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Brief overview of three electronic organ technology approaches: analog, quasi-digital, and digital sound memory.
Details the Wersi DX system using a microprocessor for sound computation and digital-to-analog conversion.
Explains the block diagram of the complete DX organ series and the master/slave processor architecture.
Details the routing of audio signals from slaves to audio channels for processing like superdeemphasis and VCF effects.
Describes digital rhythm instruments, digital reverb unit, and the organ's interface capabilities.
Details the pin layout of the backplane board MB 30 and schematic diagrams of plug-in boards.
Provides schematic diagrams for control panel PC boards including slide controls, switches, and drawbars.
Details schematic diagrams for peripheral PC boards not directly involved in tone generation.
Describes the three basic functions of the MB 30 PC board: mechanical support, electrical connection, and connector carrying.
Details the PS 12 board, which develops all voltages for the DX organs, including +5V, -10V, and -15V.
Explains the AF 12 board's analog processing for all organ audio tone signals and external sources.
Details the DH 10 board's digital reverb processing, including sample-and-hold, ADC, CPU control, and RAM.
Describes the Wersivoice circuit, consisting of bucket brigade chips, VCOs, and analog switches for deep/flat functions.
Explains the Voltage-Controlled Filter (VCF) input, its function as bandpass/lowpass, and interaction with Wersivoice.
Details the interface between master bus, special effects, and EF20 board via address decoder and digital-to-analog conversion.
Explains the RS232 interface IC for converting parallel data to serial and vice-versa, including TTL drivers.
Describes the cassette interface for converting data to serial for recording and reconverting incoming serial data.
Details the DDS 3 board's rhythm generation, using digital sound modules, DAC, and demultiplexers for audio channels.
Provides instructions for testing slave processors (SL 3) and checking each voice for monophonic output and potential issues.
Details the MST 3 board, functioning as the master processor with CPU, RAM, EPROM, and peripheral interfaces.
Explains how CB boards continuously poll control switches via CPU on MST 3 for function initiation and LED illumination.
Describes the principle of time measurement for keyboard action and pedal switch polling.
Details the dynamic perception of keyboard action via time measurement of key contact switching.
Explains pedal switching matrix polling, with schemes selected by organ type and jumpers.
Extends key contact matrices based on the number of octaves (KD4 for 4, KD2 for 5).
Details interface circuitry for MIDI, RS232, and audio output, and the ST 15's swell pedal detection.
Covers interfaces for microphone, headphones, and tape recorder, differing by organ model.
Covers the TS 5 triac switch and PA 10 power amplifier, including their operation and components.
Explains the triac switch TS 5, which acts as a low-level activated relay for switching high line voltage.
Details the PA 10 board's power supply for hybrid amplifiers, speaker switch relay, and discrete components.
Brief overview of three electronic organ technology approaches: analog, quasi-digital, and digital sound memory.
Details the Wersi DX system using a microprocessor for sound computation and digital-to-analog conversion.
Explains the block diagram of the complete DX organ series and the master/slave processor architecture.
Details the routing of audio signals from slaves to audio channels for processing like superdeemphasis and VCF effects.
Describes digital rhythm instruments, digital reverb unit, and the organ's interface capabilities.
Details the pin layout of the backplane board MB 30 and schematic diagrams of plug-in boards.
Provides schematic diagrams for control panel PC boards including slide controls, switches, and drawbars.
Details schematic diagrams for peripheral PC boards not directly involved in tone generation.
Describes the three basic functions of the MB 30 PC board: mechanical support, electrical connection, and connector carrying.
Details the PS 12 board, which develops all voltages for the DX organs, including +5V, -10V, and -15V.
Explains the AF 12 board's analog processing for all organ audio tone signals and external sources.
Details the DH 10 board's digital reverb processing, including sample-and-hold, ADC, CPU control, and RAM.
Describes the Wersivoice circuit, consisting of bucket brigade chips, VCOs, and analog switches for deep/flat functions.
Explains the Voltage-Controlled Filter (VCF) input, its function as bandpass/lowpass, and interaction with Wersivoice.
Details the interface between master bus, special effects, and EF20 board via address decoder and digital-to-analog conversion.
Explains the RS232 interface IC for converting parallel data to serial and vice-versa, including TTL drivers.
Describes the cassette interface for converting data to serial for recording and reconverting incoming serial data.
Details the DDS 3 board's rhythm generation, using digital sound modules, DAC, and demultiplexers for audio channels.
Provides instructions for testing slave processors (SL 3) and checking each voice for monophonic output and potential issues.
Details the MST 3 board, functioning as the master processor with CPU, RAM, EPROM, and peripheral interfaces.
Explains how CB boards continuously poll control switches via CPU on MST 3 for function initiation and LED illumination.
Describes the principle of time measurement for keyboard action and pedal switch polling.
Details the dynamic perception of keyboard action via time measurement of key contact switching.
Explains pedal switching matrix polling, with schemes selected by organ type and jumpers.
Extends key contact matrices based on the number of octaves (KD4 for 4, KD2 for 5).
Details interface circuitry for MIDI, RS232, and audio output, and the ST 15's swell pedal detection.
Covers interfaces for microphone, headphones, and tape recorder, differing by organ model.
Covers the TS 5 triac switch and PA 10 power amplifier, including their operation and components.
Explains the triac switch TS 5, which acts as a low-level activated relay for switching high line voltage.
Details the PA 10 board's power supply for hybrid amplifiers, speaker switch relay, and discrete components.
General| Sequencer | Yes |
|---|---|
| Display | LCD |
| Built-in Speakers | Yes |
| Type | Digital Organ |
| Keyboard | 61 keys |
| Sound Generation | Digital synthesis |
| Voices | Presets |
| Effects | Reverb, Chorus |
| Power Supply | AC |
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