Sequential Tom Oberheim Dave Smith OB6 variable state SEM filter.❤ (Hydrasynth EP)

video upload by Dave Bellamy

"I just adore the Sequential Tom Oberheim Dave Smith OB6 variable state SEM filter.❤ (Hydrasynth EP)"

OB-6 VCO analog synthesizer front panel controls + arp jam

Published on Nov 13, 2019 Dave Bellamy

"Direct recording from OB-6 arpeggiator jam Seot 2019."

Film score type music - Simple theme. Prophet6 analog synthesizer played from tape.

Published on Nov 20, 2018 Dave Bellamy

"Film score music - Prophet-6 analog synthesizer played from tape. Lots of resonance!
Just a jam from this afternoon caught on cheap old cassette tape.
Video file: PB200214"

Sequential Prophet-6 Demos by Dave Bellamy

Published on Oct 23, 2018 Dave Bellamy

Playlist:
1. Sequential Prophet6 jam P6 up and (too) close #1: filter resonance whistly

Live Prophet-6 jam 23 Oct 2018.
Lots of whistle on filter resonance from 2:35. Apreggiated notes - just playing the controls. Digital effects off at 5:17. Some quantization as I moved the filter cutoff knob at 5:44. Inverted filter envelope to filter at 0:54.
Anyone who doesn't like bad camerawork better not watch this. However, I wanted to get the idea of the thrill of playing an ultra real time controllable synthesizer like the Prophet-6 so oftentimes I wanted both hands to play the controls.

2. Sequential Prophet6 jam P6 up and (too) close #2 filter resonance vs clean

Sequential Prophet6 jam P6 up and (too) close filter resonance vs clean (no resonance). Resonance turned from around 8 to 0 after 2:17. Apreggiated sequence to maximize fun of playing the controls on this wonderful analog synth keyboard.

3. Sequential Prophet6 jam P6 up and (too) close #3: PWM pulse width modulation.

Sequential Prophet6 jam P6 up and (too) close PWM pulse width modulation with and without filter mod.
Anyone who doesn't like bad camerawork better not watch this. However, I wanted to get the idea of the thrill of playing an ultra real time controllable synthesizer like the Prophet-6 so oftentimes I wanted both hands to play the controls.

Prophet VS Demos & a Look Inside by Dave Bellamy

Published on Oct 18, 2018 Dave Bellamy

Playlist:

1. Prophet VS arpeggiator and lead sound (bight and LOUD).

The pretty unique Prophet VS when it was working.
It had a nice arpeggiator with Assign mode which I find ten times more useful than the standard uop and down modes.
Here is a little string type lead sound on top of the arpeggiator: the same sound as the arpeggio but brighter because the notes are more sustained. This synth could be searing, bright and loud and at other times really quite subdued. The waveform was a strings waveform on all 4 oscillators if I recall correctly.
It' is (was, becaus it's now broken) a bitimbral synth but this is in 8 voice monotimbral mode with notes overlaying the arpeggio.

2. Sequential Prophet VS Curtis filters resonance demo after raspy strings sound.

Sequential really, rather than Sequential Circuits, Prophet VS. Raspy string sound and then crazy filter resonant bubbles sound. Curtis analog filters, digital oscillators playing single cycle sample waves, so this was a hybrid synthesizer in the true sense. Definitely showing the harsher element of the VS sound!

3. Sequential Prophet VS - first look inside this Analog/Digital hybrid vector synthesizer.
Sequential Prophet VS - first look inside this Analog/Digital hybrid vector synthesizer, after most of the dust was cleaned out!
Video file: PA180371.
Similar to the other videos - but this one shows a possible crack developing in the left hand circuit board near the data slider.
4. Sequential Prophet VS electronics: Curtis CEM chipset 3360, 3365, 3379, 5510 & 5530.

Quick tour of the Curtis chip set on the circuit boards of a Sequential Prophet VS synthesizer. Chips shown: CEM 3360 (VCA), 3365 (DAC, x2), 3379 (VCF, x8), and sample and hold ships CEM 5510 (x4) and 5530 (x2).
Synth needs repair, otherwise pretty decent condition (no data slider knob); it worked for 18 years for me.
This is after most of the dust was cleaned out! I couldn't even read the numbers on the chips when I first opened it this morning.
Video file: PA180381

5. Sequential Prophet VS interior electronics inc. VCFs and VCA - synth currently needs repair.

Quick tour of the interior and circuit boards of a Sequential Prophet VS synthesizer, showing various parts including most of the Curtis chip set used in this synth. Synth needs repair, otherwise pretty decent condition (no data slider knob); it worked for 18 years for me.
At around 1:00, I mentioned the 4 CEM 5510 S&H chips; actually that's the right number of those! There are no nice arty designs or illustrations on these boards like there were on the Prophet-10 for instance (see DSI studio and office tour with Carson here on YT).
This is after most of the dust was carefully cleaned out of this synth! I couldn't even read the numbers on the chips when I first opened it this morning.
Video file: PA180375

DSI Sequential Prophet-6 VCO analog synthesizer demo sweet tone. Wonderful filter IMHO.

Published on Jun 14, 2018 Dave Bellamy

"Jamming on my Sequential Prophet-6. I love the tone of this thing when it is on song. The P6 has a really sweet tone once you get away from the presets on board. Once you explore the sound you discover the truly gorgeous filter with all its nuances. This P6 does have slightly wobbly tuning sometimes though - but that's analog for you - sometimes it is just wobbly enough! I'm using the arpeggiator again. Recorded straight live directly to cassette tape (very old fashioned I know). It's easy to play for an hour and wonder where the time went.

I think this synth would have fitted very well with the unique sounds on Genesis Duke and that era of Genesis in 1979 to 1980.

Video file P5240127."