Re: [korg_mono-poly] Digest Number 436
2013-10-31 by Steve Wilson
Yes, those resistors are just additional heaters for each vco. The ssm2033 has built in heaters, but they take a while to really get up to temperature.
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RE: Korg Mono/Poly thermal grease advice (tempco)
2013-10-30 by <dir_marillion@hotmail.com>
Hi, thanks to Steve, I checked the resistor at first. It was dead. I replaced it and needed some calibration work to bring the VCO4 back to the same tuning as
Korg Mono/Poly thermal grease advice (tempco)
2013-10-27 by <dir_marillion@hotmail.com>
Hello, To a recent repair of my Mono/Poly, engineer had to remove the VCO thermal grease over the chip. Then he replaced it with another compound/paste and for
Re: [korg_mono-poly] Re: Troubleshooting Mono/Poly getting better
2013-08-25 by fire sine
Can anyone share any insight on the M/P false triggering? Thanks ________________________________ From: fire sine To:
Re: Troubleshooting Mono/Poly getting better
2013-08-25 by seekwhence
After examining KLM 398 and testing the ICs, VRs and resistors, the board seemed fully intact. I cleaned the trace side of the pcb with isopropyl placed it
Re: [korg_mono-poly] Re: Troubleshooting Mono/Poly getting better
2013-08-25 by fire sine
Ok. After stepping away for dinner and family time, I tested the power board by checking the voltages on KLM-356. I received -14.9V, +14.9V and 5V. I adjusted
Re: [korg_mono-poly] Re: Troubleshooting Mono/Poly getting better
2013-08-24 by fire sine
Steve- I see what you mean. Thank you for pointing me to the direct path ;0) I m looking over pg and feeling good about. Keith ________________________________
Re: [korg_mono-poly] Re: Troubleshooting Mono/Poly getting better
2013-08-24 by fire sine
Ok, after measuring the power supply transformer, when connecting COMmon to the center tap, I register 18VDC from my analog multimeter and 24.2 VDC from my
Re: Troubleshooting Mono/Poly getting better
2013-08-24 by willacyman
Keith - The Bando TA-006 is the power transformer, not the power supply. KLM-376-MP is the power supply board. There are five connectors at the far end,
Re: [korg_mono-poly] Re: Troubleshooting Mono/Poly getting better
2013-08-24 by fire sine
Will, Thank you for the prompt reply. I did clean the gray and black contract strips and the gold contacts on the board. The Bando TA-006 psu has 3 leads
Re: Troubleshooting Mono/Poly getting better
2013-08-24 by willacyman
Keith, before doing anything it s vital you check the voltages from the power supply and I would disconnect everything from it before measuring. High PSU
Troubleshooting Mono/Poly getting better
2013-08-24 by seekwhence
Greetings all, I received a korg mono/poly in pretty rough shape. The CV in is missing all together, leads appear to have been snipped, dust everywhere, keys
Replacing a Trim Pot on KLM-398
2013-07-21 by chipaudette
Hi All, Last week, I found that my Mono/Poly was dead. Luckily, it was just some blown fuses. After replacing those and powering it up, I found that one of
Re: [korg_mono-poly] Harrodser piano
2013-07-17 by Florian Anwander
Sorry for letting through this spammer. He is already banned, and reported to yahoo.
Re: [korg_mono-poly] Re: Noisy sounding after full capacitors replacement.
2013-07-11 by Jeppe Madsen
Hey. I m quite interrested in knowing what recapping the MP4 does to the sound. Do you have some before and after audio? Or could you describe it to me?
Re: [korg_mono-poly] Re: Noisy sounding after full capacitors replacement.
2013-07-11 by Florian Anwander
Hello ... And HOW did you resolve it finally? Did you now use different types of caps? Different values? Florian
Re: Noisy sounding after full capacitors replacement.
2013-07-11 by dir_marillion
Hi Alan, Issue solved, it was a power supply capacitors problem... even if they had been replaced with new ones. So, now the Mono/Poly works perfect, with
Re: [korg_mono-poly] Re: Noisy sounding after full capacitors replacement.
2013-06-28 by Alan Dicker
I don t think it will be a trimming problem. probably just something else that been missed like the problem with the pacman noise. a resistor or trans or
Re: Noisy sounding after full capacitors replacement.
2013-06-28 by dir_marillion
The issue solved partially. The reason of the Pacman like sound on all VCOs was a broken line on resistance circuit upon VCO4 (I am not sure what is the
Instructions for Replacing a Push-Button
2013-06-02 by chipaudette
I choose to replace another push-button on my Polysix yesterday. Since the process of replacing a button is the same for both the Mono/Poly and the Polysix, I
(no subject)
2013-05-31 by brian arthur
http://klikfoto.ru/analysiscarrotjonathantaylor/
Detuning on the Mono/Poly
2013-04-29 by chipaudette
Hi All, I recently added a Detuning function to my Korg Polysix (which lacks detuning). I modeled it after the great detuning sound from the Mono/Poly. If
Re: [korg_mono-poly] Re: Portamento Spreads the Voices
2013-04-23 by Florian Anwander
... No. That is for sure a broken cable, solder joint or a defect slide potentiometer.
Re: [korg_mono-poly] Re: Portamento Spreads the Voices
2013-04-23 by Jeppe Madsen
Soo the reason why my OSC 2 always glides max time, while the other OSC s glide according to the portamento time setting, is actually that each OSC has a
Re: Portamento Spreads the Voices
2013-04-21 by chipaudette
In trying to answer my own question regarding voice-spreading portamento on other synths, check out this link discussing the Oberheim OB-X analog polysynth:
Portamento Spreads the Voices
2013-04-15 by chipaudette
Hi All, I ve been adding portamento to my Korg Polysix and, on my first try, I found it not very exciting...nothing at all like the great portamento on the
Re: High-Frequency Content of Mono/Poly
2013-04-01 by chipaudette
Hi Florian, Here s the audio comparison that you requested. Hopefully the YouTube audio has sufficient quality for you to hear the difference in the very high
Re: [korg_mono-poly] Re: High-Frequency Content of Mono/Poly
2013-03-30 by Laszlo Kovari
Hi, It would be interesting to hunt dowm the treble loss. Is it in the VCF or the VCA? I noticed you posted the schematic of the first revision with the
Re: [korg_mono-poly] Re: High-Frequency Content of Mono/Poly
2013-03-30 by Florian Anwander
Hello Chip ... I have to try this. Looks promising. Did you do some audio examples? Florian
Re: High-Frequency Content of Mono/Poly
2013-03-30 by chipaudette
Hi All, Previously, I did some work trying exploring my perception that my Mono/Poly doesn t have quite enough sizzle for my tastes. I partially isolated
Re: Noisy sounding after full capacitors replacement.
2013-03-28 by dir_marillion
Thank you Laszlo, we will check your suggestions and will let you know. It is more likely we have a defective component which died due to capacitors
Re: [korg_mono-poly] Re: Noisy sounding after full capacitors replacement.
2013-03-28 by Laszlo Kovari
Good work, recapping and socketing always useful. Here are my thoughts: 1. Set resonance to max for self-oscillation. Now you can control the pitch with the
Re: Noisy sounding after full capacitors replacement.
2013-03-28 by dir_marillion
Hi, We have the following results: Turning on the instrument. All knobs working great. When I press any key on the keyboard, on any octave and any pitch, with
Re: Noisy sounding after full capacitors replacement.
2013-03-24 by dir_marillion
... Yes the sound is only present when a not is pressed and the sound can be filtered. Sorry the Korg is at the Technician s Lab so I am unable to record it.
Re: [korg_mono-poly] Re: Noisy sounding after full capacitors replacement.
2013-03-21 by Alan Dicker
Is the noise present only when a note is pressed and can you filter the noise? This can help locate at what point the noise is introduced. Also, you say
Re: Noisy sounding after full capacitors replacement.
2013-03-21 by dir_marillion
Hi Laszlo, Thank you for your message. I have already forwarded your steps to the Technician. He will probably check them during next week and I will let you
Re: Noisy sounding after full capacitors replacement.
2013-03-21 by dir_marillion
... Some of the capacitors here and there were almost dead so we had to be replaced them all. ... Yes, the technician replaced them one by one with the same
Re: [korg_mono-poly] Noisy sounding after full capacitors replacement.
2013-03-21 by Laszlo Kovari
1. Set osc volumes to min and check the noise issue with open filter and vca. This way you can detect whether problem relates to vcf+vca or oscillators. 2.
Re: [korg_mono-poly] Noisy sounding after full capacitors replacement.
2013-03-21 by Florian Anwander
Hello ... Is there anything you should learn from ? ;-) ... What was the bad condition ? Did you replace them with the same type? In general recapping in 30
Noisy sounding after full capacitors replacement.
2013-03-21 by dir_marillion
Hi all, After a full Capacitors replacement, on every board, including the power supply, every note in every octave sounds noisy while pressing it, ending with
no subject
2013-03-13 by Chase Smith
http://www.optiser.es/ivsfbt/cxpvuj.htm
Re: [korg_mono-poly] American Mono/Poly voltage
2013-03-07 by Ethan Turbek
Thanks a lot for the replies guys! I originally ordered a 150w converter but unfortunately it s out of stock and the order was cancelled. I will only be
Re: [korg_mono-poly] American Mono/Poly voltage
2013-02-26 by Dave Manley
Sometimes 3dB is really important :-) P.S. some of the mods suggested recently look very interesting - if only there were more hours in a day...
Re: [korg_mono-poly] American Mono/Poly voltage
2013-02-25 by Florian Anwander
Hello Ethan, I think it depends on how long you want to stay here, and how much other US-gear you want to use. If you have only the Monopoly it might be worth
Re: [korg_mono-poly] American Mono/Poly voltage
2013-02-25 by Chris Wareham
... You ll fry it if you connect it directly to European mains voltage! What you need is a step down transformer. In the UK, Maplins stock them:
Re: American Mono/Poly voltage
2013-02-25 by iscrites
You need a step-down converter that converts 230v to 110v otherwise you will fry it. They are quite cheap, you don t need more than 100w if you will solely
American Mono/Poly voltage
2013-02-25 by Ethan
Hi guys, I recently brought my American Mono/Poly to Europe. Thanks to the guys here who recommended double boxing- it seems to have made it securely! Here s
Re: [korg_mono-poly] Re: VCOs 3 and 4 out of tune
2013-02-22 by Alan Dicker
Could it be one fo the solder joints to the heat pin? I had a loose point on voicetwo the yellow wire which would loose contact and the heat compensation
Re: [korg_mono-poly] Re: VCOs 3 and 4 out of tune
2013-02-22 by Florian Anwander
Hello ... sounds like dirt in a trimmer or broken/cold solderjoint at a trimmer. Florian
Re: VCOs 3 and 4 out of tune
2013-02-22 by chipaudette
Hi Dave, I ve got a similar problem with my VCO4, but it is only out of tune by about 1/2 semitone. Being so small, I can still correct it with the tuning