Tag: alison cassidy

  • Gracie and Oberheim OB-Xa

    Gracie and Oberheim OB-Xa

    Gracie of Synthetic Dreamscapes always has some great vintage synths to show off. Today she has an Oberheim OB-Xa polyphonic analog synth. As the quality manager for Synthetic Dreamscapes, she always “stands on everything they do.”

    Submitted via our Facebook page.

  • Gracie and PPG Wave

    Gracie and PPG Wave

    Gracie shows proudly shows off a PPG Wave. Clearly putting her paw of approval as Quality Manager for Synthetic Dreamscapes.

    Submitted via our Facebook page. You can see all of Gracie’s features on CatSynth via her tag.

    With wavetable synthesis very much in vogue again, it’s a good time to look back at the PPG Wave, which was the OG for this type of synthesis using large palettes of small, carefully crafted waveforms to create rich timbres at the oscillator level, before the signal goes to any filters, amplifiers or such. Gracie is fortunate to have one of these originals to play.

  • CatSynth Pic: Gracie and Arp Odyssey

    CatSynth Pic: Gracie and Arp Odyssey

    Gracie is back! This time with a first-version Arp Odyssey (before the red Helvetica style). From Alison Synthetic Dreamscapes.

  • CatSynth Pic: Gracie and Oberheim OB-Xa

    CatSynth Pic: Gracie and Oberheim OB-Xa

    Gracie is back and performing her duties as the quality manager for Synthetic Dreamscapes.

    This Oberheim OB-Xa is not totally rebuilt yet, but our Quality Manager just had to get in on the action early!

    The OB-Xa is one of the classic Oberheim analog synths and was featured in lots of early 1980s synth-heavy pop music. For me personally, it would probably be more interesting to have the SEM filter to complement the other instruments, but it still has a sound that would be instantly familiar to fans of this era.

    The OB-Xa is a massive analog synthesizer with a very familiar and classic Oberheim sound. Its sound, size and power are very similar to the Prophet 5 from Sequential. However this one has up to 8 voices which can be split, layered and stored!

    The OB-X was very similar to the OB-Xa except that its voices could not be split or layered and, more significantly, the OB-X had a lowpass-only discrete SEM 12dB/oct state variable filter, which had a great and classic Oberheim sound. The OB-Xa changed that in an attempt to economize manufacturing and increase stability by switching to CEM3320 Curtis chips for its filters. The Xa offered two switchable filter modes: 12 dB/oct (2-pole) or 24 dB/oct (4-pole). This hardware change resulted in a more agressive sound, not quite as creamy as the OBX original, but what still became a “bread and butter” sound of the Oberheim line.

    Vintage Synth Explorer: http://www.vintagesynth.com/oberheim/obxa.php
  • CatSynth Pic: Gracie and Korg Poly 61

    CatSynth Pic: Gracie and Korg Poly 61

    Gracie is back, this time with a Korg Poly 61 synthesizer. From Alsún Ní Chasaide (Alison Cassidy) of Synthetic Dreamscapes, who repaired the instrument.

    This unusual Korg Poly-61 with factory MIDI retrofit (not Poly-61m) is finally finished and working perfectly. As usual, the last 20% takes 50% of the time!


    In this case, the non-working panel buttons were traced to severe oxidation around two connectors on the MIDI board. Both pin headers *and* connectors had to be completely replaced / rebuilt for this to be long-term reliable. Also, one new rubber key contact set was needed, and Andrej’s new CPU board from yesterday.


    And after a tune-up – perfect!! Ready to go back to its local owner 👍🏼😊

    Gracie is the Quality Engineer for these repair projects 😸🎹

  • CatSynth Pic: Gracie, Moog, LinnDrum, Arp, PPG

    CatSynth Pic: Gracie, Moog, LinnDrum, Arp, PPG

    Gracie is back, and inspecting the current crop of repaired instruments, including a Moog Subsequent 37, LinnDrum, PPG Wave, and what appears to be an Arp Odyssey (1st version). She always has quite the collection.

    From Alsún Ní Chasaide (Alison Cassidy) via Facebook.

  • CatSynth Pic: Gracie and Moog Little Phatty

    CatSynth Pic: Gracie and Moog Little Phatty

    Gracie returns, this time with a restored Moog Little Phatty. From Alsún Ní Chasaide (Alison Cassidy) via Facebook.

    The QA manager has given this her seal of approval!

  • CatSynth Pic: Gracie repairs a Roland MC-202

    CatSynth Pic: Gracie repairs a Roland MC-202

    After spending so much time around vintage synths, Gracie is ready to take on the fine art of repairing. From Alsún Ní Chasaide (Alison Cassidy) on Facebook.

    Gracie feels ready to take on this broken Roland MC-202. Good luck!!

  • CatSynth Pic: Queen of the Synth Hill

    CatSynth Pic: Queen of the Synth Hill

    Grace returns to CatSynth, this time presiding as queen atop a rather impressive collection of vintage synths. We see Moog, Oberheim, PPG, Synergy, and more!

    From our friend Alsún Ní Chasaide (Alilson Cassidy) on Facebook.

    You see Grace’s other posts here.

  • CatSynth Pic: Gracie and Vintage Synths (Oberheim, PPG, DK Synergy)

    CatSynth Pic: Gracie and Vintage Synths (Oberheim, PPG, DK Synergy)

    Gracie returns with an impressive collection of vintage synths, including multiple Oberheim modules, a PPG Wave, and a Synergy.  

    From Alsún Ní Chasaide (Alison Cassidy) on Facebook.

    How does she even get up there??

    You can see Gracie’s many appearances on CatSynth via this link.