We have inheritated a set of lights that came without a cintroller, so I bought what I thought was a simple 4 channel light to sound controller to control the 2 sets of 4 par cans. Here it is;

We want it to work purely as a sound to light controller, but the 'speed' control doesn't turn off, just to a slower setting, which is ok, but between songs it still chases, which is really annoying. The speed control is a pot with three pins-i just wondered if it was possible to bridge 2 of the legs which would bypass the speed setting?
I'm pretty good with circuit boards (I used to build and mod them), but cant work this one out. Any help would be gratefully accepted!
Cheers
Roy