Toa PW-1430SW - Manual (Page 7)

7
5.2.1. Beam tilting function
Shifting the beam tilting switch to “DOWNWARD” causes the sound radiation to be directed about 5° downward
from the horizontal.
Central axis of sound radiation
[when shifted to “FLAT”]
[when shifted to “DOwNwARD”]
Switch setting Radiation direction
FLAT 0°
DOWNWARD 5° Downward
5°
Central axis of sound radiation
Area where sound is especially intelligible
5.2.2. High pass filter function
Both types of speakers provide dispersion
characteristics shown as radiation patterns at
right.
To cut unwanted low-frequency sounds radiated
outside from the coverage area, shift the
high pass filter switch to the “ON” position.
Frequencies below 450 Hz are cut at −12 dB/oct.
In this case, low-frequency sounds in the
coverage area are cut as well, however, this will
have little influence on sound intelligibility.
These ratiation patterns are viewed from above the speakers.
[Radiation patterns]
Coverage area
Coverage area
Coverage area
Speaker
Speaker
: High-frequency sound
: Low-frequency sound
Legend
• Double-sided type • Single-sided type