A word of caution though. Usually, at least here in The Netherlands, any lamps for this type of bulb, although it says 12 volt, is not 12 volt, but in most cases 11.5volt. Thus not achieving the light temeprature in kelvin. You an see the specsheet at solux for what the consequences are. I do not know if the solux provided lamps are indeed 12volt, simply because they are not purchaseable here in The Netherlands. Note: the bulbs themselves are.
By the way the diffusors are also not purchaseable here in Europe.