ZHow - The A-B-C Speaker Test Rig (Patreon)

ZHow - The A-B-C Speaker Test Rig

Figured somebody would ask how I do that. Well there it is. This system may get some updates as we go on. Using this Fosman Keyboard [http://amzn.to/18bxEuN] My alternative choice was buying this thing [http://amzn.to/1FJhRi2] and then modifying it to control levels, ugh.