Re: OT: Akai arpeggiator
2010-12-29 by zoinky420
... there are already suffient software arps, and I think a couple of them are free. It might be better to build a hardware arp from scratch than try to add a
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Re: OT: Akai arpeggiator
2010-12-29 by zoinky420
... Yeah and we can get more powerful software synths than the Hawk, too, but people still buy it don t they... ... Then why are there always scads of bids on
Re: [korgpolyex] Re: OT: Akai arpeggiator
2010-12-28 by Michael Hawkins
Don t get me wrong, I am quite interested in bringing out Arpeggiator. I just think we need to be realistic when talking about the market. I intend to start
Re: OT: Akai arpeggiator
2010-12-28 by k9k9dog
i agree..better to devise some software for an arduino MIDI self build thing. the akai arp IS not the ultimate arp, and yes, the oberheim thing crashed, which
Re: [korgpolyex] Re: korg poly 800 power problem
2010-12-28 by Gordon JC Pearce
... No idea, I can t see that on the diagram. Have you got the board plugged into the rest of the synth? Gordon MM0YEQ
Anyone know a electronics tech in France or nearby?
2010-12-28 by Michael Hawkins
I have a customer that needs help to build and install their HAWK kits into his EX-800. Do any of you have a good contact for an electronics technician in
Re: [korgpolyex] Re: OT: Akai arpeggiator
2010-12-28 by Michael Hawkins
How about I just design/build/manufacture a new 1RU arpeggiator? Oh hang on, I can do a gazillion things arp-wise on a PC with any number of different
Re: korg poly 800 power problem
2010-12-28 by n8
I m not sure what you mean by pin 6 . 3.7V across Q1 emitter/collector On CN6A, isn t pin 6 supposed to be measured to have V 5V? I thought that was the
Re: [korgpolyex] Re: korg poly 800 power problem
2010-12-28 by Gordon JC Pearce
... That should *not* overheat when driving the Poly 800, unless there s some horrible fault. ... 9*sqrt(2) = 12.7V - you re reading peak not RMS voltage ;-)
Re: korg poly 800 power problem
2010-12-28 by n8
Hi Don! I am gonna swap out Q1 and will remeasure everything to see what is happening... You mentioned pulling stuff and swapping for a 7805?! How is that
Re: korg poly 800 power problem
2010-12-28 by n8
That is correct. 13V even when plugged into the keyboard and switched on... It does seem to drop to 9V even when everything is connected like in normal
Re: korg poly 800 power problem
2010-12-28 by n8
I agree Don. The power supply should be fine...thoguh something was up with the other adapter I used (one of those 7, 9 ,12 volt swtichable) with he polarity
Re: korg poly 800 power problem
2010-12-28 by n8
Hi Mike, Even the Korg Poly 800 OEM adapter gives out 12 volts... Looking at the adapter, its shows it as 9V neg center 700mA 15W @ input. But when I measure
RE: [korgpolyex] Re: korg poly 800 power problem
2010-12-27 by backshall1 (dsl)
Okay, time to dive into this overly-complicated 5V regulator circuit. Yes, it s a very good candidate for just unsoldering most of it and replacing it with a
HAWK-800EX kit... help needed
2010-12-27 by Bapt
Hi Michael, I have an EX800 synth, a couple of years ago I bought the HAWK-800EX kit (on your site) but I never found the time to mount the kit, and I m afraid
RE: [korgpolyex] Re: korg poly 800 power problem
2010-12-27 by backshall1 (dsl)
Yes, it should be lower than that if the 5V regulator section was working, so that s a pretty good indication that no power is getting through at least one of
RE: [korgpolyex] Re: korg poly 800 power problem
2010-12-27 by backshall1 (dsl)
I think what Mike means here is that if you had batteries installed, and wired the A/C adapter directly to the same circuit, the higher voltage would feed back
Re: [korgpolyex] Re: korg poly 800 power problem
2010-12-27 by Michael Hawkins
the original email said that the voltage was still 13 volts while plugged in to the Poly. ________________________________ From: backshall1 (dsl)
Re: OT: Akai arpeggiator
2010-12-27 by zoinky420
... Well I know a lot of people have checked the service manual for an easy hack, and there isn t any. It would have to be a major firmware rewrite project
Re: korg poly 800 power problem
2010-12-27 by zoinky420
... And what do you mean by endorse ? It wasn t a Hawk question, so perhaps a better word to use would have been recommend .
Re: korg poly 800 power problem
2010-12-27 by zoinky420
... Well a wall-wart is a more stable power source than batteries. What do you mean by incorrectly ?
RE: [korgpolyex] Re: korg poly 800 power problem
2010-12-27 by backshall1 (dsl)
A newer switching supply wall wart will give you a consistent 9vdc regardless of current flow, but an older one with a big transformer will be 12-13 volts when
Re: korg poly 800 power problem
2010-12-27 by korgpolyex800
The wall wart should be providing a consistent 9V DC output. If you re seeing 13 volts at the input of the Poly 800 then you need to get a 9V DC wall wart. 13
Re: [korgpolyex] Re: korg poly 800 power problem
2010-12-27 by Michael Hawkins
To be frank, wiring a jack to the battery terminals if done incorrectly could cause a battery explosion or fire. So I cannot endorse that method of repair.
Re: korg poly 800 power problem
2010-12-27 by zoinky420
You know you could just wire the jack, or a new jack to the battery terminals.
Re: Hot Q18
2010-12-26 by tim.tashpulatov
What voltage does your power supply deliver? Could it be like with 7805 regulators, when the bigger the difference between input voltage and output voltage,
Re:Replacement transistors for Q1 and Q3
2010-12-25 by n8
What about something from radio shack? Like the 7805? Sorry if this is a silly question...just curious. I cant get +5V on ping 6 like i need. seems like my
Re: Hot Q18
2010-12-25 by n8
I would say not... Even the voltage regulator transistor Q1 doesn t have a heat sink on it, and it looks like its collector is tied directly to the NEG rail on
New file uploaded to korgpolyex
2010-12-24 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 : /4)
korg poly 800 power problem
2010-12-23 by n8
hi list. just joined and have a question perhaps someone can chime in on... i have a korg poly 800 mkI here on the bench with a power issue. when on batteries
Re: [korgpolyex] Re: HAWK-800 Sysex Patch Dump format
2010-12-10 by joe peak
Now, what is your specific question regarding sysex? Yes I was wondering that too.........I thought it all seemed to be some hot air floating around to get
Re: [korgpolyex] Re: HAWK-800 Sysex Patch Dump format
2010-12-10 by Michael Hawkins
From page 35 of the Owners Manual... MIDI CC “Hardware Controller Friendly” Method The third method is a non standard method for changing HAWK-800
Re: HAWK-800 Sysex Patch Dump format
2010-12-10 by k9k9dog
hey guys, well thanks tim, for showing us the tx thing, new to me. the thing i found about the ex800, is that you d tend not to fiddle with patches while you
Re: [korgpolyex] Re: HAWK-800 Sysex Patch Dump format
2010-12-09 by joe peak
Ya know.......You ve given me an idea......Like those old roland synths where they have a breakout box full of knobs and such. One could make a midi box
Re: [korgpolyex] Re: HAWK-800 Sysex Patch Dump format
2010-12-09 by Michael Hawkins
you all need to seriously consider JsynthLib. I have the basic patch librarian part of it working. I just haven t finished the editor. If anyone is really
Re: HAWK-800 Sysex Patch Dump format
2010-12-09 by tim.tashpulatov
I agree, I would too prefer some on-screen controls with knobs and buttons running on PC. My setup is under Linux, and so far I haven t found any tools there
Re: HAWK-800 Sysex Patch Dump format
2010-12-08 by k9k9dog
hi tim: i read that article, and see what it does, but would find editing tx/dx like that really frustrating (although you d have to have a go with it before
Re: HAWK-800 Sysex Patch Dump format
2010-12-07 by k9k9dog
*if i may say* (...) seems really xxxx heavyweight, lol! for an issue that could be resolved more simply using sysex. i used to get some quite complex sysex
Re: HAWK-800 Sysex Patch Dump format
2010-12-07 by tim.tashpulatov
According to MIDI implementation, seems like it is possible to change one parameter at a time using CC84 and CC85. So I dug out my old proto board with Atmel
Re: HAWK-800 Sysex Patch Dump format
2010-12-04 by k9k9dog
ugh, sorry, hadn t read previous post..nice long list :) i wrote a load of cubase mixermaps years ago, so it s familiar territory. just need the data format;
Re: HAWK-800 Sysex Patch Dump format
2010-12-04 by k9k9dog
if you upload a link to the new sysex data format and midi implementation chart, i could knock up a vst editor in synthedit. i just need to suss out how to
Re: [korgpolyex] Re: HAWK-800 Sysex Patch Dump format
2010-12-04 by Michael Hawkins
Well, some of my fellow HAWK fans have created templates for the various sequencer, arranger and controller software packages that are out there. So I was
Re: HAWK-800 Sysex Patch Dump format
2010-12-04 by zoinky420
... How does one make a template?
Re: HAWK-800 Sysex Patch Dump format
2010-12-01 by tim.tashpulatov
Mike, Yes please, I d love to take a look at JSynthLib. The last one I have checked in the Files section of the group missed actual parameter editing stuff.
Re: [korgpolyex] HAWK-800 Sysex Patch Dump format
2010-11-30 by Michael Hawkins
Well, here is the raw format of the data. See the MIDI implementation for the precise format of the sysex message. In order, from patch byte 0 through to patch
Re: [korgpolyex] HAWK-800 Sysex Patch Dump format
2010-11-30 by Michael Hawkins
Tim, You might be interested in looking at the JsynthLib editor/librarian that I have been working on. If you re interested I can post it. Meanwhile, I ll get
HAWK-800 Sysex Patch Dump format
2010-11-30 by tim.tashpulatov
Mike, Could you please shed some light on Hawk-800 s patch dump format? I am thinking of some external way to tweak patch parameters and to send changes back
Re: [korgpolyex] P1 14 parameter values 12 and 13
2010-11-24 by Michael Hawkins
Tim, 12 and 13 correspond to EG3 and inverted EG3. It s not documented because I haven t finished the code yet although they both work. You will notice that
OT: Akai arpeggiator
2010-11-23 by Gordon JC Pearce
Here s someone selling the service manual: http://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&&item=360298820082 Maybe that s got some clues to how it can be
P1 14 parameter values 12 and 13
2010-11-22 by tim.tashpulatov
Hello all, Now that I ve assembled and installed the HAWK-800 kit, I am learing my renewed Poly-800. When playing with P1 14 parameter (DCO harmonics