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The Roland Jupiter Series BBS
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PostPosted: Wed Apr 11, 2007 6:44 pm 
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If Synthfool is KL, then I'll obviously defer to him as he's forgotten more than I could ever learn about synths ( Kudos to you KL)
GiJIMMYD : Jup 8s changed from 12 to 14 bit models starting at serial # 171700 which was april 1982. So yours should be 14 bit. The service docs have all this info so it might help if we uploaded it and made a sticky so everyone here could have access.


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PostPosted: Wed Apr 25, 2007 3:48 am 
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I have had a couple early ones -

070412 12-bit. No DCB.
090597 12-bit upgraded to 14. OC-8 DCB kit installed.


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PostPosted: Fri Apr 27, 2007 1:23 am 
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I didn't realize there were upgrade paths. Anyone have further info such as how this was accomplished ( Eprom swap? L.E.D. replacement etc) ?
Good to see you here DougT :)


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PostPosted: Wed Nov 07, 2007 10:30 pm 
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My JP-6 (s/n 514867) was the newest I'd heard of until today...

I was just looking at a JP-6 on eBay and its serial number is 555103, the latest I have seen! It's being sold by a professional eBay reseller in Houston, Texas, USA. According to the listing, the person liquidating it was the original owner.

eBay item # 330184968714


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PostPosted: Mon Jan 14, 2008 3:49 pm 
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GiJIMMYD wrote:
It gave me 32 xx - I guess this means it's version 3.2. I'll speak to Kenton re dac version.

What were the 3.3, 3.4 revisions for? Can I get mine updated?


"If it's not broken, don't fix it"

:wink:


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PostPosted: Tue Jan 15, 2008 1:15 pm 
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Location: Perth, West Oz
With respect to upgrading, this is what the service manual says

When replacing PROM's A,B and C with different version, replace them in a set.

Version 3.2 can replace 3.1, 1.0 and 0.7
Version 3.1 can replace 1.0 and 0.7
The reverse does not hold true

ROM 3.4 can replace 3.3 and vice versa

NOTES
PROM D is required only when OC8 or DCB Board is present
PROM D must be used together with A,B,C of 3.2 version and up
PROM D contains diagnostic programs

Difference between 3.3 and 3.4 is that the latter has debugged diagnostic program

You'll likely need to make some hardware modifications in moving to a new OS as well

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PostPosted: Tue Jan 15, 2008 1:29 pm 
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Location: Perth, West Oz
BTW - my Jupiter 8 is serial number 343082. About all I know of it's history is that it was apparently once owned by the Eurogliders.

I've done the Encore upgrade and installed a fan on the heat sink. Otherwise it's in pretty good condition, except that the filters need to be retuned, one key is cracked and there are some issues with the keyscanning (but I've got the chip to fix that)

I once had another Jupiter 8 which had a very wierd MIDI interface. The interface didn't work particularly well (no MIDI buffering), but the Jupiter 8 was in extremely good condition and the mods allowed some unusual features, such as retuning the oscillators down below 1 Hz. I had to sell this one to fund the Encore upgrade. If anyone ended up with this one, I can shed a bit of light on the history of this machine, and know someone who knows the guy that built the MIDI interface.

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PostPosted: Tue Jan 22, 2008 1:52 pm 
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Hi - Mine is Serial # 192019 (thats a 14bit methinks). Software Rev 3.2

No DCB - but I suspect it had at one time since its got a gaping hole in the back covered by black gaffa tape. :evil: - otherwise works perfectly....


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PostPosted: Wed Jan 23, 2008 7:45 am 
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djm wrote:
Are you sure? Mine is 416248 which surely would mean it was the 6148th synth - from what I've read a max of 2500 were made.


Are you SURE your SN is 416248 or did you misread it?


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PostPosted: Fri Jan 25, 2008 12:36 pm 
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yes the buttons are detachable from the switches. I had all the switches replaced. Hope that helps :)


Last edited by noidear on Wed Sep 23, 2009 7:32 am, edited 1 time in total.

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PostPosted: Wed Jan 30, 2008 2:33 am 
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I cant remember exactly.

Hope you manage to get something sorted with your JP-8

:)


Last edited by noidear on Wed Sep 23, 2009 7:33 am, edited 1 time in total.

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PostPosted: Fri Feb 01, 2008 3:17 am 
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Location: Gold Coast, Australia
The Puppeteer wrote:

I once had another Jupiter 8 which had a very wierd MIDI interface. The interface didn't work particularly well (no MIDI buffering), but the Jupiter 8 was in extremely good condition and the mods allowed some unusual features, such as retuning the oscillators down below 1 Hz. I had to sell this one to fund the Encore upgrade. If anyone ended up with this one, I can shed a bit of light on the history of this machine, and know someone who knows the guy that built the MIDI interface.


Was that the Robin Whittle/Real World Interfaces version? He modded my 808 many years ago and I know he used to do Jupes.


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