In the room with only frame ceiling but no ceiling (such as open-frame shopping malls), it is appropriate to use ceiling-mounted barrel speakers (ST-708S) or ceiling speakers with rear cover (such as XT-701N~705 series). Since the ceiling is equivalent to an infinite baffle, using a speaker without a rear cover under the condition of a ceiling will not cause an acoustic short circuit. The situation is very different without the ceiling. If you still use the ceiling speaker without the back cover, the effect will be very poor. In this case, use ceiling speakers in principle. However, if the investment is too large, ceiling speakers with a rear cover can also be used. The rear cover of the ceiling speaker with the rear cover not only has the general mechanical protection function, but also plays the role of preventing sound short circuit to a certain extent.
In rooms without ceilings (such as underground parking lots), wall-mounted speakers or indoor sound columns should be used. The former such as BG-105, BG-106, BG-108 series, the latter such as SN-302~304 series.
Outdoors, it is advisable to use an outdoor sound column or horn. The former such as SY-510~540, SY-611~616 series; the latter such as HS-30Q~150Q series. This kind of sound column and horn not only has the function of preventing rain but also has a large volume. Because the outdoor environment is open and there is no reverberation effect, it is necessary to choose a variety with a large volume.
In gardens and grasslands, lawn speakers should be used. Such as S-601~S-1001, KT-620, DT-21A~28A and other series. This type of speaker is rainproof, beautiful in shape, and more particular about volume and sound quality.
In the halls with elaborate decoration and high ceilings, it is advisable to use ceiling-mounted speakers with elegant shapes and harmonious colors, such as ST-708S series. Such as ST-708S series. This type of loudspeaker is fully sealed, and its outlet can be mated with a flame retardant sleeve.
