RE: [chromapolaris] Chroma Polaris RAM Firmwre .
2015-12-08 by Paul D. DeRocco
... The difference is the way the velocity is applied to the volume envelope amplitude. (It s not a different velocity curve.) 9* has the pre-9 response, which
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Re: [chromapolaris] Chroma Polaris RAM Firmwre .
2015-12-06 by <sukhoy27@...>
Hi DavidHi Paul ,Yhank You for Great Advice .I ll look after for rev 11 zipped firmware and burn on 4 Eproms. Ciao On Friday, December 4, 2015 6:42 AM,
Re: [chromapolaris] Chroma Polaris RAM Firmwre .
2015-12-04 by David Clarke
... Paul - from an earlier post (in 2011) there are 9 Star versions of EPROM code also available - these are available/referenced here:
RE: [chromapolaris] Chroma Polaris RAM Firmwre .
2015-12-04 by Paul D. DeRocco
... Back on 11/22/2014, I sent Chris a later version, in zip form, which I still don t see on the site. The last version I had developed at Fender was actually
Re: [chromapolaris] Chroma Polaris RAM Firmwre .
2015-12-04 by David Clarke
... The EPROM firmware images are available free-of-charge from the Rhodes Chroma site (Polaris sub-section) here:
Chroma Polaris RAM Firmwre .
2015-12-02 by <sukhoy27@...>
Dear Paul is it possible to buy the programmed RAM with latest Chroma Polaris Firmware ? Best regards . Ciao MArio Dear Paul is it possible to buy the
RE: [chromapolaris] Polaris Frozen and no sound following membrane install [2 Attachments]
2015-11-02 by Paul D. DeRocco
... Do you have any debugging tools available? A DC voltmeter is pretty essential. A scope (even a crappy one) would be nice. The first thing I d do is
Polaris Frozen and no sound following membrane install
2015-11-02 by pushwithlegs@...
hi all, I ordered a set of replacement membrane panels from Paul as my Polaris (which I bought used as-is) had no sound and also no response from the membrane
RE: [chromapolaris] New Member Hopefully New Owner
2015-09-18 by Paul D. DeRocco
... No one knows what actually causes the failures, but I don t think it s lack of moisture. I think it s a chemical reaction between the Mylar (if it really
Re: [chromapolaris] New Member Hopefully New Owner
2015-09-18 by Bob Grieb
Paul D is the expert on this, of course. It s the tails that are used to connect to the panels that become brittle with age and crack, breaking the
Re: [chromapolaris] New Member Hopefully New Owner
2015-09-18 by masonhu@aol.com
Do panels/membranes deteriorate over time even if the unit is not being used? (or is it mainly heavy use that causes them to break down?_ i.e. If someone s
Chroma Polaris for sale
2015-09-04 by Dan Stefacek
To the Chroma Polaris Group, Dan Stefacek (Fojammi@sbcglobal) deceased three years ago. I am moving in one month from one St. Louis abode to a much smaller St.
Recall: [chromapolaris] Panels still available?
2015-08-28 by Paul D. DeRocco
Paul D. DeRocco would like to recall the message, [chromapolaris] Panels still available? .
RE: [chromapolaris] Panels still available?
2015-08-28 by Paul D. DeRocco
... I m back from vacation. The panels are $200 a set, plus shipping. Insured Priority Mail is $12.48. As soon as I receive $212.48 via PayPal, at the same
VCA Bleed
2015-08-21 by bob@...
Hi Recently getting an issue on a clients Chroma Polaris. We re getting bleed through from the VCOs (VCFs when on high Resonance) I ve gone through the
first voice of oscillator 2 out of tune
2015-08-20 by adamroese@...
Hi there, Andreas here from Germany, excuse my awful english. I have a problem with the first voice of the oscillator 2 from my fantastic chroma polaris. They
RE: [chromapolaris] Panels still available?
2015-08-13 by Astraeus000@...
Hi again Paul, Forgot to include my Paypal address for invoice: please send invoice to: astraeus000@aol.com Thanks !, Richard Willoughby for (1 Polaris panel
RE: [chromapolaris] Panels still available?
2015-08-13 by Astraeus000@...
Hi Paul, I d like to order 1 set of new Polaris panels also. They would be shipping to Kenosha, Wi 53143 and I can pay via Paypal if you send an invoice.
Polaris with new panels available in Pacific Northwest
2015-07-30 by danfajans@...
I sadly need to let go of my beautifully restored Polaris. It s got Paul s panels and had a few other minor issues addressed when they were put in (batteries
RE: [chromapolaris] Chroma Polaris - dead keys / infinite sustained notes
2015-07-13 by Paul D. DeRocco
... The keyboard switches are very susceptible to contamination, but they re also pretty easy to dismantle and clean with alcohol. Take the boards off, take
Chroma Polaris - dead keys / infinite sustained notes
2015-07-13 by virusindigo2@...
Hi, I just received a Chroma Polaris from a seller online. Cosmetically its in great condition, I have installed the factory presets and it has a new membrane
Re: [chromapolaris] Re: Polaris stubborn tuning problems
2015-07-10 by klosmon
On 7/10/2015 3:45 PM, Paul D. DeRocco pderocco@ix.netcom.com ... The S/H control parts (60, 61, 62) have already been changed, with no effect. I have 31 & 32
RE: [chromapolaris] Re: Polaris stubborn tuning problems
2015-07-10 by Paul D. DeRocco
... If the working channels end up in tune, then the timer circuitry is probably fine. ... The only thing outside the channels that isn t common to the
Re: [chromapolaris] Re: Polaris stubborn tuning problems
2015-07-10 by klosmon
Not dumb, but as I have several spare DAC chips, I tried that already. Next plan is to dig into the service manual description of the Timer Interface Serial
Re: Polaris stubborn tuning problems
2015-07-10 by John Leimseider
It may sound dumb, but I would swap the DAC... If a particular oscillator just needs one bit that isn t needed by any of the other oscillators and it s bad, by
RE: [chromapolaris] Polaris stubborn tuning problems
2015-07-10 by Paul D. DeRocco
If you have, or can borrow, a scope, it might be useful to watch the various S&H voltages during the auto-tune process, to find out at what point the autotune
Re: [chromapolaris] Polaris stubborn tuning problems
2015-07-10 by klosmon
... Yes, that was part of the all ICs on the offending voices. ... Yah, the ZCD signal looks the same for all oscillators. Tomorrow I start measuring
Re: [chromapolaris] Polaris stubborn tuning problems
2015-07-09 by Bob Grieb
Until Paul jumps in, I guess anyone can throw out ideas,so I will... The output of each synth channel goes through a 4053 MUX to createmain out and alt
Polaris stubborn tuning problems
2015-07-09 by klosmon
Currently working on a Polaris that was severely mistreated. Replaced the membrane panels, several pots; upgraded the ROMs; tuned & scaled the power supply,
Re: Tuning stability question....
2015-07-06 by John Leimseider
First thing is to swap the CEM3374 dual oscillator chip between channel 1 and another one and see if it s the CEM or not. Sent from my iPad
Re: Tuning stability question....
2015-07-06 by synthparts@...
Try swapping the CEM3374 with another voice. If you need a new one I have them in stock. Doug synthparts.com
Tuning stability question....
2015-07-04 by steve.welk@...
My recently back from the dead Polaris had been working well but seems to have developed a bit of a tuning issue. When I first turn it on cold, tune all
Re: grounding, output noise, etc...
2015-06-21 by steve.welk@...
Awww c mon guys, nobody wants to help me out here? I ve searched for some details on addressing output board noise, but other than references to an
Vintage Synth Recording Workshop in LA including Chroma Polaris
2015-06-19 by nick@...
Hi all. I am having a free pop-up synth tracking studio a Handbag Factory in Downtown Los Angeles. So if you are in LA, do not have or used to have a Chroma
Re: [chromapolaris] New Member Hopefully New Owner
2015-06-13 by Paul
Yesterday I brought home Polaris #300740 according to the unopened warranty card. It is in immaculate condition: not a mark on it anywhere and the sliders all
grounding, output noise, etc...
2015-06-04 by steve.welk@...
Ok, rather than hijack an earlier thread, thought I d start a new one. Re: my recently revived polaris, I d written... ...Anyway, only one question. When
Re: [chromapolaris] New Member Hopefully New Owner
2015-06-03 by Bob Grieb
I replaced the panel on mine, and also helped a friend do his.It s not that hard if you watch Paul s video and make sureyou follow each step. Bob
Re: [chromapolaris] New Member Hopefully New Owner
2015-06-03 by Paolo albanese
Confirmed. I bought and installed Paul panels. Very good quality and easy installation. Then, all depends if someone before tried to repair the failed contact
RE: [chromapolaris] New Member Hopefully New Owner
2015-06-03 by Paul D. DeRocco
... I ve sold a lot of sets. Only a few people have had any difficulties, and all of those problems were dealt with successfully. -- Ciao, Paul
Re: [chromapolaris] New Member Hopefully New Owner
2015-06-03 by Paul Krull
I have longingly studied the installation instructions for the replacement panels and they do seem pretty detailed and comprehensive. How many owners and
RE: [chromapolaris] New Member Hopefully New Owner
2015-06-03 by Bkuris@...
I also endorse the replacement panel. I have 2 working, 1 problem child / donor unit-- I found that upgrading the opamp on the output board really improved the
RE: [chromapolaris] New Member Hopefully New Owner
2015-06-03 by steve.welk@...
I can attest to the wonderfulness of Paul s panels, and also for his generosity in sharing his expertise. Thanks to his willingness to keep this cool
RE: [chromapolaris] New Member Hopefully New Owner
2015-05-31 by Paul D. DeRocco
... I have replacement panels. You can see the installation process here: http://www.rhodeschroma.com/?id=polarismembranepanelreplacement Contact me off-list
New Member Hopefully New Owner
2015-05-30 by paul.krull@...
Hi All: I just joined the list as I m finally about to buy a Polaris after admiring them for 30 years or so. I m a long time Chroma owner and Quadra/Odyssey/
Fw: [chromapolaris] Replacement LEDs for Polaris
2015-03-28 by Robert Barry
On Sunday, February 17, 2013 7:14 PM, stanleykenton59 wrote: Hello, I recently restored my Polaris and discovered I had some
RE: [chromapolaris] Volume envelope question
2015-03-13 by Paul D. DeRocco
... Does the DC OK signal turn off? If you have the original PS that has the DC OK adjustment, then it may simply be a matter of turning that trimmer a little.
Re: [chromapolaris] Volume envelope question
2015-03-13 by Dylan Wahl
Thanks. Actually I am having a new problem, the CPU freezes after ~8 minutes operation. Power cycling doesn t work until it cools. I checked the digital 5V
RE: [chromapolaris] Volume envelope question
2015-03-13 by Paul D. DeRocco
... James is right, calibration will fix it. Since there s a small variable offset in the zero point of the VCAs, the firmware includes a calibration
Re: calibration, midi sysex
2015-03-13 by Dylan Wahl
Hi James, thanks. Found the archived post from Paul regarding 6-5 in the service manual and resetting midi to receive sysex, and the other notes on
Loading patches from sysex?
2015-03-13 by Dylan Wahl
Ok, another quick question. I m having trouble loading patches with Midi sysex. I downloaded the Polaris patches from the website, and am sending them with