You need a setup or some repairs? Or you want to buy an instrument? My Google map lists luthiers specialized in the Double Bass, from all over the world.
You are a bass luthier and not listed yet? Just drop me a line.
Double Bass Universities in Germany
At my German language weblog www.kontrabassblog.de, I’ve put together a table with all Universities where you can study the double bass.
Jazz Jam Sessions
Another Google map lists Jazz Jam Sessions – mostly in Germany, so far, but suggestions are always welcome.
More about jazz jam here:) http://www.jazzclubsinberlin.com/jazz-jam-session.php