Re: [chromapolaris] Volume envelope question
2015-03-13 by w.james.meagher@...
I had this issue . . . I seem to recall it was solved with a full recalibration. Sent from my iPhone
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Volume envelope question
2015-03-13 by Dylan Wahl
Hi all, I m getting close with my Chroma Polaris restoration, but I have a question. How abrupt should the decay on the Volume Envelope be? I feel like I never
Re: [chromapolaris] Panels still available?
2015-03-02 by Chris Ryan
See Polaris Membrane Panel Replacement at the Chroma site for details
Re: Panels still available?
2015-03-02 by egasiorowski@...
Paul, Started digging into restoring 2 Chroma Polaris, and both need new membranes. Could you provide a quote for shipping Qty=2 to 1935 Mayfield Ave San Jose,
RE: [chromapolaris] Re: frozen
2015-02-23 by Paul D. DeRocco
... The main thing is that the analog inputs (e.g., pitch bend lever) have a slight lag to them at 12MHz, which pretty much goes away at 16MHz. If you make the
Re: [chromapolaris] Resonance Decode Issues
2015-02-18 by SHARIFAH ELLIOTT
Hello. I am new here. Can you help me with direction on finding a mother board for my chroma polaris? SHARIFAH THE NOBLE, THE HONORABLE On Wednesday,
RE: [chromapolaris] Weird transposing
2015-02-18 by Paul D. DeRocco
... Perhaps a bad connection to the pitch bend lever. Try the lever when this happens to see if it is dead, or if it temporarily fixes the problem. -- Ciao,
Weird transposing
2015-02-18 by venetian snares
Hi fellow Chroma Polaris users! My Chroma Polaris has been doing this weird thing where it transposes itself down 2 or 3 semitones randomly. Everything remains
Resonance Decode Issues
2015-02-18 by bob@...
Hi. I m working on a Chroma Polaris, and it seems to have a faulty resonance issue. By the time the slider is at the half way mark I m on full resonance, and I
Re: [chromapolaris] Re: frozen
2015-02-18 by Bob Grieb
I asked Paul D about upgrading the CPU speed about a year ago, when I got my Polaris. IIRC, he said that the synth may get a little more responsive with the
Re: frozen
2015-02-17 by lou@...
I have a scope and Service Manual. I ve done some work on this unit in the past. Years ago I replaced pots, fixed the damn ribbons, increased the RAM and
RE: [chromapolaris] frozen
2015-02-11 by Paul D. DeRocco
... Or, it could be a little high, causing it to remain held in the reset state. Although in my experience, the initial LED pattern tends to be more random
Re: [chromapolaris] frozen
2015-02-11 by David Clarke
... While there certainly would be many possible causes - this behaviour can also occur because of the reset level adjustment ( DC OK Threshhold ) on the
Re: [chromapolaris] frozen
2015-02-11 by Bob Grieb
Sounds like the CPU is not running. It may not be getting reset properly, or maybe is held in reset. Your code EPROM s may have lost some bits dueto
frozen
2015-02-11 by lou@...
Hi everyone, My Chroma Polaris has developed a problem. On power up it freezes. LEDs light up as though it remembers the program but there is no response to
Re: Column of membrane buttons not working
2015-02-10 by John Leimseider
I still have a couple of hundred of the new style sliders available. They are way more robust... Sent from my iPad
RE: [chromapolaris] Column of membrane buttons not working
2015-02-10 by Paul D. DeRocco
... If you have a scope, make sure you see good clean 0 to 5V signals on the control inputs to the 4051 switches. I still suspect bad sliders. When one slider
RE: [chromapolaris] Column of membrane buttons not working
2015-02-09 by rob.ocelot@...
I finally had a chance to look at this and some of the conductive trace on the membrane tail had flaked off. Very easy to do if you are repeatedly plugging
RE: [chromapolaris] Column of membrane buttons not working
2015-02-03 by Paul D. DeRocco
... The service manual is here: http://www.rhodeschroma.com/?id=polarisservicemanual The line common to those switches is the SW7 line, which is on connector
Column of membrane buttons not working
2015-02-03 by rob.ocelot@...
Hi everyone, I m currently in the process of Frankensteining a non-working Polaris with parts scavenged from another dead one in far worse shape. I also have
Re: [chromapolaris] Panels still available?
2015-02-02 by rob.ocelot@...
As far as I am aware the Chroma panels were made in the USA and most haven t had issues. Polaris panels made in the USA (which I believe were only on the
Re: [chromapolaris] Panels still available?
2015-02-01 by Bob Grieb
No, it doesn t. They do fail occasionally, but not like the Polaris.And there are no replacements available (because the demand is notenough to justify
Re: [chromapolaris] Panels still available?
2015-02-01 by Dylan Wahl
Hi Paul, Address: Dylan Constan-Wahl 1533 N Harrison Rd East Lansing MI 48823 I was wondering, does the Chroma have the same problem with membrane failure? I
Featuring the Chroma Polaris! Gospel Choirs - China Girl (Bowie/Pop)
2015-01-10 by James Meagher
Thought you might get a kick out of hearing the CP in action. I did a cover (and video) of the Bowie/Pop classic *China Girl* in honour of Bowie s Bday. It s
RE: [chromapolaris] Panels still available?
2015-01-08 by Paul D. DeRocco
... Yes, they re $200 a set plus shipping. Give me your address and I ll give you an exact shipping quote. -- Ciao, Paul D. DeRocco Paul
Panels still available?
2015-01-08 by constanw@...
Hello, I just bought a Chroma Polaris and I have a feeling I m going to be replacing the membrane panel, are these still available? Thanks! Dylan
Re: [chromapolaris] Re: Chroma Polaris for sale!
2014-11-23 by james Dugas
Hi Laura Again I Reply To Buy Yourr Pollaris Butmy Pc Is Screwed Up Jim Dugas Pgih Pa Can We Talk On Phone .14129691011 or i call u i have fifty
Re: Chroma Polaris for sale!
2014-11-23 by danfajans@...
Hi Laura, I replied to your email. Hopefully we can work something out :) Dan
Re: [chromapolaris] Re: Chroma Polaris for sale!
2014-11-22 by masonhu
I am not Dan. Does that help? Sent from my Sprint Samsung Galaxy® Note 4. ... From: Dan Stefacek fojammi@sbcglobal.net [chromapolaris]
Re: [chromapolaris] Re: Chroma Polaris for sale!
2014-11-22 by Dan Stefacek
Dan, I am still in possession of the chroma polaris and would love to send it to a new home. I am happy to arrange shipping, but I would need to know distance.
Seeking Chroma Polaris in working shape
2014-11-22 by danfajans@...
Hi all, Thanks for all of your contributions to this group over the years (especially Paul). I ve been looking through the archives and there s an incredible
Re: Chroma Polaris for sale!
2014-11-22 by danfajans@...
Hi again, The system seems to have obscured my email address: danfajans at gmail dot com
Re: Chroma Polaris for sale!
2014-11-22 by danfajans@...
Hi Laura, I realize this is many months later, but if you are still looking for a new home for Dan s Chroma Polaris I am interested. Please feel free to email
Re: [chromapolaris] Re: Problem with CEM3372 Circuit
2014-10-12 by synthparts@...
Yes I do have those. Contact me through my web page. Thanks, Doug synthparts.com
Re: [chromapolaris] Re: Problem with CEM3372 Circuit
2014-10-10 by masonhu@aol.com
oops - Sorry, gents- I m a newbie poster, and I just realized that sending my question as a reply to this thread was the wrong thing to do (vs starting a new
Re: [chromapolaris] Re: Problem with CEM3372 Circuit
2014-10-10 by Mike Williams
Hi Doug, I have the 3160B CEM3372 fitted. Do you have that rev in stock and what would be the price for that including shipping to UK post code PO31 7JL? Also,
Re: Problem with CEM3372 Circuit
2014-10-09 by synthparts@...
Hi, I have a variety of CEM3372 versions in stock. Let me know which one you need. Doug synthparts.com
Preparing Chroma Polaris for potential sale
2014-10-08 by masonhu@aol.com
Hi guys, bottom line up front: What pictures and videos are most helpful to a potential online buyer? Any ideas greatly appreciated. background I bought a
Re: [chromapolaris] Re: Problem with CEM3372 Circuit
2014-10-08 by cal lockard
Same thing happens with the Oberheim xpander. Late 3372's won't work in certain ones, (vac leakage, etc) but will in others. Early versions work fine
Re: Problem with CEM3372 Circuit
2014-10-08 by John Leimseider
The different versions of the CEM3372 have some subtle changes. On some synths, like the Prophet 600, there needed to be a resistor change so the later version
RE: [chromapolaris] Problem with CEM3372 Circuit
2014-10-07 by Paul D. DeRocco
... It s pretty easy to see if the caps are leaky, since you can remove the 3372 from its socket, leaving the caps floating. Then you can use an ohmmeter
Problem with CEM3372 Circuit
2014-10-07 by Mike Williams
First of all a hello, having recently bought my Polaris! Whilst it s in great cosmetic condition for its age, a problem with Voice 2 has just developed. As I
Re: [chromapolaris] MIDI issues
2014-10-02 by bob@...
MIDI still being weird, but we ve got around it, by disabling MIDI thru in Logic. Waiting to get my hands on a Prom Programmer in the next few weeks, and then
Resonance Issue
2014-10-02 by bob@...
Hi Small issue with the Resonance control on a Polaris I m trying to sort out. I m only getting 5 steps over the fader range. I seem to be jumping from stage 4
Re: [chromapolaris] MIDI issues
2014-09-10 by Bob Stewart
OK will see what I can get my hands on. Thanks. B On Wednesday, September 10, 2014, Paul D. DeRocco pderocco@ix.netcom.com
RE: [chromapolaris] MIDI issues
2014-09-10 by Paul D. DeRocco
... If you can get access to a UV eraser and an EPROM programmer, you can download the hex files from the rhodeschroma.com web site, and reprogram the ones
Re: [chromapolaris] MIDI issues
2014-09-10 by Bob Stewart
OK... Is that a set of chips to buy, or can the firmware be upgraded with a computer via MIDI? On Wednesday, September 10, 2014, Paul D. DeRocco
RE: [chromapolaris] MIDI issues
2014-09-10 by Paul D. DeRocco
... I have no record of what changed from version to version, but it might be worth upgrading to the latest version. It s possible that that aspect of the
Re: [chromapolaris] MIDI issues
2014-09-10 by Robert Stewart
Hi Paul Polaris is running Revision 5 software. I ll be getting it up on the bench tomorrow to go through it in more detail, so will be able to try out various
Re: [chromapolaris] Slightly OT: wtb Chroma I/O bd
2014-09-09 by David Clarke
... There will be a few Chroma owners here - but the best/first place always to go for Chroma-related topics will be the Rhodes Chroma web site