Public address system GB350E

Product features

• Integrated design and reduced footprint.
• High-power output capability.
• Silica gel button: attractive appearance, good tactile feel and long service life.
• Output of constant voltage 120V.
• Direct access to USB stick or card reader; compatible with USB 2.0 devices.
• Comprehensive overload, over-temperature and short-circuit protection for safe, reliable operation.
• Interlock with control device via RS-485 communication.
• Equipped with an auxiliary 24V emergency remote control wire interface.
• Reserved standby 220V port for external backup power connection.

Product information / Usage notes

• Observe correct polarity when connecting power lines.
• Ensure the chassis is properly grounded during use.
• To ensure stable operation, maintain at least 10 seconds between consecutive switching actions.
• When linking to an external control panel, ensure the operating frequency is not too high.

Technical Parameters
Power supply: AC 220V (+10%,-15%, 50Hz)
Remote control trigger mode: 24V level trigger
Line input sensitivity (rms): 200mV (external line 1), 900mV (external line 2)
Frequency response range: 80Hz ~ 8kHz
Total harmonic distortion: <5%
SNR: 70dB
Monitoring power: 1W
Rated output voltage: 20V (constant voltage mode)
Rated output power: 350W
Operating environment: Temperature 0 ~ +40 ℃, relative humidity 95%
Insulation strength: a) AC input to the chassis greater than 50M (DC500 V); b) Constant voltage output to the chassis greater than 50M (DC500 V)
Electrical strength: AC input to the chassis leakage <10mA (AC 1,250V)

Specifications / Technical details

• Model: GB350E
• Power supply: AC 220V (+10%,-15%, 50Hz)
• Remote trigger: 24V level trigger
• Line input sensitivity: 200mV / 900mV (rms)
• Frequency response: 80Hz - 8kHz
• Total harmonic distortion: <5%
• SNR: 70dB
• Monitoring power: 1W
• Rated output voltage: 20V (constant voltage)
• Rated output power: 350W
• Operating temperature: 0 ~ +40 ℃; Relative humidity up to 95%
• Insulation & electrical strength: AC input and constant voltage output to chassis >50M (DC500V); leakage <10mA (AC 1,250V)