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| Product name ： |
SWPA-02 Digital Single Wire PA System (46 countries' monopolies) |
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Describe：
1. Do you believe our SWPA needs only one wire to connect more than 100,000 speakers in series ?
2. Have you ever seen a broadcasting system that does not need power amplifier?
Broadcasting systems are very common in our daily life, but the traditional technique is either too complicated or cost ineffective for large-area broadcasting. For example, a giant-powered main amplifier is required and costs are very high; impedance matching is essential for correct speaker connection; power loss due to long distance wiring ; too much wiring for speakers connected in parallel which will increase the cost; high voltage transformer causes sound distortion and bad frequency responses. Futher more, power of the main amplifier is fixed, expanding the number of speakers can be a complex job. Our SWPA system can overcome all these problems,contact us today! |
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Characteristic ：
Problems in traditional broadcasting system:
1. High power amplifiers needed to drive the system.
2. High cost for system and setup.
3. Losses in wire will affect power delivered to speakers at a distance.
4. Too much wiring is required for connection which causes setup a complex task.
5. Output power of speakers differs with respect to distance.
6. Imperfection in high voltage transformers results in lower sound quality.
7. Difficult to add more speakers to the system due to limited power from central amplifier.
Advantages of SWPA compared to traditional approach:
1. Small central controller for the whole system.
2. Simple solution to setup of system (1 wire per system).
3. High voltage transformer not used (higher sound quality).
4. Longer lifespan.
5. Lower maintenance cost.
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Specification ：
| COMPARISION CATEGORIES |
SWPA
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TRADITIONAL
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WIRE CONNECTION
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1 WIRE WHOLE SYSTEM
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2 WIRE PER SPEAKER
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POWER AMPLIFIER
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NOT NEEDED
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NEEDED
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HIGH VOLTAGE OUTPUT TRANSFORMER
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NOT NEEDED
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NEEDED
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OUTPUT MATCHING NETWORK
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NOT NEEDED
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NEEDED
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LOSS DUE TO WIRE
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NO
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YES
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POWER RECEIVED BY EACH SPEAKER
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SAME
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DIFFERENT
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DISTORTION
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SMALL
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LARGE
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NUMBER OF SPEAKERS IN ENTIRE SYSTEM
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UNLIMITED EXPANSION
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SET BY MAX POWER AVAILABLE
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DETECTION OF OPEN CIRCUITCONNECTION
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AVAILABLE
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NOT AVAILABLE
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SHORT CIRCUIT IN SPEAKER CONNECTIONS
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SAFE
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BURN OUT
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SPEAKER OUTPUT ARE ADDRESSABLE
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USER CHOICE
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NOT AVAILABLE
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WARNING LIGHT FOR SPEAKER FAILURE
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AVAILABLE
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NOT AVAILABLE
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BACK UP POWER UPS SYSTEM
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UP TO 6 HOURS
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NOT AVAILABLE
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FACTORY REFURBISH
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SIMPLE
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DIFFICULT
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OVERALL SYSTEM SETUP
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SIMPLE
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DIFFICULT
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OVERALL SYSTEM COST
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LOW
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HIGH
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SWPA-02 MAIN AMPLIFIER
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POWER SUPPLY
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DC 18 V,2A. (36W)
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AMPLIFIER OUTPUT POWER
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0.5 WATT
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MONITORING SPEAKER POWE
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1WATT
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CONTROL ALGORITHM
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DIGITAL ENCODER/DECODER
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ENTRY FORMAT
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LCD TOUCH PANNEL
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CONNECTING WIRES
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SINGLE WIRE (max length:500km)
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SPEAKER OUTPUT CONNECTION
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2 PORTS
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SPEAKER SELECTION
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SINGLE ,GROUP, ALL
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REMOTE DESK MICROPHONE
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UP TO 4 CONNECTION
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SHORT PROTECTION
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ALWAYS ON
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MAX INPUT SIGNAL
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300mv(p-p)
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AUTOMATIC FIRE ALARM SYSTEM
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TWO SENSOR TERMINALS
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MAX NUMBER OF SPEAKERS
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100,000 SPEAKERS SERIES
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MAX AREA COVERED
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500 km 2
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BACK UP POWER UPS SYSTEM
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INTERNAL RECHARGABLE BATTERY
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