We present the outcomes of a series of room impulse response (IR) measurements. We have recorded binaural, Ambisonic-encoded and regular stereo/mono IRs of multichannel loudspeaker arrays in various concert halls in Austria, Northern Ireland, Germany and New Zealand. The resulting IRs and accompanying documentation have been made publicly available on a website for composers to use in the production and documentation of their multichannel pieces. The paper also discusses several custom-written shell scripts and extensions to the Aliki and Jconvolver software packages, which we have developed for the production of the presented IRs.