After a splendid Music Hack Day London in 2011 we were lucky to be invited to a small tour in the National Physical Laboratory of London. Ian Butterworth was so kind to show us around and illustrate the impressive effects of the acoustic chambers they use for testing.
Roel, Carsten and Ian at Bertha Block in Berlin
Ian, Carsten and Roel went climbing at Bertha Bloc in Berlin. Source: https://www.instagram.com/p/kbszxhqtjI/