Today I converted 10 spotlights the Microline series from Paulmann with the LED bulbs. The conversion was no problem, but had to because of the larger diameter of the LED Leuchkörper the shields are removed, what the radiator in the off state, by design, a bit of what takes. One has the impression a thick bumblebee sits in the housing. In light of this effect is imperceptible because of the glare. Both emitter rows are spaced to each other, therefore, one can compare the light output well. The light output is compared to the previously built 20 W G4 luminaires minimally weaker -Maybe deshalb- because the LED light comes a bit warmer. Because the current AC transformer must be operated with a base load of 35 watts, was respectively a 20 W left in the arrangement of the lamps G4 lamp in operation, so dieTrafos cause any problems. In other words, even the mixed farm of 12 volts AC is quite possible. If this modern lamp with the life and the switching cycles (staircase lighting) also can not keep up, then this is a super product that absolutely 5 star deserves. Assessing my admittedly falls a little hard after 4 hours trial run. Even without knowledge of the life, the product is recommended in each case. On occasion I'll buy the plant still a 12 volt fixed voltage source without base load, the service life is not limited by this site.