Brand  Wersi
Location of the manufacturer  Germany
Model  Concerto W3A
Serial number -
Date of construction  ca 1980
Type Entertainment/Jazz Organ
Dimension 54"/46.5"/28.5" (53" w/ Pedals),
Console only: 305 pounds, with bench and pedals: 390 pounds
Manuals 2 X 61 keys
Pedals

30 flat, radiating

Amplifier/ Speakers  2 X 70 Watt / Internal
Additional effects Piano Group: piano, celeste, banjo, etc.
Special Effects: VCF Wah-Wah, Sine percussion, etc
Rotary Speaker/String Orchestra effect: 2 WersiVoice units
Spring Reverb
Additional units -
Generator IC TOS, 8 octave square, master oscillator with dividers
Vibrato: 2 speeds, 3 intensities
"Slalom" (pitch glide), Transposer
Toneforming UM  (1st manual) : 13 ranks: 16', 8', 5-1/3', 4', 2-2/3', 2', 1-3/5', 1-1/3', 1-1/7', 1', 8/9', 4/5', 2/3'
11 drawbars (9 standard, 1-1/7' + 8/9' and 2/3' + 4/5')
22 stops: Principal 16', Cello 16', Horn 16', Accordion 16', Trombone 16', Saxophone 16', English Horn 8', Principal 8', Viola 8', Clarinet 8', Oboe 8', Schalmei 8', Trumpet 8', Flute 4', Violin 4', Nasat 2-2/3', Prinicpal 2', Third 1-3/5', Fifth 1-1/3', Piccolo 1', Cymbal 2 ranks, Mixture 4 ranks
fast/slow attack; 3 sustain levels
Toneforming LM (lower manual) 13 ranks: 16', 8', 5-1/3', 4', 2-2/3', 2', 1-3/5', 1-1/3', 1-1/7', 1', 8/9', 4/5', 2/3'
11 drawbars (9 standard, 1-1/7' + 8/9' and 2/3' + 4/5')
17 stops: Cello 16', Bourdon 16', Principal 16', Viola 8', Principal 8', Gedackt 8', Horn 8', Principal 4', Violin 4', Nasat 2-2/3', Prinicpal 2', Flute 2', Third 1-3/5', Fifth 1-1/3', Piccolo 1', Mixture 2 ranks, Mixture 4 ranks
fast/slow attack; 3 sustain levels
Upper Toneforming PD (pedal) 6 ranks: 16', 8', 4', 2', 1' + 1/2'
5 drawbars, 4 stops: Tuba 16', Trumpet 8', String bass 8', Bass Guitar 8'
2 sustain levels
Lower Keyboard Up to 2 voices mixable
Pedals Up to 2 voices mixable
Acc. Orchestra Any voices may be selected.
Voice Control

Total presets (TP) Total registration of the instrument accomplished at the press of a single button. The TP registration for the upper keyboard may be changed without altering lower keyboard or pedals. All voices playable on all keyboards, pedals and accompaniment orchestra.

Voice Memory Without external memory = up to 150 voices for Organ, 67 Rhythm instruments and variations
Memory Card System

Memory card allows unlimited external storage or :- Voices = Total presets = Rhythms = Accompaniments = Sequences.

Wersivoice

2 built-in Wersivoice, freely assignable. Also software simulated "Leslie" voices .

Wersimatic Rhythm Unit & Accompaniment

16 Bit technology (CD technique), 67 sampled instrument voices (expandable to 256 as new ICs are developed). 128 Steps or volume may be programmed for each instrument - each time it is struck. Timpani (Kettle Drum) on pedals.

Programmable rhythm length up to 256 bars (song mode). Intro, break, fill, ending - all freely programmable. Accompaniment (freely programmable) - up to 4 polyphonic voices. Tempomat :- Preset tempo may be stored for each rhythm.

MIDI

Synch : Send, receive synch functions. MIDI master functions. Parallel send - receive availability. 16 MIDI channels )one reserved for rhythms). MIDI number can be assigned to each registration switch

Amplifier

HI-FI Stereo amplifier of 2 x 100 watts 7 channel output. separate microphone pre-amplifier input.

Special Features

Direct connections between upper and lower sections of cabinet. Chorus effect for upper and lower keyboards and pedals. Octave pitch-bend for upper keyboard. Stereo digital reverberation. 3 degrees of real-time sustain. Various functions may be allocated to foot switches (sustain, rhythm start/stop etc.,), transposer with real-time setting, Wersichord (AOC), 80 character LCD Display.

Price (payed/ worth) -
De Wersi Concerto W3A is Wersi's model gelijk aan het Saturn model, maar in luxere kast uitvoering met een built in speaker systeem. Zoals Wersi het noemt: "tijdloos traditionele styling"

Features Wersi Concerto W3A

De Wersi Concerto W3A kan in  een later  stadium  andere specificaties bezitten, doordat diverse uitbouwpakket  werden geleverd, zoals o.a. de Ritmebox CX-1 een digitaal ritme, een effekt pakket, met b.v. sinus patch, wind en ruis effekten. ook  een tweede pianopakket voor het ondermanuaal,  uitgebreid met glisando effekten was tevens te verkrijgen.