| Photo | Description | Notes | 
| ELKA AMK 800Chromatic Midi Master Keyboard (1989)
Schematic diagramsBlock diagram
 PCB LAyouts
 Errata corrige
 | 25 pages | 
| ELKA Ancona 701Electronic Organ (1973)
Schematic diagrams | Large sheet(Blueprint - Folding)
 | 
| ELKA Ancona 501Electronic Organ (1973)
Schematic diagrams | Large sheet(Blueprint - Folding)
 | 
| ELKA Ancona 701Electronic Organ (1973)
Schematic diagrams | Large sheet(Blueprint - Folding)
 | 
| ELKA Artist 606Electronic Organ (1977)
Schematic diagramsBlock diagram
 PCB Layouts
 Illustrated photos (with position of PCBs)
 Errata corrige
 | 65 pages | 
| ELKA Artist 707Electronic Organ (1977)
Schematic diagramsBlock diagram
 PCB Layouts
 Illustrated photos (with position of PCBs)
 Errata corrige
 | 72 pages | 
| ELKA C39TChromatic Combo Organ (1982)
Schematic diagramsBlock diagram
 PCB Layouts
 | 39 pages | 
| ELKA C91Electronic Organ
Schematic diagramsBlock diagram
 PCB Layouts
 IC pinouts
 
 | 10 large pages
 | 
| ELKA C92Electronic Organ
Schematic diagramsBlock diagram
 PCB Layouts
 IC pinouts
 
 | 10 large pages
 | 
| ELKA C100Electronic Organ
Schematic diagramsBlock diagram
 PCB Layouts
 IC pinouts
 
 | 10 large pages
 Also for
 Gulbransen C-100
 | 
| ELKA C200Electronic Organ
Schematic diagramsBlock diagram
 PCB Layouts
 IC pinouts
 
 | 10 large pages
 Also for
 Gulbransen C-200
 | 
| ELKA C300Electronic Organ
Schematic diagramsBlock diagram
 PCB Layouts
 IC pinouts
 
 | 10 large pages
 Also for
 Gulbransen C-300
 | 
| ELKA C500Electronic Organ (1989)
Schematic diagramsBlock diagram
 PCB Layouts
 Errata corrige
 | 16 large pages
 Also for
 Gulbransen C-500
 | 
| ELKA C700Electronic Organ
Schematic diagramsBlock diagram
 PCB Layouts
 IC pinouts
 | 18 large pages
 Also for
 Gulbransen C-700
 | 
| ELKA C1000Electronic Organ (1989)
Schematic diagramsBlock diagram
 PCB Layouts
 IC pinouts
 PCBs list
 Errata corrige
 | 42 pages | 
| ELKA CR99Midi Disk Recorder
Schematic diagramsPCB Layouts
 | Large page | 
| ELKA CapriELKA Panther 300
 Combo Organs (1968)
Schematic diagrams | Large sheet(Blueprint - Folding)
 | 
| ELKA Capri JuniorELKA Panther 2100
 Combo Organs (1969)
Schematic diagrams | Large sheet(Blueprint - Folding)
 | 
| ELKA Capri 101Combo Organ (1975)
Schematic diagramsBlock diagram
 PCB Layouts
 | 17 pages | 
| ELKA Capriccio 33/OLSElectronic Organ (1976)
Schematic diagramsBlock diagram
 PCB Layouts
 | 19 pages | 
| ELKA Concorde 96Chromatic (Button) Combo Organ (1974)
Schematic diagramsBlock diagram
 | 4 pages | 
| ELKA Concorde 100Chromatic (Button) Combo Organ (1976)
Schematic diagramsBlock diagram
 PCB Layouts
 Illustrated photos (with position of PCBs)
 Spare parts Catalogue
 | 40 pages | 
| ELKA Concorde 119Chromatic (Button) Combo Organ (1982/83)
Schematic diagramsBlock diagram
 PCB Layouts
 Illustrated photos (with position of PCBs)
 Errata corrige
 | 37 pages | 
| ELKA Concorde 219Chromatic Combo Organ (1982)
Schematic diagramsBlock diagram
 PCB Layouts
 Illustrated photos (with position of PCBs)
 | 30 pages | 
| ELKA Concorde 405Chromatic Combo Organ (1984)
Schematic diagramsBlock diagram
 PCB Layouts
 Illustrated photos (with position of PCBs)
 IC pinouts
 | 43 pages | 
| ELKA Concorde 502Chromatic Combo Organ (1979)
Schematic diagramsBlock diagram
 PCB Layouts
 Illustrated photos (with position of PCBs)
 | 30 pages | 
| ELKA Concorde 602 (402)Chromatic Combo Organ (1976)
Schematic diagramsBlock diagram
 PCB Layouts
 | 33 pages(similiar to the 402)
 | 
| ELKA Concorde 750Chromatic Combo Organ (1989)
Schematic diagramsBlock diagram
 PCB Layouts
 Errata corrige
 | 33 pages | 
| ELKA Concorde 802Chromatic Combo Organ (1979 - 1st & 2nd ver.)
Schematic diagramsBlock diagram
 PCB Layouts
 Illustrated photos (with position of PCBs)
 | 66 pages | 
| ELKA Concorde 810Chromatic Combo Organ (1985)
Schematic diagramsBlock diagram
 PCB Layouts
 Illustrated photos (with position of PCBs)
 IC piouts
 Errata corrige
 | 67 pages | 
| ELKA Concorde 811Chromatic Combo Organ (1985)
Schematic diagramsBlock diagram
 PCB Layouts
 IC pinouts
 Illustrated photos (with position of PCBs)
 Errata corrige
 | 59 pages | 
| ELKA Concorde 902Chromatic Combo Organ (1979)
Schematic diagramsBlock diagram
 PCB Layouts
 IC pinouts
 | 63 pages | 
| ELKA ConsoletteElectronic Organ (1970)
Schematic diagrams | Large sheet(Blueprint - Folding)
 | 
| ELKA Consolette 202 PPortable Organ (1976)
Schematic diagramsBlock diagram
 |  6 pages | 
| ELKA Crescendo 303Electronic Organ (1977)
Schematic diagramsBlock diagram
 PCB Layouts
 | 51 pages | 
| ELKA CUB 50Guitar Power Amplifier (1983)
Schematic diagramsBlock diagram
 PCB Layouts
 Errata corrige
 | 6 pages | 
| ELKA DMP 18Dynamic Midi Pedalboard (1987)
Schematic diagramsBlock diagram
 PCB Layouts
 IC pinouts
 Errata corrige
 | Large sheet(Folding)
 | 
| ELKA Drummer OneDrum Machine (1969)
Schematic diagrams | Large sheet(Blueprint - Folding)
 | 
| ELKA Drumstar 64Digital Rhythm Unit / Arranger
Schematic diagramsPCB Layouts
 | Large sheetDouble-face
 (Folding)
 | 
| ELKA Drumstar 80Digital Programmable Rhythm Unit / Arranger
Schematic diagramsPCB Layouts
 | Large sheetDouble-face
 (Folding)
 | 
| ELKA E8Electronic Organ (1982)
Schematic diagramsBlock diagram
 PCB Layouts
 | 20 pages | 
| ELKA E9Electronic Organ (1982)
Schematic diagramsBlock diagram
 PCB Layouts
 Illustrated photos (with position of PCBs)
 Errata corrige
 | 28 pages | 
| ELKA E19Electronic Organ (1982)
Schematic diagramsBlock diagram
 PCB Layouts
 Illustrated photos (with position of PCBs)
 | 30 pages | 
| ELKA E29Electronic Organ (1982)
Schematic diagramsBlock diagram
 PCB Layouts
 | 34 pages | 
| ELKA E39Electronic Organ (1982)
Schematic diagramsBlock diagram
 PCB Layouts
 Illustrated photos (with position of PCBs)
 Errata corrige
 | 41 pages | 
| ELKA E49Electronic Organ (1982)
Schematic diagramsBlock diagram
 PCB Layouts
 Illustrated photos (with position of PCBs)
 Errata corrige
 | 48 pages | 
| ELKA EH105Electronic Keyboard (1987)
Schematic diagramsBlock diagram
 PCB Layouts
 IC pinouts
 | 10 pages | 
| ELKA EK22Programmable Synthesizer (1986)
Schematic diagramsBlock diagram
 PCB Layouts
 IC pinouts
 | 11 pages | 
| ELKA EK44Digital Programmable Synthesizer (1986)
Schematic diagramsBlock diagram
 Wiring connection
 PCB Layouts
 IC pinouts
 Errata corrige
 | 15 large pages | 
| ELKA Elka 18Electronic Organ (1981)
Schematic diagramsBlock diagram
 PCB Layouts
 Errata corrige
 | 33 pages | 
| ELKA Elka 20Electronic Organ (1980)
Schematic diagramsBlock diagram
 PCB Layouts
 | 30 pages | 
| ELKA Elka 30Electronic Organ (1980)
Schematic diagramsBlock diagram
 PCB Layouts
 | 41 pages | 
| ELKA ElkaPiano 88(Piano 88)
 Electric Piano (1973)
 (Octave Generation with TCA430)
Schematic diagrams | Large sheet(Blueprint - Folding)
 | 
| ELKA ElkaPiano 88(Piano 88)
 Electric Piano (1973)
 (Octave Generation with S2555/S2556)
Schematic diagramsPCB Layouts
 | Large sheet(Blueprint - Folding)
 | 
| ELKA ElkaPiano 88(Piano 88)
 Electric Piano (1976)
 (Octave Generation with MK50242)
Schematic diagramsBlock diagram
 PCB Layouts
 | 9 pages | 
| ELKA ElkaRhapsody 490(Rhapsody 490)
 String Machine (1974)
 (Octave Generation with S2555/S2556)
Schematic diagramsBlock diagram
 PCB Layouts
 | 10 pages | 
| ELKA ElkaRhapsody 490(Rhapsody 490)
 String Machine (1976-77)
 (Octave Generation with AY-1-0212)
Schematic diagramsBlock diagram
 PCB Layouts
 Errata corrige
 | 11 pages | 
| ELKA Rhapsody 610(ElkaRhapsody 610)
 String Machine (1974)
 (Octave Generation with S2555-S2556)
Schematic diagramsBlock diagram
 PCB Layouts
 | 6 pages | 
| ELKA Rhapsody 610(ElkaRhapsody 610)
 String Machine (1976)
 (Octave Generation with AY-1-0212)
Schematic diagramsBlock diagram
 PCB Layouts
 Errata corrige
 | 12 pages | 
| ELKA Rhapsody 610(ElkaRhapsody 610)
 String Machine (1976)
 (Octave Generation with MK50242)
Schematic diagramsBlock diagram
 PCB Layouts
 Errata corrige
 | 11 pages | 
| ELKA ElkaSolist 505(Solist 505)
 Synthesizer (1977)
Schematic diagramsBlock diagram
 PCB Layouts
 Spare parts catalogue
 Errata Corrige
 | 36 pages | 
| ELKA ElkaSolist 505Chromatic version
 Synthesizer (1977)
Schematic diagramsBlock diagram
 PCB Layouts
 | 22 pages | 
| ELKA ElkasongOrgan Teaching System Module (1981)
Schematic diagramsBlock diagram
 PCB Layouts
 Illustrated photos (with position of PCBs)
 | 10 pages | 
| ELKA Elkatone 50PPower Amplifier (1970)
Schematic diagrams | Large sheet(Blueprint - Folding)
 | 
| ELKA Elkatone 150PPower Amplifier (1971)
Schematic diagrams | Large sheet(Blueprint - Folding)
 | 
| ELKA Elkatone 350Leslie Power Amplifier (1981)
Schematic diagramsBlock diagram
 PCB Layouts
 Illustrated photos (with position of PCBs)
 | 9 pages | 
| ELKA Elkatone 610Leslie Power Amplifier (1975)
Schematic diagramsBlock diagram
 PCB Layouts
 | 11 pages | 
| ELKA Elkatone 615Leslie Power Amplifier (1974)
Schematic diagramsBlock diagram
 PCB Layouts
 | 8 pages | 
| ELKA Elkatone 700Leslie Power Amplifier (1979/81)
 (1st & 2nd version)
Schematic diagramsBlock diagram
 PCB Layouts
 Illustrated photos (with position of PCBs)
 Errata corrige
 | 13 pages | 
| ELKA ElkaTwin 61(Twin 61)
 Synthesizer (1981)
 (1st & 2nd version)
Schematic diagramsBlock diagram
 PCB Layouts
 Illustrated photos (with position of PCBs)
 | 22 pages | 
| ELKA ElkavoxElectronic Accordion (1970)
Schematic diagrams | Large sheet(Blueprint - Folding)
 | 
| ELKA Elkavox 77Electronic Accordion (1976)
Schematic diagramsBlock diagram
 PCB Layouts
 Updates & Errata corrige
 | 34 pages | 
| ELKA Elkavox 83(C39T)
 Electronic Accordion (1982)
Schematic diagramsBlock diagram
 PCB Layouts
 Illustrated photos (with position of PCBs)
 IC pinouts
 | 48 pages | 
| ELKA Elkavox F3Midi Electronic Accordion (1984)
Schematic diagramsBlock diagram
 PCB Layouts
 Illustrated photos (with position of PCBs)
 IC pinouts
 | 32 pages | 
| ELKA Elkavox S11Midi Electronic Accordion (1989)
Schematic diagramsBlock diagram
 PCB Layouts
 Errata corrige
 IC pinouts
 | 17 pages | 
| ELKA EM22Master Module PRogrammable Synthesizer
Schematic diagramsBlock diagram
 PCB Layouts
 | 11 Large pages | 
| ELKA EM44Master Module Digital Programmable Synthesizer
Schematic diagramsBlock diagram
 PCB Layouts
 Wiring connection
 IC pinouts
 | 13 Large pages | 
| ELKA (KIMBALL)EP1Electronic Organ (1984)
Schematic diagramsBlock diagram
 PCB Layouts
 Illustrated photos (with position of PCBs)
 Errata corrige
 | 17 pages | 
| ELKA EP2Electronic Organ (1983)
Schematic diagramsBlock diagram
 PCB Layouts
 | 19 pages
 Also for
 Kimball EP-2
 | 
| ELKA EP3Electronic Organ (1984)
Schematic diagramsBlock diagram
 PCB Layouts
 Illustrated photos (with position of PCBs)
 | 18 pages
 Also for
 Kimball EP-3
 | 
| ELKA EP4Electronic Organ (1984)
Schematic diagramsBlock diagram
 PCB Layouts
 Illustrated photos (with position of PCBs)
 | 20 pages
 Also for
 Kimball EP-4
 | 
| ELKA EP6Electronic Organ (1984/85)
Schematic diagramsBlock diagram
 PCB Layouts
 Illustrated photos (with position of PCBs)
 Errata corrige
 | 31 pages
 Also for
 Kimball EP-6
 | 
| ELKA EP8Electronic Organ (1984)
Schematic diagramsBlock diagram
 PCB Layouts
 Illustrated photos (with position of PCBs)
 Errata corrige
 | 35 pages
 Also for
 Kimball EP-8
 | 
| ELKA EP10Electronic Organ (1984)
Schematic diagramsBlock diagram
 PCB Layouts
 Illustrated photos (with position of PCBs)
 | 44 pages
 Also for
 Kimball EP-10
 | 
| ELKA EP12Electronic Organ (1985)
Schematic diagramsBlock diagram
 Wiring diagram
 PCB Layouts
 Illustrated photos (with position of PCBs)
 Disassembly procedures
 Measurements and adjustments
 IC pinouts
 | 73 pages
 Also for
 Kimball EP-12
 | 
| ELKA ER339-Voice Multitimbral FM Expander
Schematic diagramsBlock diagram
 PCB Layouts
 Wiring connection
 IC pinouts
 | 12 Large pages | 
| ELKA ER449+9 Voice Multitimbral FM Synthesizer
Schematic diagramsBlock diagram
 PCB Layouts
 Wiring connection
 IC pinouts
 | 13 Large pages | 
| ELKA Fisa Midi 2Midi Electronic Accordion
Schematic diagramsBlock diagram
 PCB Layouts
 | 15 pages | 
| ELKA International 2000Electronic Organ (1972)
Schematic diagrams | Large sheet(Blueprint - Folding)
 | 
| ELKA KM12Mixer, Equalizer and Vu-Meter
Schematic diagramsBlock diagram
 PCB Layouts
 | 9 Large pages | 
| ELKA Magic TouchElectronic Keyboard (1974)
Schematic diagramsPCB Layouts
 | 6 pages | 
| ELKA Micropiano 16Electric Piano (1982)
Schematic diagramsBlock diagram
 PCB Layouts
 Illustrated photos (with position of PCBs)
 Errata corrige
 | 15 pages | 
| ELKA Minuette 70Electronic Organ (1969)
Schematic diagrams | Large sheet(Blueprint - Folding)
 | 
| ELKA Minuette 99MTElectronic Organ (1976)
Schematic diagramsBlock diagram
 PCB Layouts
 | 17 pages | 
| ELKA MK55Midi Master Keyboard
Schematic diagramsWiring connection
 PCB Layouts
 IC pinouts
 Errata corrige
 | 9 Large pages | 
| ELKA MK76 / MK88IIMidi Master Keyboards
Schematic diagramsWiring connection
 PCB Layouts
 IC pinouts
 | 10 Large pages | 
| ELKA MK88Midi Master Keyboard
Schematic diagramsWiring connection
 PCB Layouts
 IC pinouts
 | 8 large pages | 
| ELKA Notturno 66 OLElectronic Organ (1976)
Schematic diagramsBlock diagram
 PCB Layouts
 | 22 pages | 
| ELKA OMB3Digital and Programmable accompaniment unit
Schematic diagramsBlock diagram
 PCB Layouts
 IC pinouts
 | 11 Large pages | 
| ELKA OMB5Digital and Programmable accompaniment unit
Schematic diagramsBlock diagram
 Wiring connection
 PCB Layouts
 IC pinouts
 | 15 Large pages | 
| ELKA OrchestraElectronic Organ (1974)
Schematic diagramsPCB Layouts
 | 10 pages | 
| ELKA PAL 100Combo Amplifier (1983)
Schematic diagramsBlock diagram
 PCB layout
 | 11 pages | 
| ELKA Panther 2150Combo Organ (1970)
Schematic diagrams | Large sheet(Blueprint - Folding)
 | 
| ELKA Panther 2200Combo Organ (1969)
Schematic diagrams | Large sheet(Blueprint - Folding)
 | 
| ELKA Panther 2250HOHNER Contessa 96
 Combo Organ (1970)
Schematic diagrams | Large sheet(Blueprint - Folding)
 | 
| ELKA PM8Mixer Power Amplifier with Vu-Meter
Schematic diagramsBlock diagram
 PCB Layouts
 | 8 pages | 
| ELKA PM12Mixer Power Amplifier with Vu-Meter and Equalizer
Schematic diagramsBlock diagram
 PCB Layouts
 Errata corrige
 | 12 pages | 
| ELKA Preludio 15Electronic Organ (1978)
Schematic diagramsBlock diagram
 PCB Layouts
 | 24 pages | 
| ELKA Preludio 22/LElectronic Organ (1976)
Schematic diagramsBlock diagram
 PCB Layouts
 | 26 pages | 
| ELKA Prestige IIElectronic Organ (1983)
Schematic diagramsBlock diagram
 PCB Layouts
 | 20 pages | 
| ELKA Rhythm MachineDrum Machine (1975)
Schematic diagramsPCB Layouts
 | 7 pages | 
| ELKA RIG 200Guitar Power Amplifier, Reverb and Equalizer (1983)
Schematic diagramsBlock diagram
 PCB Layouts
 Errata corrige
 | 12 pages | 
| ELKA RM100Power Amplifier (1976)
Schematic diagramsBlock diagram
 PCB Layouts
 | 7 pages | 
| ELKA RM 110Power Amplifier (1979)
Schematic diagramsBlock diagram
 PCB Layouts
 Illustrated photos (with position of PCBs)
 | 9 pages | 
| ELKA RM 140Power Amplifier with Reverb and Rotary (1981)
Schematic diagramsBlock diagram
 PCB Layouts
 Errata corrige
 | 11 pages | 
| ELKA SGP 150Bass Pedalboard (1986)
Schematic diagramsBlock diagram
 PCB Layouts
 IC pinouts
 | 8 pages | 
| ELKA SK 200APower Amplifier
Schematic diagramsPCB Layouts
 | Large sheet(Folding)
 | 
| ELKA SynthexSynthesizer (1983)
Schematic diagramsBlock diagram
 PCB Layouts
 | 22 pages | 
| ELKA The Sidekick 32Drum Machine (1982)
Schematic diagramsBlock diagram
 PCB Layouts
 Illustrated photos (with position of PCBs)
 Errata corrige
 | 11 pages | 
| ELKA TRZ 100Mixer, Reverb and Power Amplifier
Schematic diagramsPCB Layouts
 | Large sheet(Folding)
 | 
| ELKA Universal 100Guitar and Bass Organ Amplifier (1970)
Schematic diagrams | Large sheet(Blueprint - Folding)
 | 
| ELKA WilgamatRhythm and Bass Accompaniment - Drum Machine (1977)
Schematic diagramsBlock diagram
 PCB Layouts
 | 20 pages | 
| ELKA Wilgamat IIIRhythm and Bass Accompaniment - Drum Machine (1982)
Schematic diagramsBlock diagram
 PCB Layouts
 Illustrated photos (with position of PCBs)
 | 18 pages | 
| ELKA X15Combo Organ (1984/85)
Schematic diagramsBlock diagram
 PCB Layouts
 | 17 pages | 
| ELKA X25Combo Organ (1984)
Schematic diagramsBlock diagram
 PCB Layouts
 Illustrated photos (with position of PCBs)
 Errata corrige
 | 35 pages | 
| ELKA X30Combo Organ (1984)
Schematic diagramsBlock diagram
 PCB Layouts
 Illustrated photos (with position of PCBs)
 IC pinouts
 | 58 pages | 
| ELKA X35Combo Organ
Schematic diagramsBlock diagram
 PCB Layouts
 IC pinouts
 
 | 10 large pages | 
| ELKA X45Combo Organ
Schematic diagramsBlock diagram
 PCB Layouts
 IC pinouts
 | 18 large pages | 
| ELKA X50Combo Organ (1981)
Schematic diagramsBlock diagram
 PCB Layouts
 Illustrated photos (with position of PCBs)
 Errata corrige
 | 15 pages | 
| ELKA X55Electronic Organ (1975)
Schematic diagramsBlock diagram
 PCB Layouts
 | 22 pages | 
| ELKA X55PCombo Organ (1975)
Schematic diagramsBlock diagram
 PCB Layouts
 | 23 pages | 
| ELKA X109(X-19T)
 Combo Organ (1982)
Schematic diagramsBlock diagram
 PCB Layouts
 Illustrated photos (with position of PCBs)
 Errata corrige
 | 31 pages | 
| ELKA X605Combo Organ (1978)
Schematic diagramsBlock diagram
 PCB Layouts
 Illustrated photos (with position of PCBs)
 | 28 pages | 
| ELKA X705Combo Organ (1977/80)
Schematic diagramsBlock diagram
 PCB Layouts
 Illustrated photos (with position of PCBs)
 Errata corrige
 | 70 pages | 
| ELKA X1000Combo Organ (1989)
Schematic diagramsBlock diagram
 PCB Layouts
 IC pinouts
 Errata corrige
 | 42 pages |