Public residence system chart and installation tip

PA public address sound system is a branch of the system, and sound system, too understood as vocational audio sound reinforcement system is involved in electro-acoustic, sound and music construction of the edge of the 3 science penalties. So the final outcome involves the public broadcasting system is rational, the right audio system design and debugging context because good sound transmission (built sound condition) and the accurate combination of the best three-site merging, the 3 mutually indispensable.

educate you the public address system design and installation tips (HC audio and lighting network with map)

public broadcasting for a system, have to be taken into list in the devise of manifold elements on the system. Therefore, agreeable representation should be elected on the basis of electro-acoustic devices, via careful system design, cautious construction of system debugging and nice acoustic conditions in order to cry the sound of sweet,Cheap Gucci Trainers, natural sound. The following Xiaobian compiled some public broadcasting system and the emergency broadcast system design and installation tips,Gucci Shoes Sale, to share with you what:
Public Broadcasting System
tips:
⑴ transmission: The system feeds the output power transmission cord broadcasting is adopted.
⑵ above the line attenuation requirements: in the public broadcasting system, the output from the amplifier appliance to the line between the farthest speaker line diminution users should meet the following requirements:
· service broadcasting should not exceed 2 dB (1kHz time)
· service broadcasting should not be greater than 1 dB (1kHz time)
⑶ output with constant pressure feed line, the output voltage is 70V or 100V.
⑷ power amplifier capacity enumeration method:
operational systems and business of radio broadcasting system is calculated: P = K1 × K2 × ΣPo
where: P - PA total electric power output (W);
Po - Ki × Pi, each shunt also broadcast the maximum electric power (W);
Pi - i-shunt in the consumer equipment rated capacity;
Ki - the first shunt in the meantime i need to factor;
service broadcasting,Mens Gucci Sneakers, the rooms each Ki procedures take 0.2-0.4;
Background melody Ki
​​take 0.7-0.8
K1 - Line attenuation wage factor: when the line attenuation 1dB take 1.26; line attenuation 2dB when the take 1.58;
K2 - the aging factor, and generally 1.2-1.4;
· fire broadcasting system is calculated: Calculation of the system has the following 2 ways:
a. speaker power amplifier of the system capacity by 1.3 times the total number identified.
b. PA system, the highest capacity at the 3-layer 1.5 times the total number of speakers identified.
⑸ standby power amplifier
the public broadcasting system should be set to the backup power amplifier power amplifier, power amplifier power amplifier failure in the go can be put into use automatically or manually. For the essential broadcast power amplifier (such as fire radio power amplifier) ​​the standby power amplifier, the amplifier should be able to failure in the go put into use immediately and automatically. The number of standby power amplifier momentous broadcasting should be based on the load capacity decisive.

⑹ speaker setup
· in the office, living room, changing rooms, etc. set 3W speaker carton.
· floor corridor generally use the ceiling speakers, speaker distance according storey (ceiling height) is almost 2.5 times considered. Optional 3-5W Ceiling speaker.
· auditorium, general conference rooms, canteens, shopping malls, distraction, etc. should be mounted 3-6W speaker box.
· room bedside cabinet selection 1W-2W speakers.
· room in the building decoration and clear height to allow the circumstances, should the place of the large space or a combination of speakers with acoustic col.
· noise high, humid places to set the speaker should be used horn speakers. Place in the high noise loudspeaker speakers chosen ambient noise sound pressure level should be higher than a colossal 10-15dB.

⑺ broadcasting system power requirements
· radio stations can be small-capacity power supply socket instantly; capacity of 500W or more,Cheap Gucci Shoes, set the radio control room, the power afford line by a contiguous power afford master.
· AC voltage offset worth is generally not more than 10%, when the voltage offset can not meet the requirements of equipment limitations, the equipment should be installed close the automatic voltage regulator devices.
· radio with AC power capacity is generally the last consumption of broadcasting equipment capacity 1.5-2 periods the AC.
· fire with fire power broadcast equipment.
⑻ transmission cable of alternative
· room service broadcasting circuit should adopt the multi-core copper cables or copper plastic stranded.
· other radio circumferences should adopt the copper strands of plastic.
· various programs should be shielded marker lines.
· fire radio lines bronze cable should be blaze retardant or fire resistant bronze wire and cable.
⑼ lines of laying
· line by wearing a tube or duct arranging, not with the lighting, laying of power lines with the trough.
· radio line fire fire conservation measures should be taken.

emergency broadcast system design tips:
⑴ fire radio speaker setup should meet the following requirements:
· emergency radio speaker setup in the hallway, lobby,Gucci Wallet UK, restaurants and other public places, their number should be able to guarantee any part from the floor to the nearest wading distance of a speaker does not exceed 25 meters. Intersection in the hallway,Gucci Shoes, turn the speaker should be set. Aisle end of the last speaker of not more than 12 meters away from the walls. Each speaker should not be less than the rated power 3W.
· room speaker power of not less than 1W.
· in air-conditioned room, the air apartment, laundry room, pastime areas and parking garages and other locations with background noise speaker, in his longest activity within the play ought be higher than the background sound oppression level Noise 15dB, and thus decide the speaker's power.
⑵ fire broadcast feeder voltage not more than 100V. The floor of separation voltage feeder device to assure that when whichever of the splitter is faulty, it should not influence other normal radio shunt.
⑶ fire evacuation order announce output should be controlled shunt, broadcast evacuation instructions ground control programs are as usual:
· N layer and N layer on the fire floor, the fire should be connected to the upper layer of quite bordering, lower.
· the premier floor of fire, should be connected to the floor, wafer 2 and underground layers.
· cellar fire, should be connected to floor floors and first floor.
⑷ fire service broadcasting and the business of radio broadcasting or in combination, should meet the following requirements:
· fire in the fire control room will be proficient to fire evacuation level speakers and the corresponding power amplifier to force the state into the fire radio.
· fire control room should be able to control fire radio amplifier working condition.
· room bedside closet to set the speaker, should have a fire Radio.
· If the fire service broadcasting and radio broadcasting alternatively business alignment of the speaker has a volume alternate, the system should be accustomed apt compel open a three-wire system blaze it broadcasts.