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The built-in PLM?4Px2x polaroid matrix amplifier performs the work. As a reliable and economical multichannel amplifier, it is suitable for almost any application requiring high quality sound and flexible control. The built-in DSP processor has powerful functions. Bosch/EV/Dynacord speaker products are easily invoked through the speaker library. Enabling the power-saving mode on the amplifier can save more than 80% of the running cost in the corresponding area when not in use. Equipped with "Amp Link", easily connect PLM?4Px2x amplifier and PLM?8M8 channel DSP matrix mixer. Some typical applications include: shopping centres, schools, restaurants, bars, nightclubs, cafes, a gym, recreation facilities, church, warehouse, office building, airport, railway station, bus station, the board of directors meeting rooms, meeting rooms, conference facilities, small theme parks, museums and stadium, indoor after performing arts center. The indicator light on the front panel of the basic function controller and indicator is signal/clipping indicator light, each channel fault indicator light and main power indicator light. There are no controls on the front panel of the device to prevent arbitrary changes to the system Settings. On the back side of the device, however, there are four output channel down/down knobs for changing input sensitivity, DIP switches for bridging amplifier channels, and main power switches. All other controls and indicators are provided through PC GUI software. DSP function access DSP function through PC GUI software. ? input mixer: each of the four amplifiers has a separate input mixer. Through the PC GUI, any 4-line input can be mixed with a covered input and noise generator with a controllable level. Effectively create a powerful independent mixer amplifier. ? frequency divider: High Pass Low Pass filter with up to 8 segments for each channel. ? output equalizer: there is an 8-band full-function parameter equalizer in each region. It also includes dynamic bass enhancement. ? latency: the output latency of each channel is 120 milliseconds. ? DRC (dynamic range compressor) : threshold, ratio, trigger, release time, and gain per channel. ? output level: can limit amplifier channel output. ? output level mixer: control the output of each amplifier separately on a screen, and realize easy adjustment and operation. ? fault and temperature indication for each amplifier channel. ? channel and system silence. ? manual standby. · control application control through PC GUI and/or iOS. Third party control software can be used to control the output level mixer and standby mode through Ethernet. Dynamic bass enhancement areas that have been adjusted and sound good at normal levels may sound sharp when the volume is turned down. Dynamic bass augmentation automatically results in a fuller sound, even when the sound pressure level is low. When the area returns to normal level, the low tone enhancement drops proportionally to restore the preset level and Settings. Standby and automatic standby modes reduce the impact on the environment and reduce the operating cost of power amplifiers, so they are more economical and environmentally friendly than other amplifiers. The standby mode can be enabled and disabled manually through PC GUI software, or the additional installed Bosch mobile detector can be changed into "automatic standby mode". In areas where activity has stopped, the amplifier is automatically converted to a low power mode after a predefined wait time. When the area is active again, the amplifier can be fully activated in only one second by gradually enhancing the background music. The amplifier is also equipped with 12 VDC power output, making it easy to install a mobile detector. Conform to EN 60065 certificate and approval safety standards EN 55103 ? 1 standard EMC EMC radiation immunity in accordance with EN 55103 ? 2 standard parts and Amp certification European CE CE installation/configuration Link input PLM ? 4 px2x amplifier with TRS jack, each input channel is equipped with 3 needle XLR or phoenix European junction box. Because these interfaces are wired in parallel, a loop can be formed simply by using the input interface used. In addition, the Amp Link input makes the connection between the PLM?8M8 DSP matrix mixer unusually easy. Simply connect the attached CAT 5 cable to the Amp Link port on each device to connect the four audio channels on the DSP matrix mixer to the amplifier. No setup or configuration is required. In addition, there are balanced line level coverage inputs that can be activated by contact closure. This input overrides all other inputs in the amplifier. The output channels can be connected to 100V, 70V, 8ohm and 4ohm outputs. The output can be connected to channels 1-2 and/or 3-4 through the DIP switch bridge. All output channels can support different output impedance and configuration at the same time. For example, ch1-2 is bridged with 4 ohms load, Ch3 has 100V load and Ch4 has 8 ohms load. This can be done without affecting performance. Attachment number component 1 PLM p125 or PLM ? ? 4 4 p220 power amplifier power cord 1 19-inch mounting bracket suite 1 CAT 5 26 AWG cable shielding (1 meter) 1 security file specification: electric power supply voltage, rated input voltage of 100-240 VAC plus or minus 10%, 50/60 Hz, the input voltage limit, 90-264 VAC power consumption (- 6 db/idle/standby) : , PLM ? 4 p125 27 W / 254 W / 6 w. PLM ? 4 p220 36 W / 412 W / 6 W/impedance performance rated output voltage 100 V / 70 V / 8 ohm / 4 ohms each channel of the rated power output (continuous *) : ? PLM 130 w. PLM ? ? 4 p125 4 p220 the rated output power 220 W each channel (spurts *) : ? PLM?4P125 130 W ? PLM? 4p220w bridged (channel 1-2/3 ?4) (continuous *) : , PLM ? 4 p125 0.1%, PLM ? 4 p220 0.03% dynamic range (A weighted) : ? PLM ? 4 p125 > 101 dB, PLM ? 4 p220 > 102 dB frequency response (1 dB) 65 Hz and 20 kHz (+ 0 / ? 3 dB) < 1 kHz when crosstalk attenuation - 70 dB * CEA ? ? ? A R 490 2008 standard connector input (parallel connection) : , 4 3 needle XLR balanced type, 4 3 extremely balanced Phoenix terminal 1 (male), RJ45 (Amp), 4 3 extremely Phoenix in the speaker output terminals (male), covering and standby logic covering 2 Phoenix terminal (male) 10/100 Mbps Ethernet RJ45 mobile sensor 12 V output power 2 Phoenix terminal (male)