LINKS:

Pro Audio Organizations etc.:

Audio Enginnering Society
Prosoundweb
Pro Audio Reference
more....

Pro Audio Manufactures:

Yamaha
Harman Pro Group
Electro-Voice
Lake
Milab Microphones
XTA
Dynacord
Peavey
Sony
Klark Teknik
more....

Loudspeakers::

L-acoustics
Martin Audio
Adamson Pro Audio
Meyer Sound Lab
Eastern Acoustic Works
Community

Amplifiers:

Lab.gruppen
Crest Audio
Powersoft
QSC Audio
Camco
MC2
Crown
Douglas Self

Drivers:

B&C Speakers
Audax
SEAS
CIARE
Parts Express
DST
more....

Measurement:

Tektronix
Audio Precision
Hameg
Melissa
Wavecapture
more....

Patents:

Espacenet
US Patents
US Trademarks
Delphion
PRV

Business informations:

Finacial Times
Dagens Industri
Utrikespolitiska Institutet
UN Publications
CIA Publications
NASA