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ARP Explorer 1 Synthesizer Keyboard Model 2900

   (1 review)
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Description
Synthesizers can generally be classified in one of two ways - preset or variable. While preset models are usually noted for their ease of operation and quickness in changing settings. The variable-performance synthesizers normally permit more flexibility in creating a variety of sounds. The ABP Explorer 1, a unique instrument among synthesizers, combines both preset and variable characteristics into one instrument capable of meeting the demands of live performance while at the same time providing further opportunity to discover and refine electronic sounds and effects that will reflect your own personal taste. Explorer 1 can create traditional instrumental sounds such as flutes, clarinet, and trumpets as well as un-pitched effects like crashing surf, thunder, whistling wind and countless indescribable electronic sounds. In addition, the Explorer l offers a choice of basic wave-forms and pitch ranges which may be combined additive to produce a “heavy” sound that's unique to the Explorer 1.
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Technical Specifications
Type: Analog
Synthesis: Subtractive
Oscillators: 1
Waveforms: Pink Noise, Pulse, Saw Up, Square
Osc Modulation: Envelope, Keyboard, LFO
Envelopes: 1
Evelope Paramerters: Attack, Decay, Sustain, Release
Filters: 1
Types: 24dB Slope (4-pole), Low Pass, Resonance
Filter Modulation: Envelope, Keyboard, LFO
LFO: 1
LFO Parameters: Triangle, Delay
Polyphony & Tuning
Polyphony: 1
Timbrality: 1
Tuning: Standard
Patches
Patches RAM: 1
Patches ROM: 8
Editing: CV
Case
Case: Keyboard
Keyboard: 37 keys, Non-weighted, Plastic
Controls: Faders, Mod - Wheel
Connections
Audio Output Connections: 1/4" Phone Jack, Mono Out
Audio Output Count: 2
Audio Output Notes: Hi and Low outs
CV Ports: CV OUT, Gate In
Production
Year Released: 1974
Year Discontinued: 1978
Manuals & Documents
Patch Sheet

Product Links
Company Product Sites:
[+] www.arpexplorer.com
Pricing
MSRP List Price: $995 - convert
Retail Street Price: $900 - convert
Used Price: $500 - $650 - convert
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lucasasdelli

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I own one of these strange instruments, and I've completely restored and tuned it.

Quite interesting are the VCO, made with the same 4027-1 module used on 2600 (but with a sawtooth derived from a pulse octave cascading instead of the module output), and a 4034 VCF, the transistor ladder Moog clone, subsequently replaced with the 4075 module. Therefore this little preset thing has a powerful structure under the hood, and it is capable to generate interesting sounds using the manual controls.

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