Crossover Pass [SEP] continent
Crossover Pass
Crossover Pass is a pass between Gordon Glacier and Cornwall Glacier in the central part of the Shackleton Range in Antarctica. It was first mapped in 1957 by the Commonwealth Trans-Antarctic Expedition and so named because this pass, together with Gordon and Cornwall Glaciers, provides a sledging route across the Shackleton Range from north to south.
- 1985 Dec Cabinet: improved internal sealing and damping SN. 4825/6
- 1986 Apr Midrange units: harder rubber used for surround. SN. 4953/4
- 1987 Cabinet: Crossover moved to compartment in bottom of speaker. SN. 5575/6
- 1987 Sep Isobarik Sara 9 replaces Isobarik Sara
- 1988 Crossover: New 4 ohm external crossover fitted in stand. Facility for tri-wiring.
- 1988 "DMS" discontinued – "PMS" can be driven passively (4 ohm) or actively. SN.