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Home-brewed Theremins ... and other strange devices

Realton 'Variophon' Sound-Modules

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.

Realton Variophon Standard Oboe Sound Module

Realton 'Variophon' Oboe sound-module

Variophon Standard Oboe Sound-Module trimmers

Realton 'Variophon' Oboe sound-module trimmers

Realton Variophon  Sound-Module acetone

Variophon sound-module placed in acetone

Realton Variophon  Sound-Module acetone potting

Removal of the first acetone soaked potting layer (Variophon sound-module)

Realton Variophon  Sound-Module acetone

Removal of the second acetone soaked potting layer (Variophon sound-module) after another 24hours

Realton Variophon  Sound-Module acetone oboe board

Removal of the second acetone soaked potting layer (Variophon oboe sound-module)

Realton Variophon  Sound-Module acetone oboe

Detail of potting removal of oboe sound module (Realton Variophon)

Realton Variophon  Sound-Module acetone oboe board

Detail of potting removal of oboe sound module (Realton Variophon) board bottom side

Realton Variophon  Sound-Module acetone oboe board

Detail of potting removal of oboe sound module (Realton Variophon) board top side

Realton Variophon  Sound-Module acetone potting

Detail of potting removal of oboe sound module (Realton Variophon) board top side; note the removed resistor-markings

Realton Variophon  Sound-Module rewired bottom

Detail of rewired oboe sound module bottom side (Realton Variophon)

Realton Variophon potting compound removal

Reassembled Variophon Oboe module after potting compound removal (top view)

Realton Variophon Standard Oboe Sound Module test

Cabling for testing the reassembled oboe sound board (Realton Variophon)

cabling test realton variophon oboe sound module

Detail of cabling for testing the reassembled oboe sound board (Realton Variophon)

cabling test realton variophon oboe sound module

Detail of cabling for testing the reassembled oboe sound board (Realton Variophon)

cabling test realton variophon oboe sound module

Detail of cabling for testing the reassembled oboe sound board (Realton Variophon), bottom side

 

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