Re: [korgpolyex] poly 800 II fails
2011-08-07 by Gordon JC Pearce
On Sun, 7 Aug 2011 16:57:12 +0200 ... Check all the supply voltages first. Then go round the power supply alternately freezing and cooling with freezer spray
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poly 800 II fails
2011-08-07 by bruno lhuissier
Hello My korg Poly 800 II have these problems; - when i turn it on , the led turn on, but it takes 1 or 2 min that the sound comes, and the pitch is tuning.
Re: Tapping into the Key On state.
2011-08-05 by zoinky420
... ahh, right, I guess if I was more of a musician I would ve immediately realized that notes often overlap or are stacked for chords...
Re: Poly-800 short-circuit damage diagnosis.
2011-08-05 by 7yash
Don t do that Bill, Keep the email into the inbox, but then when you get a message from Yahoo Groups, go down to the message and click Reply by web post . It
Re: [korgpolyex] Re: Poly-800 short-circuit damage diagnosis.
2011-08-05 by billmeirelles@uol.com.br
Exactly, that s what I do, if HTML is too much of a problem I ll configure my account to stop sending the messages to my e-mail but unfortunately I ll have to
Re: [korgpolyex] Re: Poly-800 short-circuit damage diagnosis.
2011-08-05 by billmeirelles@uol.com.br
Sorry if my e-mails are in HTML and you don t like it, I can t see the point, anyways I m just replying the e-mails I received in my mail box, I m not sure if
Hmmm... Filter poles?
2011-08-05 by 7yash
NJM2069 P 15 - P 18. Don t they give access to the individual filter poles? If so...a multi-mode filter mod is possible!
Re: Poly-800 short-circuit damage diagnosis.
2011-08-04 by 7yash
On second thought, Y Groups also allow replying from your mail client, so that s where the issue is I believe.
Re: Poly-800 short-circuit damage diagnosis.
2011-08-04 by 7yash
Odd fr those settings, but I do know Yahoo Groups have updated their settings. If nothing works try a leave group/join group and see the settings then. ...
Re: [korgpolyex] Re: Poly-800 short-circuit damage diagnosis.
2011-08-04 by ASSI
... As a matter of fact, I already did that years ago. Bill s mails are the only ones I get as HTML and he did send two or three inbetween as plain text, so I
Re: Tapping into the Key On state.
2011-08-04 by 7yash
Many thanks for that, Mike, I think I ve got the components. Hey, why aren t you reading my posts carefully, you re missing out! :P Expand the thread, there
Re: Poly-800 short-circuit damage diagnosis.
2011-08-04 by 7yash
Hi Achim, have you checked your Yahoo Group registration settings for this group? YOu should be able to change it to plain text. Also, I was reading some of
Re: [korgpolyex] Re: Tapping into the Key On state.
2011-08-04 by Michael Hawkins
Forgot to mention that the steering diode has to have its cathode (-) connected to the signal while the anode (+) is connected to ground. That s so that the
Re: Tapping into the Key On state.
2011-08-04 by korgpolyex800
I think you could do this with: 1 x 100pf ceramic cap 1 x 100K 1/4W resistor 1 x 1N914 1 x 74HC14 Take the signal from IC7 pin 1 and pass it through the 100pf
Re: [korgpolyex] Re: Poly-800 short-circuit damage diagnosis.
2011-08-04 by ASSI
... Bill, could you please send plain text instead of HTML mails to this list? Regards, Achim. -- +
Re: Tapping into the Key On state.
2011-08-04 by 7yash
Would I also need an analogue switch here?
Re: Tapping into the Key On state.
2011-08-04 by 7yash
Haha! It so happens I do have a Schmitt Trigger handy.
Re: [korgpolyex] Re: Tapping into the Key On state.
2011-08-04 by Michael Hawkins
IC8 signal is not buffered. So it would be better to take Pin 1 of IC7 - which is the buffered signal. You should probably use your own op amp buffer too which
Re: [korgpolyex] Re: Tapping into the Key On state.
2011-08-04 by Michael Hawkins
Hmmm, I think I went off a little half set up on this. The EG3 signal is software inserted into VCF cutoff. So you would have to accept setting EG3_INT to
Re: [korgpolyex] Re: Tapping into the Key On state.
2011-08-04 by Michael Hawkins
Touche ! Yes, I mean schmitt trigger. Thanks for the correction so I will continue to put up with your modification ramblings! Mike
New file uploaded to korgpolyex
2011-08-04 by korgpolyex@yahoogroups.com
Hello, This email message is a notification to let you know that a file has been uploaded to the Files area of the korgpolyex group. File : /1)
Re: Tapping into the Key On state.
2011-08-04 by 7yash
IC 8 - P 1?
Re: Tapping into the Key On state.
2011-08-04 by 7yash
Mike, on which IC and pin can I get the EG3 output?
Re: [korgpolyex] Re: VCF Drift Problem
2011-08-04 by billmeirelles@uol.com.br
Not yet, but I ll try this one too... Em 03/08/2011 20:33, 7yash escreveu: Have you checked/disabled the FM-800 to see if that gave
Re: Tapping into the Key On state.
2011-08-03 by 7yash
Mike, you meant a Schmitt Trigger rather than a Shottky diode?
Re: Poly-800 short-circuit damage diagnosis.
2011-08-03 by 7yash
Nice, not too bad then. Mine is fixed!
Re: VCF Drift Problem
2011-08-03 by 7yash
Have you checked/disabled the FM-800 to see if that gave anything?
Re: [korgpolyex] Re: Poly-800 short-circuit damage diagnosis.
2011-08-03 by billmeirelles@uol.com.br
Yep, mine seems to be just the CUTOFF pot of the moog slayer mod that got dirty, I m cleaning it with isopropyl right now... Em 03/08/2011 20:08, 7yash
Re: Poly-800 short-circuit damage diagnosis.
2011-08-03 by 7yash
Found it! It seems something is loose around the FM-800 pot, that s all, so the NJM2609 is fine and dandy. Bill, I certainly would have checked that same
Re: Poly-800 short-circuit damage diagnosis.
2011-08-03 by 7yash
Great, this gives me a starting point to work from! Thanks. Hope I didn t fry the NJM2069 inputs - that would be a shame. On the other hand, I have an SSM2044
Re: Poly-800 short-circuit damage diagnosis.
2011-08-03 by 7yash
Oh yes, the joystick could be malfunctioning and not zeroing correctly. However, this does not explain the keys issue. Still, I ll check it. Thanks, Bill. Will
Re: [korgpolyex] Re: Poly-800 short-circuit damage diagnosis.
2011-08-03 by billmeirelles@uol.com.br
Oh, it could be just the Joystick too... Em 03/08/2011 18:43, 7yash escreveu: That s what I thought too. Except: how do I know what
Re: [korgpolyex] Re: Poly-800 short-circuit damage diagnosis.
2011-08-03 by billmeirelles@uol.com.br
Take the pin for VCF CV INPUT in the NJM and follow the tracks backwards. Set EG3 and LFO to VCF int to 0. Now send a sustained midi note from a sequencer and
Re: Poly-800 short-circuit damage diagnosis.
2011-08-03 by 7yash
That s what I thought too. Except: how do I know what voltages I should look for?
Re: Tapping into the Key On state.
2011-08-03 by 7yash
Hi Mike, thanks for that, maybe this works too. Since my own Poly-800 is mostly malfunctioning right now, would you want to try the mod yourself? If so, here
Re: [korgpolyex] Re: Poly-800 short-circuit damage diagnosis.
2011-08-03 by billmeirelles@uol.com.br
I see, ol, sorry I have no clue... The best choice is to test the parts one by one following the tracks, same thing I ll have to do to find where s the extra
Re: [korgpolyex] Re: Tapping into the Key On state.
2011-08-03 by Michael Hawkins
ANother way would be to intercept the EG3 envelope output. And you could use a simple schottky (74C14) to provide the high low signal. Two diodes to protect
Re: Poly-800 short-circuit damage diagnosis.
2011-08-03 by 7yash
No it doesn t sound intermittent like that: on min Cutoff, there s a type of LFO to it. Also, some keys sound faint at some points.
Re: [korgpolyex] Poly-800 short-circuit damage diagnosis.
2011-08-03 by billmeirelles@uol.com.br
Does it sound like the mp3 I posted? The one called VCF_DRIFT_PROBLEM.mp3 Em 03/08/2011 17:03, 7yash escreveu: Ow, I noticed
Poly-800 short-circuit damage diagnosis.
2011-08-03 by 7yash
Ow, I noticed something wrong with the sounds of the Poly-800 yesterday and thought I could fix it with a transfer of the sounds from the computer again, but
Re: Tapping into the Key On state.
2011-08-03 by 7yash
Hey Zoinky, From what I gather, if you are playing several notes with a long release, then the noise gate would be on once and stay on thill the last note s
Re: Tapping into the Key On state.
2011-08-03 by zoinky420
... How is that not exactly what Mike s description of the noise gate would do?
Re: Tapping into the Key On state.
2011-08-03 by 7yash
Hi Mike, Not sure the noise gate can play the part here as the mod needs to be On briefly at every note ON event. Maybe some timer/trigger circuit should do
Re: [korgpolyex] Tapping into the Key On state.
2011-08-03 by Michael Hawkins
The only signal that is available on the Poly is the noise gate. You could tap into the noise gate signal. This signal comes on as soon as any note is held and
Re: Tapping into the Key On state.
2011-08-02 by 7yash
Hi Bill, I still need to work some more on my Silent Way setup: I made a small mistake on my cable, but I m sure I d get it to work. However, for this mod, I m
Re: [korgpolyex] Tapping into the Key On state.
2011-08-02 by billmeirelles@uol.com.br
Try to use the keyboard midi out with NI Reaktor or maybe Logic Environment, then use Silent Way to send the signal back as a CV. Now the easier way just use
Tapping into the Key On state.
2011-08-02 by 7yash
I would need to tap into the Korg s Key ON state and have a circuit to do this: Send an ON signal on every Key ON, maintain that state for a very short time
Re: External Audio in Mod.
2011-07-29 by 7yash
I just finalized some mods myself, including the two Audio Ins and I m using the oscillators from my Kurzweil K2500 (which can be samples or DSP-based) and the
Re: [korgpolyex] Re: External Audio in Mod.
2011-07-29 by Epiik Soul
Your idea for using the DW8000 tone generator would be awesome. I used to have a DW6000 and an 8000 and loved them both. On Jul 21, 2011, at 9:34 AM, Michael
Re: [korgpolyex] DCO2 detune
2011-07-29 by Epiik Soul
Hi all. If the signal were analog, you could use a lag processor to slow down the signal to DCO2. Is there a digital equivalent? On Jul 21, 2011, at 9:17 PM,