SIP-99501 SIP Ceiling speaker
Product introduceThe SIP Ceiling Speaker SIP-99501 is one IP based active speake
EN54-24 8” 2-Way Coaxial All Weather Loudspeaker HSK-108TSEN
Description:The HSK-10 8 TSEN EN54-24 8' all-weather outdoor loudspeaker offers
Active Outdoor Directional Speaker HSK-X80D
Background:The traditional campus broadcasting system usually uses high-power sp