The “Z” rule
On Rodgers instruments from the 1980s to the present, the serial is seven characters and starts with the letter Z. The small engraved plate hides under the keydesk, carrying a 2–5 digit model number next to that Z-serial. Everything without a Z-serial is older than the mid-1980s.
Where the serial lives
On pre-1980s instruments Rodgers scattered the number across four places, and technicians sometimes wrote it in permanent ink as well:
- under the keydesk;
- on the metal plate on the lower front of the console, where the keydesk rests on it;
- on the inner side walls — remove the back panel and look left and right;
- on the cross rail inside the top of the console, or on the inner keyboard deck.
The generations
- 1958 — company incorporated on May 1; among the first fully transistorized church organs in the world.
- 1960 — the move to Hillsboro, Oregon, and the largest electronic organ of its day in Portland’s Memorial Coliseum.
- 1966 — “Black Beauty”, the touring organ built for Virgil Fox.
- 1972 — first illuminated drawknobs; first successful marriage of pipes and electronics.
- 1962 onwards — solid-state amplification across the line; analog tone generation only.
- 1988 — Roland Corporation acquires Rodgers.
- 1990 (November 20) — the first digital Rodgers: the PDI line with paralleled DSP, the dividing line between analog and digital Rodgers.
- 1993–1999 — Digital Domain Expression, Voice Palette, then Trillium with quadraphonic acoustic modelling.
- 2015–2020 — Infinity II with wireless control, Inspire (2018), Imagine (2020).
The key consequence: Rodgers sold exclusively analog instruments until 1990 — two decades behind Allen’s digital 1971. A “digital-looking” Rodgers with chips is either a very late instrument or a retrofit.
How to date yours
- Serial starts with Z → 1980s or newer.
- No Z → analog era, mid-1980s or older.
- Use the generation list to bracket the decade; internal date codes on boards narrow it further.
- Exact year: Rodgers support with model and serial — the company (now part of Global Organ Group) still answers.