From a review in Electronic Soundmaker and Computer Music magazine:
"The CT-6000... is to be the first in a range of professional-quality, full-scale synths. It's fair to call the thing a synthesizer because the vowel-consonant method of sound generation has been dropped entirely, to be replaced with something which gives preset sounds comparable to the Roland Juno 60 or a similar budget polysynth."
Not terribly helpful in determining whether or not it's PD, but it's certainly dissimilar to the other MT/CT's; much more CZ-esque.
A while ago I posted a quick demo of my CT-6000 since I couldn't find anything else online:
https://soundcloud.com/red-noise/ct6000-sample
Drums are definitely sample-based, and clearly modeled after the TR909. Completely different than RZ1. I haven't figured out how to access the drum voices except through the built-in drum patterns... They're not accessible over MIDI, which is this model's only big shortfall imho. Otherwise, it's a really great preset keyboard.
all my best,
- Scott
---In CZsynth@yahoogroups.com, <czsynth@yahoogroups.com> wrote:
The Casio CT-6000 from 1984 was Casios first keyboard with velocity sensitive keys and midi. It also has very versatile accompaniment and can layer sounds. I always thought it was based on Consonant-Vowel-Synthesis (crossfaded stair waveforms with analogue filter, like MT-65), but some people claim it was based on phase distortion. The first official PD preset keyboard (marketet as such by Casio) was its even bigger successor CT-6500, which (how silly is this!) had no velocity sensitive keys anymore. I yet haven't bought a CT-6000 (takes much space), but it seems to be a true technical milestone.
- What are the main ICs?
If CT-6000 has sound ICs "NEC D931C", then it is definitely consonant-vowel. In oppsite to this, the phase distortion IC in my CZ-101 is "NEC D933D".
Are anywhere PCB photos online?
- Is the percussion semi-analogue or sample based?
The sound quality on YouTube wasn't high enough to identify this.
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