Why do stadium organs sound different than regular organs? ARE they different?

How about a custom-made organ built into a house? « Into », not « in ». There was a fellow in our city who was enthusiastic about organ music and custom built a pipe organ into the basement, walls, and ground floor of his house. Did it over several years, constantly tinkering and installing new, old, and custom parts.

(@74westy , did you see this article?)