Equipment information
ARP Instruments Inc. Avatar 2221 Synthesizer
Manufacturer:
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Model:
Avatar 2221
Date:
1978
Category:
Group:
Description:
Information
The AVATAR is divided into two sections: Synthesizer and
Pitch Extractor/CV Generator.
The Synthesizer section is like the ARP Odyssey (in fact,
the AVATAR and Odyssey use several of the same printed
circuit boards). It consists of two voltage controlled
oscillators, a voltage controlled filter, a voltage
controlled amplifier, two envelope generators (ADSR and AR),
a low frequency oscillator, and a sample and hold circuit.
As with standard Keyboard synthesizers, the Synthesizer
requires a 1 V/ Octave control voltage, gate and trigger to
be played.
The Pitch Extractor/CV Generator translates the Guitar
string signals into the language of synthesizers: 1 V/Octave
control voltage, gate and trigger. Using the ARP Six Channel
(Hex) pickup, the string signals are multiplexed to one
output (last note played) and then transformed to a control
voltage. Since the Synthesizer is monophonic (single note),
only one string can be extracted and converted to a control
voltage at a time.
Manual Type:
Service Manual
Pages:
50
Size:
35.42 Mbytes (37144241 Bytes)
Language:
english
Revision:
Manual-ID:
90024
Date:
1978 01 01
Quality:
Scanned document, all readable.
Upload date:
2017 10 16
MD5:
7c2e78419b8a13196cd8b35cb8e44686
Downloads:
2356
Information
SECTION 1 General Information ... 1
SECTION 2 Theory of Operation ... 4
SECTION 3 Circuit Descriptions ... 7
SECTION 4 Test Points ... 15
SECTION 5 Trim Procedures ... 22
SECTION 6 Schematics & Assemblies ... 26
SECTION 7 Parts List ... 44