I’ve been working to improve the look and feel of a couple of my Bally / Stern favourites. After a couple of attempts over the past two years, I have a finally settled on an LED with a “neutral” colour temperature.
After a considering the benefits of making LED inserts in Warm and Cool configuration, I am very happy with the colour clarity given by the LEDs in the “Neutral” territory. The LEDs I have used have a CCT reference range of 4910K~5120K. These allow a good colour presentation inside green and blue inserts without making the colours too blue (as I feel cool LEDs can do).
The PLCC-2 package show an even light distribution without harsh spotting.
The boards are made with v-cut edges and can be separated into individual items easily by hand.