What is :DIN i.e.Low-Frequency Extension 43 Hz

I have seen some speakers rated i.e:

Low-Frequency Extension* 43 Hz (DIN)

What does DIN stand for?

Thanks

bokfudo02-19-2010 11:59pm

hifitime Details Discussions Posts This discussion Message User 715 posts 02-20-2010 at 04:11am Copy Comment URL Report Comment Edit Delete Its a European standard.I can't remember +-how many db.Somebody else may have better info.LINK>>>[http://en.wikipedia.org/wiki/Deutsches_Institut_f%C3%BCr_Normung] by Hifitime
kijanki Details Discussions Posts This discussion Message User 4,428 posts 02-20-2010 at 05:19am Copy Comment URL Report Comment Edit Delete Deutsches Institut für Normung (German Institute for Standardization) Audio is covered by DIN 45500.