Presentation Scenarios

Ideally will be a tabletop type presentation. I want to be able to have it about waist height, so you can lean over and observe the patterns easily. This also needs to be combined with enough distance to mask the peripheral audio leak from the speaker units.

Equipment List:
4 speakers
4 Membranes
Base mounting board for speakers/membranes
Stereo Amp
iPod or Laptop powering audio.
Light.