Bright LED Spotlights

I've gotten 10 pieces of these heaters in operation (in 2 bathrooms and in the garden)
In a bathroom, I had to replace because he could not cope with the low power loss of Led spotlights the transformer.
As long as one (of four) with halos tuned hung it was ok, when using 4 LEDs flickered.
This is but definitely the fact that the transformer with low power loss could not cope. Transformer replaced, all right.
In other Bad 3 of these radiators hanging on the old transformer, no problems! This old transformer incidentally provides AC voltage. So the spotlights come with AC clear (not necessarily a DC transformer needed).
The brightness is really good. The light color is slightly different than that of the halos (very slight purple tint), but subjectively alright. Above all, it is subjective even brighter than when using 20W halogen spotlights.