Disclosure to Promote the Right To Information

Whereas the Parliament of India has set out to provide a practical regime of right to information for citizens to secure access to information under the control of public authorities, in order to promote transparency and accountability in the working of every public authority, and whereas the attached publication of the Bureau of Indian Standards is of particular interest to the public, particularly disadvantaged communities and those engaged in the pursuit of education and knowledge, the attached public safety standard is made available to promote the timely dissemination of this information in an accurate manner to the public.

इंटरनेट मानक

“!ान $ एक न' भारत का +नम-ण”Satyanarayan Gangaram Pitroda

“Invent a New India Using Knowledge”

“प0रा1 को छोड न' 5 तरफ”Jawaharlal Nehru

“Step Out From the Old to the New”

“जान1 का अ+धकार, जी1 का अ+धकार”Mazdoor Kisan Shakti Sangathan

“The Right to Information, The Right to Live”

“!ान एक ऐसा खजाना > जो कभी च0राया नहB जा सकता है”Bhartṛhari—Nītiśatakam

“Knowledge is such a treasure which cannot be stolen”

“Invent a New India Using Knowledge”

है”ह”ह

IS 9551-1 (2001): High Fidelity Audio Equipment and Systems: Minimum Performance Requirements, Part 1: General [LITD7: Audio, Video and Multimedia Systems and Equipment]

&—

Indian Standard

HIGH FIDELITY AUDIO EQUIPMENT ANDSYSTEMS : MINIMUM PERFORMANCE

REQUIREMENTS — SPECIFICATIONPART 1 GENERAL

( First Revision)

I

December 2001

ICS 33.160.01

,

0 BIS 2001

BUREAU OF IN DIAN STANDARDSMANAK BHAVAN, 9 BAHADUR SHAH ZAFAR MARC

NEW DELHI 110002

Price Group 2

I

Acoustics Sectional Committee, LTD 5

FOREWORD

This Indian Standard (Part 1) (First Revision) was adopted by the Bureau of Indian Standards, after the draftfinalized by the Acoustics Sectional Committee had been approved by the Electronics and TelecommunicationDivision Council.

Specification for high fidelity audio equipment and system have been covered in a series of standards consistingof the following individual parts:

Part 1 General

Part 2 Amplifiers

Part 3 Loudspeakers

Part 4 Record playing equipment and cartridges

Part 5 Magnetic sound tape recording and reproducing equipment

Part 6 Microphones

Part 7 Headphones

Part 8 Radio tuner equipment

This standard (Part 1) specifies the general requirements for high fidelity audio equipment and systems fordomestic use. This standard was first published in 1982 and was based on IEC 60581-1 (1977)) ‘High fidelityaudio equipment and systems: Minimum performance requirements — Part 1: General’ and DIN 45500 ‘Blatt1 Hi-Fi techniques’. This revision has been undertaken to harmonize it with the IEC standard. Provisions takenfrom the DIN standard have been omitted.

While preparing this standard, assistance has been derived from IEC 60581-1.

The Composition of the Committee responsible for formulation of this standard is given in Annex B.

For the purpose of deciding whether a particular requirement of this standard is complied with, the final value,observed or calculated, expressing the result of a test, shall be rounded off in accordance with IS 2:1960 ‘Rulesfor rounding off numerical values (revised)’. The number of significant places retained in the rounded off valueshould be the same as that of the specified value in this standard.

IS 9551 (Part 1) :2001

Indian Standard

HIGH FIDELITY AUDIO EQUIPMENT ANDSYSTEMS : MINIMUM PERFORMANCE

REQUIREMENTS — SPECIFICATION

(1 SCOPE

PART 1 GENERAL

First Revision

4.3 Atmospheric Conditions

This standard (Part 1) specifies the required minimumvalues of the characteristics of audio equipment andsystems for high quality reproduction which aredesigned for household use. The standard appliesequally to monophonic, stereophonic andmultichannel equipment and systems.

2 REFERENCES

The Indian Standards given in Annex A containprovisions which, through reference in this textconstitute provisions of this standard. At the time ofpublication, the editions indicated were valid. Allstandards are subject to revision, and parties toagreements based on this standard are encouraged toinvestigate the possibility of applying the most recenteditions of the standards given in Annex B.

3 TERMINOLOGY

For the purpose of this standard, the terms anddefinitions as given in IS 1885 (Part 48/See 1), andIS 1885 (Part 48/See 2) shall apply.

4 GENERAL CONDITIONS OFMEASUREMENT

4.1 Methods of Measurement

Measurements shall be made in accordance withmethods of measurement stated in the relevant IndianStandards referred to in each part of this standard.These include IS 8152, IS 9729, IS 12193 (Part 1), andIS 12193 (Part 2).

4.2 Supply Voltage and Frequency

The measurements shall be made at a supply voltagewith ~1 percent of the rated value and at a supplyfrequency within t 1 percent of the rated value, unless@herwise stated in the relevant part of this standard.

This equipment, which is used in living-rooms, shallcomply with the specification over the following rangeof atmospheric conditions unless otherwise stated inthe relevant part of this standard.

Ambient temperature: 5 to 40 “cRelative humidity: 45 to 85 percentAtmospheric pressure: 86 to 106 kPa

5 INTERCONNECTION

The individual units in a system shall fulfil therequirements for interconnections as given in IS 9647,IS 9302 (Part 10) and in the relevant part of IS 11777,unless otherwise stated in the relevant part of thisstandard.

6 SAFETY REQUIREMENTS

The equipment shall comply with the safetyrequirements of IS 616.

7 PUBLISHED DATA

7.1 If a unit has more than one mode of operation (forexample, different speeds on a tape recorder) and theunit does not comply with the requirements of thisstandard for all of these modes, this must be clearlystated in the user instruction book and in any publishedtechnical specification.

7.2 All those characteristics which are given in therelevant part of this standard for each type ofequipment shall be specified by the manufacturer andshall be measured by the methods of measurementgiven in 4.1.

NOTE — If other characteristics are specified in addition to theabove, the methods of measurement of these characteristics shallbe fully defined.

Abbreviated technical specifications may bepublished, provided that all the information specifiedabove is available to a prospective user beforepurchase of the equipment.

1

I

IS 9551 (Part 1) :2001

IS No.

616:1986

1885(Part 48/Sec 1) :1978

885(Part 48/Sec 2) :1978

8152:1976

9302(Part 10) :1980

ANNEX A

(Clause 2)

LIST OF REFERRED INDIAN STANDARDS

Title IS No.

Safety requirements for mains 9647:1986operated electronic and relatedapparatus for household and similargeneral use 9729:1981Electrotechnical vocabulary: Part 48Recording: Section 1 Tape recording 11777:1987

Electrotechnical vocabulary: Part 48Recording: Section 2 Disk recording

12193

Title

General requirements and methods oftests for low frequency connectorsbelow 3 MHz including dc

Methods of measurement of diskrecord playing equipment

Circular connectors for radio andassociated sound equipment forfrequencies below 3 MHz includingdc

Methods of measurement for radioMethods of measurement of speedfluctuations in sound recording andreproducing equipment

Characteristics and methods ofmeasurements for sound systemsequipment: Part 10 Preferredmatching values for theinter-connection of sound systemcomponents

(Part 1): 1989 receivers for various classes ofemission: Part 1 Generalconsiderations and methods ofmeasurements including audiofrequency measurement

12193 Methods of measurement for radio(Part 2): 1987 receivers for various classes of

emission: Part 2 Radio frequencymeasurements on receivers foramplitude modulated soundbroadcast emissions

--

IS 9551 (Part 1) :2001

ANNEX B

(Foreword)

COMMITTEE COMPOSITION

Acoustics Sectional Committee, LTD 5

Organization Representative(s)

In personal capacity (520 Rajmahal Vilas Extn. DR K. D. PAVATE(C/@wtan)

X1A Cross, Bangalore 560086)Ahuja Radio, New Delhi SHRISANDEEPAHUJA

SHRIS. J. KALRA(Alternate)

All India Institute of Speech and Hearing, Mysore DR SHAILAJANIKAM

All India Radio, New Delhi SHRIA. S. GUINSHRIP. C. SANGHI(Alternate)

Building Network Automation Pvt Ltd, Bangalore SHRIV. RANGANATHANSHRIM. K. ALAGE(Alternate)

Central Electronic Emzineerine Research Institute. New Delhi DR K. V. RAMAKRISHNAN. .

Central Public Works Department, New Delhi

Department of Electronics, New Delhi

Directorate General of Doordarshan, New Delhi

I.T.L Ltd, Bangalore

Lloyd Insulation (India) Ltd, Mumbai

Ministry of Defence (LCSO), Baogalore

National Physical Laboratory, New Delhi

Philips India Ltd, Pune

Voice and Speech Systems, Bangalore

BIS Directorate General

DR P, K. CJtAKRABORTY(A[temate)SHRIS. P. BARANWAL

SHRIN. N. AGARWAL(Alternate)DR P. N. GUPTA

SHRIA. S. SOOD(Alternate)SHRIDHRUVARAY

SHRIP. DEVASAN(Alfemate)SHRIK. NAGARAJ

SHRINAGARAJAPPA(Alternate)SHRIN. SRINIVAS

SHRIK. C. SHARMA(Alternate)SHRIJ. P. NANISETN

SMTHAMSAF AUGUSTIN(Alternate)DR V. MOHANAN

SHRIOMKARSHARNIA(Alternate)SHRIN. R. WARTIKAR

SHRIM. Y. NENE(Altemafe)DR T. V. ANANTHAPADMANABHA

SHRIH. N. JAYASIMHA(Aftemate)SHRIVIJAI,Director & Head (LTD)

[Representing Director General (Ex-ojjicio Member)]

Member-SecretarySHRIPRAVEENKUMAR

Assistarrt Director (LTD), BIS

,, ,

.-.

3

Bureau of Indian Standards

BIS is a statutory institution established under the Bureau of Indian Standards Act, 1986 to promoteharmonious development of the activities of standardization, marking and quality certification of goodsand attending to connected matters in the country.

Copyright

BIS has the copyright of all its publications. No part of these publications may be reproduced in any formwithout the prior permission in writing of BIS. This does not preclude the free use, in the course ofimplementing the standard, of necessary details, such as symbols and sizes, type or grade designations.Enquiries relating to copyright be addressed to the Director (Publications), BIS.

Review of Indian Standards

Amendments are issued to standards as the need arises on the basis of comments. Standards are also reviewedperiodically; a standard along with amendments is reaffirmed when such review indicates that no changes areneeded; if the review indicates that changes are needed, it is taken up for revision. Users of Indian Standardsshould ascertain that they are in possession of the latest amendments or edition by referring to the latest issue of‘BIS Catalogue’ and ‘Standards: Monthly Additions’.

This Indian Standard has been developed ffom Doc : No. LTD 5 ( 1871 ).

Amendments Issued Since Publication

Amend No. Date of Issue Text Affected

BUREAU OF INDIAN STANDARDS

Headquarters :

Manak Bhavan, 9 Bahadur Shah Zafar Marg, New Delhi 110002 Telegrams : ManaksansthaTelephones :3230131,3233375,323 9402 (Common to all offices)

Regional Offices : Telephone

Central : Manak Bhavan, 9 Bahadur Shah Zafar Marg

{

3237617NEW DELHI 110002 3233841

Eastern : 1/14 C.I.T. Scheme VII M, V. I. P. Road, Kankurgachi

{

3378499,3378561KOLKAT~ 700054 3378626,3379120

Northern : SCO 335-336, Sector 34-A, CHANDIGARH 160022

{

603843602025

Southern : C.I.T, Campus, IV Cross Road, CHENNAI 600113

{

2541216,25414422542519,2541315

Western : Manakalaya, E9 MIDC, Marol, Andheri (East)

{

8329295, 8327858MUMBAI 400093 8327891,8327892

Branches : AHMEDABAD. BANGALORE. BHOPAL. BHUBANESHWAR. COIMBATORE.FARIDABAD. GHAZIABAD. GUWAHATI. HYDERABAD. JAIPUR, KANPUR.LUCKNOW. NAGPUR. NALAGARH. PATNA. PUNE. RAJKOT. THIRUVANANTHAPURAM.

Printed at Pmbhat Offset Press, New Delhi-2