I doubt it's the same company, but Lambda made some nice old school regulated power supplies.

http://www.forceaudio.com/attachment.php?attachmentid=444&d=1170584410

Lambda acoustics made/makes woofers IIRC. Don't remember what, or if they made other types of drivers......
Didn't they do the Unity horn?

Lambda used to make decent high stroke woofers, they weren't a huge company, they were competitors with TC a while back, sort of....  Well they had similar products at least.  They kind of fell off the radar about 4-5 years ago, a few internet companies were selling thier subwoofers and kits with thier subwoofers (around the times when the original Adire Tempest and Shiva were real popular).  I have never personally used them, but used to hear alot of good things about them on the web.  They looked like they used fairly common parts and built decent woofers.