Hello, I found my cp4 generate some high freq artefact while playing rhodes. I can fix it by setting keyoff sound to -16, but why I have to do it?!

Just like the real thing... I'm sorry if you don't like the artifact you are speaking of, but that is an essential part of the sound of the Rhodes instrument being modeled. "Key Off Volume" is controlling the noise caused as a result of the (real) Rhodes having all those magnetic microphone elements in the harp section.

"Why do you have to do it?" you ask.. the answer is because you don't like it. We think it is imperative to give musicians choices. Those who remember the Rhodes and like what you are referring to as an artifact can increase it or decrease it, to taste. If we set the preset value at (your preference) -16 no one would know that the instrument is capable of this important (well not so important to you) but important nonetheless, part of the Rhodes sound.

I would like to use keyoff effect without artefacts.

I'm not sure I understand what you mean by this - what "keyoff effect" do you wish to use??? Perhaps we are talking about two different things... The KeyOff Volume sound is very much on purpose... and very accurate to the microphonics that would occur in the real instrument.

Is there a way to make an update to resolve this problem??

It is not a problem, it is a feature. And an extremely programmable feature. You can add more or you can take it away. It is programmable.

Hope that helps.

You mean this high freq metalic sounds are normal?? Key off sound is generate when key are released but after that I can hear from some key, not from all of 88 keys some strange sound. Is it really normall? I have real fender piano in my music school, nord stage 2 with probably the best sampled rhodes and both of them don't create that ugly metalic sound. Some guy on this forum create video about that, please look at this one more time:

https://drive.google.com/folderview?id=0B5eBdiISIpzXfmdlMmgzZ2NuY0ZiWDFkSU9pN2pNN3loanptRFBJTnROMUtfNDZVdWxOdm8&usp=sharing

Please open this link and look at the video. I will hear what I mean :))

CP4 Stage: Quick Tip

You call that high frequency?

Anyway, as a Rhodes owner since 1978, I can tell you that this is how a Rhodes sounds when you let up a key. (If you let a key up abruptly, the key bounces, and you hear this sound 2 or 3 times! Ugh! I'm tempted to add the "backcheck mod" to my Rhodes to stop that.)

If I get really bored, I'll video playing my 1977 Mark I Stage 73, and you'll see what makes that noise.

I sampled my own Rhodes and love my sample set, but I didn't sample the key release. IMHO, that's a sound that the Rhodes designers would have omitted if they could have, without compromising something else. I'm not a big fan. Yet I find I play the CP4 Rhodes without adjusting that, so evidently it's not loud enough to bother me during actual playing, and it certainly adds realism.

I tried all the strike positions and I like the default the best.

Hello,
I think I have the same 'issue' with several artifacts when playing rhodes sounds. With the 01:71 rd1 default sound, a kind of disturbing metallic resonance is present in keys D4 and F4 sharp. I don't know if this is the same that Adam's, but I can't check because the file he shared is not available. In my case this effect does not disappear with any Keyoffvol value. I don't think it can because the disturbing noise appears before releasing the keys. The strike position does not eliminate the effect neither. Do other cp4 users have the same effect and found some way of fixing it ? Can it be related to the speakers used? The effect is difficult to hear with headphones, but I tried with different amplifiers having the same bad result.
Thanks

I hear that overtone on D4 as well. But I think it sounds pretty dang authentic. I don't think I'd turn up the key off velocity because then it would be even more pronounced. If you were overdubbing a Rhodes part in a recording studio, it may be a problem. I'd probably turn that parameter all the way down and it still would not be "clean" enough. But in a live band I think it would just add to the overall sound. I suppose it depends on what you are looking for. I like a little clank and rattle when I play Rhodes. The real ones had a lot of moving parts in there.

You might try and adjust the cutoff and reso parameters. It's under "Edit", "Part", "Filter/EG".