Hi John Although your reasoning sounds valid, it's simply not accurate. Firts; The guidelines are not LAW
"Guidelines are publicly available, but they are not binding in the sense of legal acts adopted by the Community. The legally binding provisions are those transposing the EMC Directive" The EMC directive (=LAW) speaks about : "apparatus liable to cause electromagnetic disturbance" What an we say about the properties of a passive speaker system: A speaker is no other then a cable, when it comes to creating magnetic fields. A cable is not to be evaluated either when it comes to EMC. It cannot create interference by itself when put into service by the end user. It's the connected equipment (here amplifier) that determines the EMC properties of the speaker. That the application demands the applicaton of an amplifier that WILL create magnetic fields within the speakers filter is irrelevant. It will create a EMC problem though for the installation consisting of amplifier + speaker (if there were requirements for low frequency H-fields for speakers). Installations are by the same guideline exempted from ce marking. So does the speaker. An assessment need to be made by the owner/installer of the installation. He also is responsible. This means that is the speakers are part of an delivered installation, then they are subject to such an assessment. If they are sold separately, they are not. Gert Gremmen , ce-test, qualified testing -----Original Message----- From: [email protected] [mailto:[email protected]]On Behalf Of John Woodgate Sent: Tuesday, September 17, 2002 11:15 PM To: [email protected] Subject: Re: CE Marking for Passive speakers I read in !emc-pstc that Gert Gremmen <[email protected]> wrote (in <[email protected]>) about 'CE Marking for Passive speakers' on Tue, 17 Sep 2002: >Officially this type of "apparatus" does not qualify >for ce marking due to the reasons you gave. That is simply not correct. EN 60065 specifies the safety requirements. The EMC Guidelines document explains that having no active components is NOT grounds for exemption from the EMC Directive. While most loudspeakers do not emit anything except constant magnetic field, some have crossover inductors with open ferrite cores. These emit audio-frequency magnetic fields which are quite strong enough to disturb a CRT display significantly. That there are no limits for this is due to CISPR/E (now CISPR/I) having more important matters to work on. -- Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk Interested in professional sound reinforcement and distribution? Then go to http://www.isce.org.uk PLEASE do NOT copy news posts to me by E-MAIL! ------------------------------------------- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. Visit our web site at: http://www.ewh.ieee.org/soc/emcs/pstc/ To cancel your subscription, send mail to: [email protected] with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Ron Pickard: [email protected] Dave Heald: [email protected] For policy questions, send mail to: Richard Nute: [email protected] Jim Bacher: [email protected] All emc-pstc postings are archived and searchable on the web at: http://ieeepstc.mindcruiser.com/ Click on "browse" and then "emc-pstc mailing list" ------------------------------------------- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. Visit our web site at: http://www.ewh.ieee.org/soc/emcs/pstc/ To cancel your subscription, send mail to: [email protected] with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Ron Pickard: [email protected] Dave Heald: [email protected] For policy questions, send mail to: Richard Nute: [email protected] Jim Bacher: [email protected] All emc-pstc postings are archived and searchable on the web at: http://ieeepstc.mindcruiser.com/ Click on "browse" and then "emc-pstc mailing list"
