This specification specifies the definition, technical requirements, test methods, quality assessment procedures, marking, packaging, transportation, and storage of combined speaker systems for home cinemas. This specification applies to combination speaker systems for home cinemas The following standards contain provisions that constitute the provisions of this specification through reference in this specification. At the time of publication of this specification, all versions shown are valid. All standards will be revised, and parties using this specification should explore the possibility of using the latest versions of the following standards. GB 191-1990 Graphical Symbols for Packaging, Storage, and Transportation GB/T 2828-1987 Sampling Procedures and Tables for Batch Inspection by Attributes (Applicable to Continuous Batch Inspection) GB/T 2829-1987 Sampling Procedures and Tables for Periodic Inspection by Attributes (Applicable to Production Process Stability Inspection) GB/T 7313-1987 Minimum Performance Requirements and Measurement Methods for High Fidelity Speaker Systems (neq IEC 581-7:1980) GB 8898-1997 Safety Requirements for Household and Similar General Purpose Electronic and Related Equipment Powered by Grid Power Sources (idt IEC 65:1985) GB/T 9383-1999 Limits and Measurement Methods for Immunity of Sound and Television Broadcasting Receivers and Related Equipment GB/T 9396-1996 Main Performance Test Methods for Speakers (neq lEC 268-5:1989) G13837-1997 Limits and Measurement Methods for Radio Interference Characteristics of Sound and Television Broadcasting Receivers and Related Equipment (eqv CISPR 20:1990)
Function of testing report:
1. Project bidding: Issue authoritative third-party CMA/CNAS qualification report
2. Online e-commerce platform entry: Quality inspection report recognized by major e-commerce platforms 3. Used as a sales report: issuing legally effective testing reports to make consumers more confident 4. Papers and research: Provide professional personalized testing needs 5. Judicial services: providing scientific, fair, and accurate testing data 6. Industrial problem diagnosis: Verify the troubleshooting and correction of industrial production problemsBaijian and testing process:
1. Telephone communication and confirmation of requirements
2. Recommend solutions and confirm quotations 3. Mail samples and arrange testing 4. Progress tracking and result feedback 5. Provide reports and after-sales service 6. If urgent or priority processing is requiredTesting and testing characteristics:
1. The testing industry is fully covered, meeting different testing needs
2. Fully cover the laboratory and allocate localized testing nearby3. Engineers provide one-on-one services to make testing more accurate
4. Free initial testing, with no testing fees charged
5. Self service order delivery for free on-site sampling
6. Short cycle, low cost, and attentive service 7. Possess authoritative qualifications such as CMA, CNAS, CAL, etc 8. The testing report is authoritative and effective, and is generally used in China