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In-depth Feature:  Future Retro 777
Albert Potts writes: .

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...continued

Oscillators
The FR-777 has two oscillators, A & B. Each oscillator has a switch allowing it to be controlled by an external control voltage (0 to +5.33 volts), or to track pitch internally based on the sequencer. Each oscillator has a frequency control with 1.66 octave range, meaning some nice fat detuned tones can be achieved or the pitches can be tuned to other instruments. The waveform knob allows the user to continuously vary the harmonic content of the oscillator from sawtooth to square wave. The level knob controls the volume of the signal sent from the oscillator to the filter.

My personal favourites in the oscillator section are the Sub B and Sub A/EX controls. These control the volume of a sub frequency one octave below that of their corresponding oscillators. The waveform of both Sub A and B is a square wave. Needless to say, using these sub frequencies can produce some mighty thick sounds! The Sub A/EX additionally controls the level of input signal from the Filter In jack, allowing the FR-777 to process an external sound source. When an external source is not plugged in, it functions as a Sub A, identical in function to Sub B.

To the lower left of the oscillator controls is a glide knob to control portamento on the note pitches. Just to the right of Sub B is a noise knob, which controls the volume of a white noise source.

Frequency Modulation
There are six controls in the frequency mod section. The Wave B knob controls the continuously variable waveform of Oscillator B (sawtooth to square) that is used to modulate Oscillator A's frequency (pitch). The Amount A knob adjusts the amount of effect Oscillator B has on Oscillator A. That's Wave B and Amount A. In turn, Wave A and Amount B do the same thing but in reverse, with Osc A affecting Osc B.

The frequency mod section is rounded out with an Envelope Decay knob to adjust the length of the decay time, and an Envelope Amount knob to control the amount of effect the envelope has on Oscillator B. Obviously, there is a lot of interaction between the various controls on the FR-777, so any fan of analog synthesis will have a good time tweaking up some unique sounds of their own.

More Resources              Articles - full listing
  • Future Retro WWW
  • 7-pole filter in action
  • Complete track with only 777 sounds
  • FR 777@synthsite
  • Lager 777 image

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       2 Comments...  
    Vidar Johansen    Said...

    OK. AWESOME! Kind of limited in one way, but if you learn to use it right it´s one of the most exciting monosynths you can come across. There are wild smoothness in the filter/modulation section and it has a few functions which I have never seen in any other analogue synth, maybe best comparable to mks-80/jupiter´s X-MOD. Its solid stuff, and you get even more surprised when you discover the "hidden" soundshaping possibilities it has. I can tell ya, I had a bass-loop going and suddenly i found the spots and got THAT INSANELY FAT groove and by twisting the cutoff knob up and down in sync with the loop, the coolest bassdrum (accent) came out of it. Lovely!

    16-Feb-08 10:28 PM


    ali    Said...

    i need lvl up 50

    03-Aug-08 02:04 PM


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