| Magnavox type, MEMBRA (Konski & Krueger) |  | 192?, full-range |
| G Fr 341, MEMBRA (Konski & Krueger) |  | 193?, full-range, 245 mm, moving-iron |
| G Fr 388, MEMBRA (Konski & Krueger) |  | 193?, full-range, 180 mm, moving-iron |
| G Pm 377, MEMBRA (Konski & Krueger) |  | 193?, full-range, 215 mm, permanent |
| G Pm 365, MEMBRA (Konski & Krueger) |  | 193?, full-range, 245 mm, permanent |
| AFR 354, MEMBRA (Konski & Krueger) |  | 193?, full-range X 6, 810 mm (hex box), permanent |
| MK 100, MEMBRA (Konski & Krueger) |  | 193?, full-range, 375 mm, field-coil |
| KL 51, Konski & Krueger |  | 194?, 2way, 405 mm bass + horn treble, field-coil |
| HL 57, Konski & Krueger |  | 194?, horn treble (5 k - 20 kHz), field-coil |
| O7 (O7a, O7b), Konski & Krueger |  | 194?, full-range, 315 mm, O7 and O7a are field-coil, O7b is permanent magnet |
| O15 (field-coil), Eckmiller (Konski & Krueger) |  | 1943 (1941), 2way coaxial, 315 mm, field-coil |
| O15 (permanent), Eckmiller (Konski & Krueger) |  | 1943, 2 way coaxial, 315 mm bass + horn treble, permanent |
| O15a, Eckmiller |  | 1950, 3 way coaxial, mechanical 2 way 315 mm bass + horn treble, field-coil |
O15b???
|
| 195?, unknown coaxial driver???, may be similar to O15a |
| O15c, Eckmiller |  | 195?, 3 way coaxial, mechanical 2 way 315 mm bass + horn treble, field-coil |
| O16, (Schulz) |  | 1956, 2 way coaxial, 315 mm bass + dome treble, Al-Ni-Co |
| Transient model from O16 to O17 |  | 196?, 2 way coaxial, 315 mm bass + dome treble, Al-Ni-Co |
| O17a, VEB Fernmeldewerk Leipzig (Schulz) |  | 1964, 2 way coaxial, 315 mm bass + dome treble, Al-Ni-Co |
| O18, Schulz |  | 1975, 2 way coaxial, 315 mm bass + dome treble, Al-Ni-Co |
are licenced. Thank you!