Will I really have to recalibrate something just after I replace my first bulb? Requested by Dave P. On Aug 15, 2019 You would not have to recalibrate your system When you replace the bulb. Nonetheless, where by it does out perform the vast majority of the Levels of competition https://archerdnyi29641.actoblog.com/37626742/epson-projector-bulb-problems-options