Inside the RAI Musical Phonology Studio

The Phonology Studio, a musical instrument of the twentieth century, an extension of human thought, has now found its ideal home in the Museo degli Strumenti Musicali of Castello Sforzesco, Milan.

RACK 1

• Patchbay (made by RAI)

RACK 2

• Brüel & Kjær 1011 beat oscillator
• 6 Wavetek 110 oscillators
• 2 Wavetek 115 oscillators
• Heathkit AG 10 oscillator
• General Radio 1398-A tone burst generator

RACK 3

• Brüel & Kjær 1402 white-noise generator
• SIAE 431A oscillator
• Elit MOD 201/D millivoltmeter amplifier
• Nine-input mixer (made by RAI)
• Comparator (made by RAI)
• 2 continuous-loop Appel 311 cassette players

RACK 4

• Unit with 7 slots:

• 2 ring modulators (made by RAI)
• 1 amplitude selector (made by RAI)
• 2 ring modulators for the frequency transposer (made by RAI)
• 1 electronic selector switch (made by RAI)
• 1 empty

• Dynamic modulator (made by RAI)
• Amplitude selector (made by RAI)
• Frequency transposer (made by RAI)

RACK 5

• Unit with 7 slots:

• 1 amplifier Auso Siemens ELA 75-0 for 8-input mixer (made by RAI)
• 5 empty
• 1 power supply Auso Siemens ELA 23-03

• Hewlett-Packard 3591 selective voltmeter + Hewlett-Packard 3594A oscillator with frequency meter
• Patchbay (made by RAI)
• Eight-input mixer (made by RAI)
• Band-pass frequency filter Krohn-Hite 310-A
• Band-pass frequency filter Krohn-Hite 310-AB

RACK 6

• Octave filter bank (made by RAI)
• Bass-pass filter bank (made by RAI)
• Treble-pass filter bank (made by RAI)

RACK 7

• For future improvements

RACK 8

• 5 OSAE P20 T amplifiers
• Patchbay
• 2 OSAE P20 T amplifiers

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