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LektroiD
Joined: Aug 23, 2008
Posts: 1019
Location: Scottish Borders
Audio files: 2
G2 patch files: 2
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 Posted: Mon Jun 15, 2009 3:21 pm Post subject:
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| fonik wrote: | today i put trimmers to a blank x-panner board. took me just a view minutes (no unsoldering necessary).
i shot a view pictures and will amend the documentation this week to make it more clear. but since the pictures are already taken i thought i could post them anyways...
BTW go to the flickR set and you will see the description for each picture.
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That's very clear. Good job I never started assembling my second board yet.
I have a question though. I have a big pile of 10KΩ multiturn trimmers. Is it possible to use these instead of the 50KΩ by increasing the value of the fixed resistors to say, 82KΩ. Would that work?
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fonik
Joined: Jun 07, 2006
Posts: 3950
Location: Germany
Audio files: 23
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| Posted: Mon Jun 22, 2009 5:57 am Post subject:
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| LektroiD wrote: | | I have a question though. I have a big pile of 10KΩ multiturn trimmers. Is it possible to use these instead of the 50KΩ by increasing the value of the fixed resistors to say, 82KΩ. Would that work? |
ooops, missed that one! sorry.
i would just try the 10k. however, i did not try it. maybe i will be able to test it in a spice model this week!? i don't want to commit myself to that, though.
anyway, i finaly amended the documentation. below you will find a link to the new complete documentation (4MB) and a 2nd link to the trimmer mod documentation only:
http://www.modular.fonik.de/pdf/PS3100_DT_v3.pdf
http://www.modular.fonik.de/pdf/x-pan_trimmer_mod.pdf
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matthias
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delayed
Joined: Jun 24, 2008
Posts: 130
Location: TN
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| Posted: Mon Jun 22, 2009 9:00 am Post subject:
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| is the only change to the docs the trimmer mod? |
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robotfunk
Joined: Jun 22, 2009
Posts: 20
Location: Netherlands
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| Posted: Mon Jun 22, 2009 11:17 am Post subject:
which caps to use? |
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Hi, I got these boards through a friend, and I must say they look great!
Being a bit of a noob, I am wondering what kind of capacitators to use, since there are so many types available. I have a bunch of bog-standard ceramics and electrolytes, are these OK to use? My friend tells me its important to get the best possible, which did you use? I see on the PCB only a few caps have a + marking, and the rest don't. Does that mean the ones w/o marking are without polarity, and I need to use the ceramics for them?
thanks in advance,
Jilt van Moorst |
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fonik
Joined: Jun 07, 2006
Posts: 3950
Location: Germany
Audio files: 23
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| Posted: Mon Jun 22, 2009 11:57 am Post subject:
Re: which caps to use? |
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| robotfunk wrote: | Hi, I got these boards through a friend, and I must say they look great!
Being a bit of a noob, I am wondering what kind of capacitators to use, since there are so many types available. I have a bunch of bog-standard ceramics and electrolytes, are these OK to use? My friend tells me its important to get the best possible, which did you use? |
different types of capacitors may influence the sound of a module. i never took care about that much. who says what sounds good and what not? noise be another issue, i did not care about that much, too. timing capacitors for LFOs, VCOs or S/H are another story.
however, i use mainly polyester film for almost all purposes. for bypass i use ceramic multilayer or monolithic, what i have on hand.
there are people with much more experience and knowledge here, who might chime in!?
anyways, here is an article by h. bissell about capacitors:
http://www.modular.fonik.de/files/capacitors_101.pdf
| Quote: | | I see on the PCB only a few caps have a + marking, and the rest don't. Does that mean the ones w/o marking are without polarity, and I need to use the ceramics for them? |
yes.
happy building and let us know about your progress.
BTW there is quite a lot valuable info at ray wilsons site www.musicfromouterspace.com with general guidelines about troubleshooting, some very nice tools, explanations ans so on...[/url]
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cheers,
matthias
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Funky40
Joined: Sep 24, 2005
Posts: 875
Location: Swiss
Audio files: 1
G2 patch files: 5
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| Posted: Mon Jun 22, 2009 1:01 pm Post subject:
Re: which caps to use? |
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| robotfunk wrote: | I see on the PCB only a few caps have a + marking, and the rest don't. Does that mean the ones w/o marking are without polarity, and I need to use the ceramics for them?
thanks in advance,
Jilt van Moorst |
where you have the +marking you _must_ take polarized electrolytics, yes. And watch polarisation 
The others are unpolarized. common is to use polyesterfilm ( MKS2 )
depending on the function you can take whatever you have or should take a certain type.
when nothing is stated MKS2 is allways a good choice. ( the 2 stands for the spacing = 5mm ) |
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robotfunk
Joined: Jun 22, 2009
Posts: 20
Location: Netherlands
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| Posted: Tue Jun 23, 2009 2:59 pm Post subject:
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thanks guys
I decided I'll just wing it for now with what I have, can always upgrade later if I don't like the sound, just too eager to get this working  (yes I'll mind the polarity of the other caps)
On the resonators board I've got all the resistors in place except the 200k one which isn't in any of my 'standard packages' and all non-polarized caps plus all the IC feet, so I feel I'm halfway, waiting on the vactrols and other parts to finish this one, with my new temp controlled soldering station it goes much faster than before!
Re vactrols, with all this talk about matching vactrol pairs it seems crazy not to go with a dual vactrol, since they are only one dollar/euro more than the single ones, am I right in assuming/hoping they would be somehow matched to each other?
I'll let you know my progress |
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TekniK
Joined: Aug 10, 2008
Posts: 1059
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| Posted: Fri Jul 10, 2009 12:54 pm Post subject:
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Panels
Last edited by TekniK on Thu Aug 19, 2010 3:54 am; edited 1 time in total |
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ericcoleridge
Joined: Jan 16, 2007
Posts: 889
Location: NYC
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| Posted: Fri Jul 10, 2009 2:13 pm Post subject:
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| TekniK wrote: | | Zabalagamanajabagaza? |
Wow, these are really impressive panels. How do you get the white print onto black panel? Must be screen print, no? |
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fonik
Joined: Jun 07, 2006
Posts: 3950
Location: Germany
Audio files: 23
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| Posted: Fri Jul 10, 2009 2:24 pm Post subject:
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realy impressive! amazing. great design. i am speechless for the moment.
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matthias
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TekniK
Joined: Aug 10, 2008
Posts: 1059
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| Posted: Fri Jul 10, 2009 2:40 pm Post subject:
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| ericcoleridge wrote: | | TekniK wrote: | | Zabalagamanajabagaza? |
Wow, these are really impressive panels. How do you get the white print onto black panel? Must be screen print, no? |
its laser engraving on black anodized aluminium |
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diablojoy
Joined: Sep 07, 2008
Posts: 809
Location: melbourne australia
Audio files: 11
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| Posted: Fri Jul 10, 2009 7:10 pm Post subject:
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| if any xpan boards are still remaining will take 2 please |
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kitsch-bent
Joined: Aug 03, 2008
Posts: 15
Location: USA
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| Posted: Tue Jul 14, 2009 12:14 am Post subject:
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I'm really really interested in 4 X-Panner boards....
so, if they are available, count me in |
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TekniK
Joined: Aug 10, 2008
Posts: 1059
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| Posted: Wed Aug 05, 2009 2:20 pm Post subject:
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panafonik idea:
Last edited by TekniK on Thu Aug 19, 2010 3:54 am; edited 1 time in total |
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Junk Rhythm
Joined: Jan 07, 2008
Posts: 81
Location: San Francisco, CA
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adambee7
Joined: Apr 04, 2009
Posts: 420
Location: united kingdom
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| Posted: Wed Aug 19, 2009 4:34 am Post subject:
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hi matthias.
On the resonator boards. On C18,19,20 can polystyrene be used as i've noticed different spacings on the board?? I was thinking that these were the main filter caps??  |
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fonik
Joined: Jun 07, 2006
Posts: 3950
Location: Germany
Audio files: 23
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| Posted: Wed Aug 19, 2009 4:50 am Post subject:
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| adambee7 wrote: | hi matthias.
On the resonator boards. On C18,19,20 can polystyrene be used as i've noticed different spacings on the board?? I was thinking that these were the main filter caps?? |
true. for one board i used silver mica, rated for 500V. they needed the large spacing and wider holes...
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matthias
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adambee7
Joined: Apr 04, 2009
Posts: 420
Location: united kingdom
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| Posted: Wed Aug 19, 2009 5:36 am Post subject:
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| nice one. Micas i've used for other filters i've built. Thanks man. |
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de_engineered
Joined: Jul 16, 2009
Posts: 18
Location: USA
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| Posted: Fri Sep 11, 2009 12:27 pm Post subject:
2 Questions |
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Quick transistor question: can the BC550s and BC560s be swapped with 2N3904s and 2N3906s? They're just acting as expo converters, right?
Secondly, I got thinking that while these filters are called "Resonators," where's the resonance control?
I'm still waiting one some parts to arrive to finish my pair of Resonators, otherwise I'd have tried myself already: could one add resonance loops to the filter channels? I don't know if the filter topology permits this or not. Something like an electrolytic cap and resistor (maybe a VC element later if this works), tapped from R6, 7, or 8, back to J5 audio in?
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de_sign : de_stroy : de_engineered |
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TekniK
Joined: Aug 10, 2008
Posts: 1059
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| Posted: Fri Sep 11, 2009 1:53 pm Post subject:
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| One of my 5 fonik resonators |
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fonik
Joined: Jun 07, 2006
Posts: 3950
Location: Germany
Audio files: 23
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| Posted: Sat Sep 12, 2009 2:12 pm Post subject:
Re: 2 Questions |
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| de_engineered wrote: | | can the BC550s and BC560s be swapped with 2N3904s and 2N3906s? |
yes. take care of the pinout.
| Quote: | | Secondly, I got thinking that while these filters are called "Resonators," where's the resonance control? |
i thought it is called resonator because it can be used to emphasize certain frequencies in order to simulate the resonances of accoustic instruments, stringed instruments in this case. but that's jsut what i thought. maybe i am wrong.
| Quote: | | I'm still waiting one some parts to arrive to finish my pair of Resonators, otherwise I'd have tried myself already: could one add resonance loops to the filter channels? I don't know if the filter topology permits this or not. Something like an electrolytic cap and resistor (maybe a VC element later if this works), tapped from R6, 7, or 8, back to J5 audio in? |
why not. just try and tell us your findings. would be a great mod.
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matthias
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LektroiD
Joined: Aug 23, 2008
Posts: 1019
Location: Scottish Borders
Audio files: 2
G2 patch files: 2
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| Posted: Sun Sep 13, 2009 1:44 am Post subject:
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I'm having a hard time getting hold of the vactrols for this in the UK (VTL5C3/2). I can get them at RS components, but they're US stock and the postage becomes outrageous. If anyone knows of a UK stockist of these, please let me know. Even an EU stockist would be a consideration.
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LektroiD |
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gwaidan
Joined: Mar 07, 2009
Posts: 53
Location: Sydney, Australia
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| Posted: Sun Sep 13, 2009 1:58 am Post subject:
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| Might be worth getting it from Smallbear or Bridechamber in the US...their postage aint too bad! |
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fonik
Joined: Jun 07, 2006
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adambee7
Joined: Apr 04, 2009
Posts: 420
Location: united kingdom
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| Posted: Sun Sep 13, 2009 5:45 am Post subject:
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| LektroiD wrote: | | I'm having a hard time getting hold of the vactrols for this in the UK (VTL5C3/2). I can get them at RS components, but they're US stock and the postage becomes outrageous. If anyone knows of a UK stockist of these, please let me know. Even an EU stockist would be a consideration. |
Banzai in Germany have them i think. I got my singles from there. I have not got mine yet but i'm sure banzai sell them. |
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