Please read this instruction manual before installation and use GB9221 series fire alarm broadcast amplifier Instruction manual 【suitable for 150W/300W/500W】 2017/1.0 1 Overview 1） GB9221 series fire alarm broadcast amplifiers are an extension device

GB9221 series instruction manual emergency broadcast at fire or other accident scenes.In the field of fire broadcast, GB9221 must be used with the GB9242(Fire Broadcasting Host)to complete the fire broadcast. Background music broadcast can be directly played by external input source signals (such as CD/MP3 player, tuner, etc.) when there’s no accident event. 2） The display of GB9221 series fire alarm broadcast amplifiers is built-in LED indicator lights.These built-in LED indicator lights can indicate various operating conditions and fault conditions.All the functions can be set up with light...

GB9221 series instruction manual no breakdown between AC input&the chassis leakage current＜5mA（AC2000V） 3 Function buttons and Indicator LEDs 1) Front panel（figure 4-1）： 10 POWER AMPLIFIER POWER OUTPUT LEVEL MUTE TEST front panel diagram（take 500W as an example） 1. power on/off 2. volume adjustment LED indicator 3. volume adjustment knob 4.button【self test】 5.button【silence】 6.button【monitor】 7.over temperature fault LED indicator 8.overload fault LED indicator 9.output level LED indicator 10.power LED indicator 2) back panel(figure 4-2)： EMERGENCY INPUT back panel diagram（take 500W as an example）...

GB9221 series instruction manual 4.Music source input/output terminal a) Connect from 220V terminal to ~220V terminal using one 3-cores sheathed cable. Pay attention to the order of N/L/E. b) Connect the backup power supply that meets the nominal requirements to the "Standby Power" terminal. Pay attention to positive and negative polarity. c) Power cable diameter requirement input cables connection: a) Connect the external source signal cable to the “Line input I” on the rear panel. Please use high quality shielded cable. b) Connection of fire trigger signal: connect the 24V level signal given...

GB9221 series instruction manual by the alarm controller or provided by the output module. a) Line output This interface is used to extend power amplifier or transfer audio signal to other audio equipment. When the machine cannot meet the needs of field application, power amplifier can be extended through this interface. The connection line with the power amplifier should adopt high-quality shielded wire. b) Fixed voltage output Fixed voltage output is power amplifier output, which can be directly connected with fixed voltage speaker or broadcast circuit through GB9231/GB9232 broadcast divider....

GB9221 series instruction manual ♦ Overload: When the output power is more than 120% of the rated power and lasts for 2s, the "overload"LED (yellow) will light up, and the "overload" fault occurs. The main circuit will be cut off. Then the alarm sounded. ♦ Short: After the output short lasts for more than 0.5s, the "overload" LED flashes. The main power supply will be cut off and alarm occurs. ♦ Mute: After the failure, the sound signal could be manually eliminated by the mute button. 5) Monitor: The monitor speaker can be turned on/off by the [Monitor] button, and a LED(green) indicates the...

GB9221 series instruction manual