оповещения система

public address system Performance description: This series of power amplifier with a reliable short-circuit protection, two-way microphone input, and have the function of silent sound. Line all the way which can be accessed by CD, tuner and so on. All the way to do line output for recording or the use of other power sources do. Spendthrift, line, high-bass can be independently adjustable. For the convenience of users, the product also with u set decoding capabilities. DC12V power supply based on the traditional machinery to increase the inverter circuit, power amplifier part of the use of split lines on the tube to enlarge to make up the majority of manufacturers of AC-DC dual-use machine power shortage and the lack of good quality are limited. Technical characteristics: 1 Rated output power 40W 5 power supply AC220V-DC12V 2 output form of 4-16Ω 4 total harmonic distortion ≤ 0.2% (at rated output power) 3 the frequency response of 40Hz-18KHz ± 0.5Db 6 size 260X200X66 (mm3) Note the use of time: 1, the use of AC220V (50Hz-60Hz) AC or DC12V power supply. 2, do not block the vents, so as not to affect the effect of heat dissipation. 3, to avoid unnecessary load short-circuit. 4, MP3 player, if the microphone, line will not be used to close knob 5, if the machine is abnormal, non-professionals shall not open the machine for maintenance, in order to avoid electric shock accidents.