Duplex
Added by jpvanson
Series 27
| Title | Function | Dates_produced | |
|---|---|---|---|
 | 601 | Speaker | 1943-1944 |
 | 604 | Speaker | 1944 |
 | 604-168X | Speaker | 1981 |
 | 604-16X | Speaker | 1981 |
 | 604-8E II Super Duplex | Speaker | 2018 |
 | 604-8G | Speaker | 1975 |
 | 604-8G (Tangerine) | Speaker | 1976 |
 | 604-8H | Speaker | 1978 |
 | 604-8H-II | Speaker | 2005 |
 | 604-8H-III | Speaker | 2009-2016 |
 | 604-8H-III, Rev. II | Speaker | 2016 |
 | 604-8K | Speaker | 1982 |
 | 604-8KS | Speaker | 1982 |
 | 604-8L | Speaker | 2003 |
 | 604-E2 | Speaker | 1978 |
 | 604-HPLN | Speaker | 1978 |
 | 604A | Speaker | 1945 |
 | 604A (Rev. 2) | Speaker | 1947 |
 | 604B | Speaker | 1947 |
 | 604C | Speaker | 1952 |
 | 604D | Speaker | 1957-1959 |
 | 604E | Speaker | 1964 |
 | 604E (Audiotechniques) | Speaker | 1977 |
 | 615B | Speaker | 197? |
 | 615B/A | Speaker | 1971 |
 | 704-8A | Speaker | 2001-2005 |
 | 904-8A | Speaker | 1983 |