Realton 'Variophon' Sound-Modules
Note: Research of the Variophon Standard has been stopped due to leak of time in 2014.
The Variophon uses various Sound-Modules which are potted in compound. The coumpount can be removed for research or service, but this is quite complicated and time-consuming.
Variophon Oboe Sound-Module
Realton 'Variophon' Oboe sound-module
Realton 'Variophon' Oboe sound-module trimmers
Variophon sound-module placed in acetone
Removal of the first acetone soaked potting layer (Variophon sound-module)
Removal of the second acetone soaked potting layer (Variophon sound-module) after another 24hours
Removal of the second acetone soaked potting layer (Variophon oboe sound-module)
Detail of potting removal of oboe sound module (Realton Variophon)
Detail of potting removal of oboe sound module (Realton Variophon) board bottom side
Detail of potting removal of oboe sound module (Realton Variophon) board top side
Detail of potting removal of oboe sound module (Realton Variophon) board top side; note the removed resistor-markings
Detail of rewired oboe sound module bottom side (Realton Variophon)
Reassembled Variophon Oboe module after potting compound removal (top view)
Cabling for testing the reassembled oboe sound board (Realton Variophon)
Detail of cabling for testing the reassembled oboe sound board (Realton Variophon)
Detail of cabling for testing the reassembled oboe sound board (Realton Variophon)
Detail of cabling for testing the reassembled oboe sound board (Realton Variophon), bottom side
Variophon Oboe Sound-Module PCB
Variophon Oboe Sound-Module Schematics
Variophon Tuba Sound-Module
