Hi John,
Our 10W Mini Amplifier http://www.electronics-lab.com/projects/audio/016/index.html provides 1.9W into a 6 ohm speaker at clipping with a 12V supply. It is a mono amplifier project.
Our 22W Audio Amplifier http://www.electronics-lab.com/projects/audio/006/index.html provides 6.5W into each 6 ohm speaker at clipping with a 12V supply. It is a stereo amplifier.