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- ARP_Quadra abstract "The ARP Quadra was a 61 key analog musical synthesizer produced by ARP Instruments, Inc. from 1978 to 1981. The machine combined pre-existing products: the Omni, Odyssey, a Solina-esque string unit, a phase shifter and a divide-down organ with ADSR, and a 4075 24 db low pass filter into one box. It has four sections. Bass is on the bottom two octaves, has two unison bass circuits (electric and string), with AR and a single pole low pass filter and a related AD envelope for cutoff. A string section is similar to the ARP Omni. Poly Synth, and a two voice Lead Synth similar to the Odyssey and a five way mixer with four unit outputs, a stereo pair, a line mono and an XLR out. There are 16 memory locations, but these do not provide storage of slider settings. The 8048 microcomputer and 128k of CMOS SRAM memory recalls 16 stored sets of on/off decisions about which waveforms and modulations are turned on in each of the four sections, and lead intervals. Using LEDs the player is visually directed to the sliders critical to the sound selected but their settings are not updated. This necessary tweaking and fine tuning is the weakness of the Quadra. Like the Moog Polymoog keyboard, the Quadra was not a true polyphonic. It used divide-down circuits for the Omni-style string section, including ADSR, LFO, filter and VCAs for the Polyphonic Synth section. Both Polyphonic Synth and string sections share the hollow wave button which changes waveforms for both sections. It has a simple arpeggiator for the lead section and memorizes intervals between the two lead VCOs. Vibrato, LFO and a fast square wave trill can be added to the arpeggiation. There are the two independent portamento rates for each VCO, whether locked together or in interval mode. This is useful in either multiple or single trigger mode. Outstanding is the rich lush phase shifter which creates stereo and includes harmonic resonance. Also uncommon is the ability to deploy sample and hold within the phaser. The sound is similar to the chorus of the Solina, though many users avow that the Quadra, due to its sonic texture and modulation controls, is the richest string machine ever made. The top three octaves of the keyboard have a mechanical touch sensor that can either pitch bend or impact brilliance and filter. Unique is the flat pedal feature which allows pedaling to dip individual notes and chords a semitone below so they rise to pitch with the envelope’s attack. Extensive CV/Gate facilities allow two external sequencers to independently control both the bass and the lead. It is capable of four independent outs, stereo out, mono, and mono XLR but hidden in the quad outs is TRS facility for processing and returning effects on individual parts of the four sections to be recombined with external audio at a built-in mixer, which includes an internal compressor circuit. Like all ARP synthesizers of this series (2800) its true character opens up with selective use of the optional foot pedals. The Quadra uses the typical ARP orange and black color scheme of the company's later years including the orange leather end pieces and the clean XLR out for DI console recording.".
- ARP_Quadra thumbnail ARP_Quadra.jpg?width=300.
- ARP_Quadra wikiPageExternalLink retrozone0402.asp.
- ARP_Quadra wikiPageExternalLink ARP%20QuadraSpec.pdf.
- ARP_Quadra wikiPageExternalLink arp_quadra.cfm.
- ARP_Quadra wikiPageExternalLink quadra.shtml.
- ARP_Quadra wikiPageID "5838219".
- ARP_Quadra wikiPageLength "4690".
- ARP_Quadra wikiPageOutDegree "21".
- ARP_Quadra wikiPageRevisionID "682329338".
- ARP_Quadra wikiPageWikiLink ARP_Instruments.
- ARP_Quadra wikiPageWikiLink Analog_synthesizer.
- ARP_Quadra wikiPageWikiLink Gate.
- ARP_Quadra wikiPageWikiLink Category:ARP_synthesizers.
- ARP_Quadra wikiPageWikiLink David_Gilmour.
- ARP_Quadra wikiPageWikiLink David_and_the_Giants.
- ARP_Quadra wikiPageWikiLink Genesis_(band).
- ARP_Quadra wikiPageWikiLink Joe_Zawinul.
- ARP_Quadra wikiPageWikiLink John_Carpenter.
- ARP_Quadra wikiPageWikiLink Kansas.
- ARP_Quadra wikiPageWikiLink Kerry_Livgren.
- ARP_Quadra wikiPageWikiLink Moog_synthesizer.
- ARP_Quadra wikiPageWikiLink New_Order.
- ARP_Quadra wikiPageWikiLink Paul_Davis_(singer).
- ARP_Quadra wikiPageWikiLink Pink_Floyd.
- ARP_Quadra wikiPageWikiLink Polymoog.
- ARP_Quadra wikiPageWikiLink Richard_Wright_(musician).
- ARP_Quadra wikiPageWikiLink Subtractive_synthesis.
- ARP_Quadra wikiPageWikiLink Tony_Banks_(musician).
- ARP_Quadra wikiPageWikiLink Weather_Report.
- ARP_Quadra wikiPageWikiLinkText "ARP Quadra synthesizer".
- ARP_Quadra wikiPageWikiLinkText "ARP Quadra".
- ARP_Quadra wikiPageWikiLinkText "Quadra".
- ARP_Quadra attenuator "Decay , AR , ADSR , ADSASR".
- ARP_Quadra dates "1978".
- ARP_Quadra extControl Gate.
- ARP_Quadra fx "1".
- ARP_Quadra imageCaption "ARP Quadra".
- ARP_Quadra keyboard "61".
- ARP_Quadra leftControl "Portamento VCO1, Portamento VCO2".
- ARP_Quadra lfo "Triangle, Square".
- ARP_Quadra memory "Panel Switch state, Octave, Osc. Interval".
- ARP_Quadra oscillator "4".
- ARP_Quadra polyphony "12".
- ARP_Quadra synthManufacturer ARP_Instruments.
- ARP_Quadra synthName "Quadra".
- ARP_Quadra synthesisType Analog_synthesizer.
- ARP_Quadra synthesisType Subtractive_synthesis.
- ARP_Quadra timbrality "4".
- ARP_Quadra wikiPageUsesTemplate Template:Infobox_synthesizer.
- ARP_Quadra wikiPageUsesTemplate Template:Unreferenced.
- ARP_Quadra subject Category:ARP_synthesizers.
- ARP_Quadra comment "The ARP Quadra was a 61 key analog musical synthesizer produced by ARP Instruments, Inc. from 1978 to 1981. The machine combined pre-existing products: the Omni, Odyssey, a Solina-esque string unit, a phase shifter and a divide-down organ with ADSR, and a 4075 24 db low pass filter into one box. It has four sections. Bass is on the bottom two octaves, has two unison bass circuits (electric and string), with AR and a single pole low pass filter and a related AD envelope for cutoff.".
- ARP_Quadra label "ARP Quadra".
- ARP_Quadra sameAs Q3601143.
- ARP_Quadra sameAs ARP_Quadra.
- ARP_Quadra sameAs m.0f897c.
- ARP_Quadra sameAs Q3601143.
- ARP_Quadra wasDerivedFrom ARP_Quadra?oldid=682329338.
- ARP_Quadra depiction ARP_Quadra.jpg.
- ARP_Quadra isPrimaryTopicOf ARP_Quadra.