conform to the following specifications:
Application:
[Indoor] [Outdoor] [Weatherproof]
400 - 14,000 Hz
Power Taps:
70 volt line - .9, 1.8, 3.8, 7.5,
and 15 watts
Impedance:
5000, 2500, 1300, 670, 330, 90, and 45
ohms
Power Rating:
Normal - [ 7] [_____] watts
Peak
- [15] [_____] watts
110 degrees
2.7.3
Dual Horn Speaker
The dual horn speaker shall meet the minimum requirements of horn speaker
except the dispersion shall be 100 degrees.
2.7.4
High Output
Speaker Enclosures
High Output speaker enclosures shall be of the tuned-port design for
SECTION 16770
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