The Juke-Boxes
4. The Ditchburn Mk2R Music Maker 30
Technical & Schematics.
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The MK2R Electrical Schematics
Ditchburn Mk2R Amplifier Drawing ( incomplete )  
The Ditchburn MK2R Music Maker used the acos GP-20 style of Tonearm and HGP 39-1 LP Crystal Pickup
The Cartridge uses a crystal and replaceable Stylus
A 1956 Review of the HGP39-1  pickup  part 1
A 1956 Review of the HGP39-1  pickup  part 2
Advertisement of Acos products
Acos announcement  regarding its tone arms
The BTH. British Thomson-Houston Co Ltd amplifier fitted to MK2 Music Makers
The underside of BTH. British Thomson-Houston Co Ltd amplifier.
Information on how the pickup works ( excerpt from the 1956 Gramophone Handbook )
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