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Equipment and spare partsBrowse manufacturers Search by manufacturerEstablished in 1999 in Shenzhen, Shenzhen OBTPA Technology Co., Ltd. is a premier Chinese developer and manufacturer of public address (PA) systems, networked IP/SIP audio solutions, power amplifiers, commercial loudspeakers, and paperless conference equipment. We supply complete turn-key product packages from OBTPA directly to international engineering contractors, system integrators, and infrastructure facilities worldwide.
The OBTPA OBT-NP series network digital public address power amplifiers (models OBT-NP6060, OBT-NP6090, OBT-NP6150, OBT-NP6250, OBT-NP6350, OBT-NP6450, OBT-NP6550, OBT-NP6650) are engineered for distributed public address, emergency voice alarm, and background music broadcasting over TCP/IP, UDP, and standard SIP (RFC3261) protocols. Equipped with heavy-duty 70V/100V line-matching transformers and 4-16 Ohm low-impedance taps, these units deliver flawless streaming audio reception, seamless registration with corporate IP PBX/VoIP telephone platforms, and autonomous offline playback of scheduled audio tasks directly from internal memory during unexpected network disconnects.
The OBTPA analog multi-zone mixer amplifier line (OBT-6060M, OBT-6120M, OBT-6240M, OBT-6350M, and OBT-6500M) combines high-fidelity microphone/line preamplification, 5 to 6 zone selectors with step attenuators, and robust power amplification into a standardized 19-inch chassis. Meanwhile, the OBT-PX pure power amplifier series (OBT-PX350, OBT-PX600, OBT-PX800, OBT-PX1000) delivers high-headroom continuous power for massive speaker networks, incorporating comprehensive multi-stage protection against line short circuits, thermal overload, and DC offset.
OBTPA ceiling loudspeakers in the OBT-501, OBT-502, OBT-606, and OBT-805 series, alongside active network PoE/SIP ceiling units such as OBT-POE611 and OBT-IP800, produce uniform, articulate acoustic coverage for shopping malls, corporate headquarters, hotels, and educational facilities. Constructed with flame-retardant ABS enclosures, optional metal rear fire domes, and sturdy spring-loaded dog-leg mounting clamps, these speakers facilitate rapid, clean installation into standard suspended ceiling tiles and drywall recesses.
The OBTPA outdoor sound columns (OBT-701, OBT-702, OBT-703, OBT-704) and high-SPL re-entrant paging horns (OBT-311, OBT-312, OBT-315) are built to endure harsh outdoor weather and aggressive industrial atmospheres. Formed with seamless extruded aluminum enclosures rated to IP66, the sound column arrays achieve tight vertical directivity, effectively eliminating reflections in reverberant transit terminals, railway platforms, and manufacturing bays. The rugged horn units generate up to 125 dB sound pressure levels for maximum emergency broadcast range.
The OBTPA OBT-4G901, OBT-4G902, OBT-4G903, and OBT-4G904 wireless public address systems integrate a commercial 4G LTE cellular transceiver, cloud audio processor, and high-efficiency Class-D digital amplifier into a single standalone outdoor unit. These systems allow rapid deployment of wide-area public address coverage across parks, forestry preserves, mining pits, highways, and rural regions without costly cable trenching, supporting unified scheduling and remote live paging via browser dashboards or mobile apps.
The core management hardware of the OBTPA IP audio ecosystem features the OBT-9800NP industrial 19-inch rackmount broadcast server, OBT-9928 central network controller, and OBT-9801/OBT-9802/OBT-9803 desktop capacitive touch paging consoles. The pre-installed OBTPA server software delivers granular audio stream routing, hierarchical priority enforcement, automated multi-zone task scheduling, and dry-contact fire alarm trigger integration for instant emergency voice evacuation override.
The OBTPA OBT-9811, OBT-9812, and OBT-9815 series heavy-duty IP/SIP emergency intercom call stations and help points are engineered for reliable two-way handsfree communication in public transit hubs, parking garages, bank ATM kiosks, prisons, and educational facilities. Featuring rugged brushed stainless steel faceplates, tamper-resistant SOS call buttons, and advanced digital acoustic echo cancellation (AEC), these terminals guarantee crystal-clear full-duplex conversations with central dispatchers.
The OBTPA OBT-6000, OBT-3000, and OBT-8000 professional digital and wireless conference solutions provide comprehensive management for parliamentary chambers, municipal boardrooms, press centers, and corporate meeting halls. The platform couples the OBT-60001 central processor with OBT-6000A/C chairman and OBT-6000B/D delegate microphone units, supporting parliamentary electronic voting, simultaneous language interpretation, and automated PTZ camera tracking (OBT-V081) via PELCO/VISCA protocols. For modern paperless boardrooms, OBTPA offers motorized ultra-thin capacitive touch displays with integrated microphone lifters.
Our technical engineers perform comprehensive power calculations for distributed transformer lines, recommend precise loudspeaker placement based on ambient noise criteria, and design scalable IP/SIP network topology diagrams tailored for large-scale venues, commercial buildings, and industrial plants.
OBTPA audio equipment has been successfully deployed in major international projects, including international sporting stadiums, world expo pavilions, transport terminals, university campuses, and manufacturing facilities across dozens of countries, proving supreme operational dependability.
The manufacturing infrastructure adheres strictly to ISO 9001 quality management and ISO 14001 environmental standards. All OBTPA products comply with CE, FCC, and RoHS mandates, undergoing 100% factory acoustic, electrical, and stress testing prior to packaging.
All genuine OBTPA equipment is dispatched directly from the Shenzhen factory in export-grade protective packaging, complete with factory quality inspection certificates, CE/FCC documentation, and comprehensive technical manuals, backed by transparent international shipping and logistics.
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