TOA bs-1030 Mode D'Emploi

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TOA Electronics Speaker Guide
 
Speaker Types
15
In-wall Speakers 
Figure 3-3 H-1 in-wall speaker
Installing the speaker inside a wall is unobtrusive and deters theft. However, installation can be 
costly and proper aiming and positioning are often problematic. The TOA H-1 in-wall speaker 
overcomes this obstacle by using rotating speaker elements to aim sound where it is needed. 
Proper spacing is important, especially for speech intelligibility.
Paging Horns 
Figure 3-4 SC Series paging horns
Paging horns can achieve a higher SPL than ceiling or wall speakers, but have limited frequency 
response, lower sound quality, and higher distortion levels. They are seldom used for music ap-
plications but are commonly used outdoors where long sound projection distances are needed. 
They are also used in noisy environments where high sound levels are required for intelligible 
messages (i.e., large public spaces, warehouses, and factories). When properly aimed and in-
stalled, their controlled coverage and reduced low frequency output increases the direct sound 
level and reduces low-frequency masking, which are significant advantages in large rooms. The 
TOA SC Series wide-range paging horns offer a compromise between high output levels and 
sound quality that is preferred for outdoor music applications.