There are three of these speakers available. I used to sell Johannus organs. These are remaining new stock. They actually have better sound than the current ULs that are sold with new organs due to larger box and low frequency driver size. The sound is fuller and richer. It is also the newer version (upgraded) from the earlier 2200's. There are three discrete drivers improving the sound quality and tone. Original price was $300 each. They were sold originally for the Opus model series for external operation.