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Museum : Rocky Mount Instruments (RMI) Room : Model 200 Rock-Si-Chord
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RMI Instruments
Model 100 Rock-si-chord
Model 200 Rock-si-chord
Series 300 Electra Piano and Harpsichord
Series 400 Electra Piano and Harpsichord
Series 600 Electra Piano and Rock-si-chord
Band Organ
Calliope (Model B)
Calliope
Digital Keyboard 20 (DK-20)
Explorer/Explorer II
Harmonic Synthesizer
Keyboard Computer I (KC-1)
Keyboard Computer II (KC-2)
Lark Combo Organ




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Model 200 Rock-Si-Chord

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. Manufacturer:
Rocky Mount Instruments, Inc.

Model:
Model 200 Rock-Si-Chord

Production period:
1968-?

Quantity produced:


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The Rock-Si-Chord models were introduced in 1967. The two basic models were the model 100 and model 200. The main difference was that the model 100 had a single set of individual ton generators (one tone generator for each of its 49 notes) tuned at an eight foot pitch, while the model 200 had two sets of individual tone generators, one tuned at an 8-foot pitch and one tuned at a 4-foot pitch. All the models were designed as percussive instruments, which means that the tone will decay after the key is depressed. There is no organ stop on these instruments. All models were painted blue. All models were designed to be used with an external amplification system.

Model 200: The 200 series, as explained above, consisted of two individual oscillators per note. The original model was built into a case similar to the 100 model except that the height dimension was larger, to accommodate the second tone generator. In addition to the lute and string voices, the unit incorporated an accentor stop. This feature was not a voice by itself, but shortened the decay characteristics of the 4 foot voices. The instrument came equipped with a single expression show. The output balance between the two generators was accomplished by adjusting the two volume controls located on the voicing panel. The list price on the model 200 was $995.

Model 200A: The Model 200A was similar in its electronic design to be model 200, exceptions being that the case had the familiar RMI design, additional voices were added, and the unit had individual expression shoes. The voices available are listed below.

Lute 8 Lute 4
Elect. Guitar A 8 Elect. Guitar A 4
Elect. Guitar B 8 Elect. Guitar B 4
Cembalo 8 Cembalo 4
Harpsi 8 Harpsi 4
Tamboura 4
Accentor 4

The retail price of the 200A was $1195.

Model 200B: The model 200B was similar in design to the 200A. The unit came equipped with individual expression pedals for controlling the volume of the separate tone generators. The 4-foot voicing stops were green in color, instead of white. The 200B was a limited production model, as it was soon to be replaced by an entirely new model, called the Electra Piano. The list price of this model was $1245.

[written by Tom Emerick, Allen Organ Company]



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