http://www.tiscalinet.ch/cooltune/Projects/Menhir01.htm

http://www.transducerdirectory.info/

http://www.manger-msw.de

http://www.asraudio.de
 
http://www.auditory.org/postings/2000/421.html

http://www.hms-elektronik.com

http://users.skynet.be/accupulse

http://www.tnt-audio.com/intervis/manger_e.html

http://groups.yahoo.com/group/tannoy/messagesearch?query=ASR

Please visit the ASR fan Club http://groups.msn.com/ASREmitterUniversum