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CS-60 Sustain issue

 

Hi,


I'm not certain that the sustain functions are working correctly on my CS-60. It seems as if the notes in Sustain I are being cut off when they are not supposed to be.


Here is one environment where I can hear something odd:


1) I close down the low pass filter and set a long release on the panel (2-3 seconds at least)


2) I then play a chord and then hit a short note on the lowest C (picked only because it will make the oddity more noticeable).?


3) I would expect that hitting this lowest C would NOT kill the chord as it is is releasing, since in Sustain I all releases are independent. BUT it DOES kill off the entire chord.


4) Next issue is that if I quickly hit a middle C key while listening to the final moments of the release from the low C (which killed off the other chord), this causes the first hit low C note to suddenly get louder AND the chord that was previously cut off returns (provided the release is still within its originally set time frame/trajectory), and it even sounds like its filter is opening again.


Is this weird behavior, or is this how Sustain I should work?


I should note that the ribbon is currently removed for repair, in case that somehow affects release times (not sure why it would though).


Thanks?DT
 

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Hi DT.

I think I know the effect you are talking about and it’s normal - if not what you’d want. ?The problem is that that there are 3 DACs that each output the voltages corresponding to the notes played. ?The main one is on the KAS board and each of the 8 voltages go through sample/hold circuits on the KAS and S/H boards. ?This is where the Sustain I/II logic comes in and freezes (or not) and note voltages. ? However, the KBC boards also have DACs which are used for the Keyboard Control Brilliance/Level High/Low. ? These don’t have the sample/hold circuits or “know” about the Sustain mode. So, you play a high note with a long sustain in Sustain I (or is it II - I forget) and then hit a low key. ?The high note is still sounding but its filter/volume could suddenly change if the Keyboard Control knobs aren’t at their center positions since the keyboard scanner will tell the DACs that all 8 notes are that low note.

Hope that makes some sense.

?David

On Aug 10, 2016, at 4:14 AM, sneakyflute@... [yamahacs80] <yamahacs80@...> wrote:

Hi,

I'm not certain that the sustain functions are working correctly on my CS-60. It seems as if the notes in Sustain I are being cut off when they are not supposed to be.

Here is one environment where I can hear something odd:

1) I close down the low pass filter and set a long release on the panel (2-3 seconds at least)

2) I then play a chord and then hit a short note on the lowest C (picked only because it will make the oddity more noticeable).?

3) I would expect that hitting this lowest C would NOT kill the chord as it is is releasing, since in Sustain I all releases are independent. BUT it DOES kill off the entire chord.

4) Next issue is that if I quickly hit a middle C key while listening to the final moments of the release from the low C (which killed off the other chord), this causes the first hit low C note to suddenly get louder AND the chord that was previously cut off returns (provided the release is still within its originally set time frame/trajectory), and it even sounds like its filter is opening again.

Is this weird behavior, or is this how Sustain I should work?

I should note that the ribbon is currently removed for repair, in case that somehow affects release times (not sure why it would though).

Thanks?DT
 

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you are experiencing some of the features of the cs60s 80s... in sus 1 the releasing portions are controllable by the scaling.... if you have the Low portion of the keyboard with less vca and a brighter filter, those attributes will be added to the releasing stage....? things not able to be modulated upon release in sus 1 are pitch (ribbon)...? if you play a chord in the middle and let it release and play the high zone with a VCA boost and a VCF cut, that will affect the middle hanging notes the same way....

I use my CS80 like this rhythmically to create a manual type of sequence playing... playing rythmically in and out of lower and upper regions

---- On Wed, 10 Aug 2016 06:14:11 -0500 sneakyflute@... [yamahacs80] wrote ----

?

Hi,


I'm not certain that the sustain functions are working correctly on my CS-60. It seems as if the notes in Sustain I are being cut off when they are not supposed to be.


Here is one environment where I can hear something odd:


1) I close down the low pass filter and set a long release on the panel (2-3 seconds at least)


2) I then play a chord and then hit a short note on the lowest C (picked only because it will make the oddity more noticeable).?


3) I would expect that hitting this lowest C would NOT kill the chord as it is is releasing, since in Sustain I all releases are independent. BUT it DOES kill off the entire chord.


4) Next issue is that if I quickly hit a middle C key while listening to the final moments of the release from the low C (which killed off the other chord), this causes the first hit low C note to suddenly get louder AND the chord that was previously cut off returns (provided the release is still within its originally set time frame/trajectory), and it even sounds like its filter is opening again.


Is this weird behavior, or is this how Sustain I should work?


I should note that the ribbon is currently removed for repair, in case that somehow affects release times (not sure why it would though).


Thanks?DT
 

Hi,

Thank you both for your detailed answers. The brilliance controls do affect how much of what I called an “oddity” is present (in the center position, it seems to go away), so both of your descriptions make perfect sense with what I am hearing. Great to know that nothing is wrong with my CS.

best,

DT

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