Praesideo product line offers four types of power amplifier

 equipment. Different models of amplifiers have different number of channels: 1, 2, 4 or 8. The overall power rating of all amplifiers is 500 W. The power amplifier can be set to 100 V, 70 V and 50 V output settings. They have the function of ground short circuit and short circuit detection, and generate pilot tone for monitoring. The annotated model suffix (- EU, - CN...) indicates the region specific version of these amplifiers. Amplifiers are identical, only certification, power cord and country of origin will vary. Basic function power amplifier receives input signal through network bus. In addition, they also have 2 auxiliary audio inputs (lbb4428 / 00-cn has 4 channels), which can be used for local audio. Their 8-channel control inputs can be freely programmed for various system operations and can be assigned different priorities. Each control input can monitor the connected circuit to determine whether there is an open circuit or a short circuit. Control outputs can be freely programmed for fault and call related operations. 2 x 16 character display screen and rotary button realize local status query. When the audio monitoring mode is activated, the display will display the VU meter reading. In addition, headphones can be used to monitor audio. These amplifiers have self-monitoring function and can continuously report their own status to the network controller. They support separate branch and redundant loop routing. In addition, these amplifiers also have a switching function to switch the standby power amplifier. The amplifier has built-in switching relay. At the same time, these amplifiers also have 48 VDC backup power input. The digital audio processing function can process three parameter equalization and two shelf equalization on each channel, as well as configurable audio delay function. Control and indicator light · 2 x 16 character LCD status display screen · knob / button control · power switch · voltage selector interconnection of PRs ￣ xpxxx · AC power input · battery backup input · two system network connections · two microphone / line inputs (LBB 4428 / 00 has four inputs) · 100 V, 70 V or 50 V output (each channel) can be selected Fixed 50 V output · 8-way programmable control input · control output (for each amplifier channel) · headphone output · spare amplifier connection (for each amplifier channel)

Sales telephone (same number of wechat): 13428785305 QQ: 2461903042