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Yamaha DX7IID Digital Programmable Algorithm Synthesizer

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Three improved "DX7 II" models were released between 1987 and 1989, all of which featured updated internal circuitry and a restyled case. These were the DX7 IID, which improved sound quality from 12-bit to 16-bit, increased the internal patch memory and allowed bi-timbrality; the DX7 IIFD, which was identical to the DX7 IID except that it also had a floppy disk drive.

Dual and Split Mode

In Dual and Split Modes, two different voices can be played in unison or on separate parts of the keyboard and output in stereo.

Stereo Effects

The Pan parameters not only let the user determine the position of voices in the stereo field according to key touch or when part of the keyboard is played, but also create various special effects such as automatic panning between left and right channels.

Fractional Scaling

Operator output level Scaling can now be programmed individually for each group of three keys, giving the user natural keyboard control over timbre and volume.

Micro Tuning

Micro Tuning gives the user the possibility of "tempering" the instruments in any conceivable way. Preset tuning variations include Equal, Pure (C major, A minor) and Mean Tone temperaments.

Unison Key Modes

In the Unison (mono and Poly) Modes, 4 sound generation units are assigned to each key. These can be detuned to achieve a "fat" sound.

Pitch Bend

Pitch Bend can be programmed so as to affect only the lowest or highest note of a chord, or notes played but not their sustained sound. In addition, pitch bend effects can be controlled by aftertouch or breath controller.

Performance Memories

Save favorite voice combinations along with pan and various control settings in special "Performance" memory.

Glissando Pitch

With the Portamento Step parameter, Glissando Pitch stepping can be regulated from 1 semitone to 1 octave.

Storage of Voices and Performance Data Groups

Store 64 voices and 32 "Performance Data Groups" each in the internal memory and optional RAM cartridge memories for hundreds of voice combinations.

Low Frequency Oscillators (LFO)

The DX7IID has 16 Low Frequency Oscillators (LFO), one for each voice. In the multiple trigger mode, a totally independent LFO cycle can be started for each note played, making ensemble vibrato and tremolo more realistic.

Micro Tuning

Micro Tuning gives the user the possibility of "tempering" the instruments in any conceivable way. Preset tuning variations include Equal, Pure (C major, A minor) and Mean Tone temperaments.

Technical Specifications
Type: Digital
Synthesis: Frequency Modulation
Oscillators: 6
Waveforms: Sine
Envelopes: 6
Evelope Paramerters: Rate 1, Level 1, Rate 2, Level 2, Level 3, Rate 4, Level 4
LFO: 1
LFO Parameters: Sample & Hold, Saw Up, Saw Down, Square, Triangle, Delay, Key Sync
Polyphony & Tuning
Polyphony: 16
Timbrality: 2
Tuning: Micro, Standard
Patches RAM: 64
Storage: Tape, Internal, RAM Cartridge, ROM Cartridge
Editing: MIDI
Case: Keyboard
Case Details: 61 semi-weighted keys
Controls: Aftertouch, Breath, Velocity, Faders, Mod - Wheel, Pitch -Wheel, Pedal - Sustain, Pedal - Volume
Display Notes: LCD: 40 x 2, Backlit
Dimensions (WxDxH): 999(w) x 85.8(h) x 333.7(d) mm
Weight: 10.5 kg
Audio Output Connections: 1/4" Phone Jack, Stereo Main, Stereo Headphone
Audio Output Count: 4
Inputs: Breath Controller
DAC Bits: 15
DAC Frequency Rate: 44.1
Power: 120 / 220 V AC
Year Released: 1986
Manuals & Documents

Product Links
Company Product Sites:
[+] usa.yamaha.com
MSRP List Price: $2195 - convert
Retail Street Price: $2000 - convert
Used Price: $300 - $500 - convert
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