I recently bought three Feit GU5.3 compact fluorescent (CF) MR16 bulbs to replace three 50w halogen bulbs in a display cabinet. I know they don't have the output of halogens, but they are dim, dim, dim! The Feit CFs are 12V bulbs, and the cabinet has a Hatch VS12-15 transformer (no dimmer) which I think should be just fine. But is that the issue, or is it just that these CF bulbs just don't have the lumen output? When I say they're dim, I mean they have a fraction of the brightness of the halogens. Thanks.