Standard No.:	GB 50949-2013
English Name:	Construction Code for Sound Reinforcement System
Chinese Name:	扩声系统工程施工规范
Chinese Classification:	P77    Broadcasting, movie and television engineering
Professional Classification:	GB    National Standard
ICS Classification:	33.160.01 33.160.01    Audio, video and audiovisual systems in general 33.160.01
Issued by:	MOHURD
Issued on:	2013-11-1
Implemented on:	2014-6-1
Status:	valid
Language:	English
File Format:	PDF
Word Count:	16000 words
Price(USD):	180.0
Delivery:	via email in 1 business day

1 General Provisions 1.0.1 This code is formulated to specify construction of sound reinforcement system and ensure its constructional quality. 1.0.2 This code is applicable to construction of sound reinforcement system which is fixed and erected in various constructed, renovated and extended buildings, like halls and sports venues. 1.0.3 Construction of sound reinforcement system shall be carried out according to the approved construction drawing design documents. 1.0.4 The construction of sound reinforcement system shall not only meet the requirements stipulated in this code, but also comply with those in the current relevant ones of the nation. 2 Terms 2.0.1 sound reinforcement system a system which converts sound signal into electric signal and then reconverted into sound signal after being amplified, processed and transmitted, for serving the sound field environment, with and including equipment and sound field. 2.0.2 sound control room the technical room for operating and controlling sound reinforcement system equipment. 2.0.3 power amplifier room the technical room for holding power amplifier of sound reinforcement system. 2.0.4 grounding the special ground system for preventing interference of external electromagnetic field. 2.0.5 reference materials of programme source the reference materials, approved by national standardization management organizations, particularly edited and made to make subjective assessment on sound reinforcement system and sound quality of electroacoustic products. 3 System Construction 3.1 General Requirements

1 General Provisions 2 Terms 3 System Construction 3.1 General Requirements 3.2 Preparing for Construction 3.3 Mounting of Junction Box and Connecting Box 3.4 Cable Laying 3.6 Loudspeaker Mounting 3.7 Equipment Installation 3.8 System Connection 4 Initiation and Adjustment for System 4.1 General Requirements 4.2 System Initiation 4.3 System Adjustment 5 Self-checking and Trial Operation for System 5.1 Self-checking 5.2 Trial Operation 6 Filing of Engineering Documents Annex A Engineering Change Approval Annex B Arrival of Material and Equipment Inspection Declaration Annex C Concealed Works Acceptance Receipt Annex D System Installation Acceptance Receipt Annex E Trial Operation Record of System Explanation of Wording in This Code List of Quoted Standards