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Broadwave
Joined: Feb 16, 2007
Posts: 347
Location: Manchester UK
Audio files: 6
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 Posted: Wed Apr 10, 2013 10:02 am Post subject:
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I had a bunch of them made by Futurlec - Very good quality, reasonably priced, but delivery takes forever 
If I need to build anything that needs a quality PCB, I have to plan months in advance 
I'm currently working on upgrading my Odyssey (extra VCO & LFO, Aftertouch and 40235 Dual Filter) so I'll be busy for a while, but I'll keep popping in to see how things are cooking.
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Kronos 2-88, Kronos 61, Studiologic Sledge V2/SL, Broadwave ARP 2600EX, Broadwave 18U ARP based Eurorack Modular, Broadwave Minimoog Clone, GEM S2 Turbo.
Synth DIY Projects
Musical Doodlings |
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furio
Joined: Dec 25, 2009
Posts: 125
Location: Austria
Audio files: 1
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steffensen
Joined: Jul 11, 2012
Posts: 103
Location: Sweden
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| Posted: Wed Apr 10, 2013 11:48 am Post subject:
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| AndyR1960 wrote: | I had a bunch of them made by Futurlec - Very good quality, reasonably priced, but delivery takes forever
If I need to build anything that needs a quality PCB, I have to plan months in advance
I'm currently working on upgrading my Odyssey (extra VCO & LFO, Aftertouch and 40235 Dual Filter) so I'll be busy for a while, but I'll keep popping in to see how things are cooking. |
Oh, Futurlec, thats awesome man. Any chance you could share the file needed for a order from them? Or if we could arrange something? I really want more of these VCO's.  |
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steffensen
Joined: Jul 11, 2012
Posts: 103
Location: Sweden
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| Posted: Wed Apr 10, 2013 11:50 am Post subject:
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| furio wrote: | Hi guys! 
I offer the acrylic engraved panels for 6 EUR each and an aluminum engraved panel for 23 EUR. |
How does the aluminium engraved ones look? Is it the black ones on Page 2 of this thread? Wasnt sure if they were alu or acrylic. |
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furio
Joined: Dec 25, 2009
Posts: 125
Location: Austria
Audio files: 1
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| Posted: Wed Apr 10, 2013 12:14 pm Post subject:
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| steffensen wrote: | | furio wrote: | Hi guys!
I offer the acrylic engraved panels for 6 EUR each and an aluminum engraved panel for 23 EUR. |
How does the aluminium engraved ones look? Is it the black ones on Page 2 of this thread? Wasnt sure if they were alu or acrylic. |
It was just to show that you can use 9 and 16 mm pots ...We do those black in Acrylic. The aluminium black ones has not yet arrived! |
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steffensen
Joined: Jul 11, 2012
Posts: 103
Location: Sweden
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| Posted: Wed Apr 10, 2013 12:16 pm Post subject:
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| furio wrote: | | steffensen wrote: | | furio wrote: | Hi guys!
I offer the acrylic engraved panels for 6 EUR each and an aluminum engraved panel for 23 EUR. |
How does the aluminium engraved ones look? Is it the black ones on Page 2 of this thread? Wasnt sure if they were alu or acrylic. |
It was just to show that you can use 9 and 16 mm pots ...We do those black in Acrylic. The aluminium black ones has not yet arrived! |
Cool, looking forward seeing them.
Any sketch to share until then? Curious on the design. |
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furio
Joined: Dec 25, 2009
Posts: 125
Location: Austria
Audio files: 1
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steffensen
Joined: Jul 11, 2012
Posts: 103
Location: Sweden
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| Posted: Wed Apr 10, 2013 12:40 pm Post subject:
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Nice one.
Not sure about the font for the main label, its pretty hard to see. Looks like its a tight build there, but it is doable. I really need a couple more of these puppies.. |
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noiselector
Joined: Mar 30, 2013
Posts: 21
Location: France
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| Posted: Wed Apr 10, 2013 12:47 pm Post subject:
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| Furio, I want 5 black acrylic panels. |
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furio
Joined: Dec 25, 2009
Posts: 125
Location: Austria
Audio files: 1
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paulstone
Joined: Apr 14, 2013
Posts: 23
Location: ITA
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| Posted: Mon Apr 15, 2013 3:25 pm Post subject:
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Hello guys this is my first post here
interested for 4 pcb and alum. panels if are disponible thx |
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blue hell
Site Admin
Joined: Apr 03, 2004
Posts: 24670
Location: The Netherlands, Enschede
Audio files: 330
G2 patch files: 320
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| Posted: Mon Apr 15, 2013 3:44 pm Post subject:
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 paulstone & thanks!
_________________
Jan
also .. could someone please turn down the thermostat a bit.
9 3 4 .. erm .. not 13 then? .. hmm, ah eight! .. yeah yeah as in 8647 .. 47 is an 88 .. pwew .. numbles!
Last edited by blue hell on Tue Apr 16, 2013 9:33 am; edited 1 time in total |
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steffensen
Joined: Jul 11, 2012
Posts: 103
Location: Sweden
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| Posted: Tue Apr 16, 2013 2:10 am Post subject:
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| furio wrote: | | the aluminum panels are here !! |
Looking good man.
How much for these?
Is it a tight squeeze to fit it all in 8HP? Build pic? |
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noiselector
Joined: Mar 30, 2013
Posts: 21
Location: France
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| Posted: Tue Apr 16, 2013 2:52 am Post subject:
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| Yes, PCBs are available.Nice looking Furio!! |
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paulstone
Joined: Apr 14, 2013
Posts: 23
Location: ITA
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| Posted: Tue Apr 16, 2013 3:13 am Post subject:
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| Blue Hell wrote: | | paulstone - could you please freeze your avatar? |
hi blue thx for the welcome , yep i will change
ciao
P. |
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steffensen
Joined: Jul 11, 2012
Posts: 103
Location: Sweden
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| Posted: Mon Apr 22, 2013 7:03 am Post subject:
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| steffensen wrote: | | furio wrote: | | the aluminum panels are here !! |
Looking good man.
How much for these?
Is it a tight squeeze to fit it all in 8HP? Build pic? |
? |
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furio
Joined: Dec 25, 2009
Posts: 125
Location: Austria
Audio files: 1
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| Posted: Mon Apr 22, 2013 7:49 am Post subject:
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I am so sorry everyone for my delay in answering questions... I have been working for a whole week on testing and checking my PCB... discovering that the CD4011 by NXP did not function with this PCB. The problem has been solved after I bought a ST.
The panel has enough space to mount the alpha 9 or 16 mm pots.
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steffensen
Joined: Jul 11, 2012
Posts: 103
Location: Sweden
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| Posted: Mon Apr 29, 2013 2:23 am Post subject:
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Sorry for the delay in reply here too.
Nice looking builds! I thought you had the Ringmod in there as well, hence why i figured it was a tight build. Plenty of room here, great.
Just figured acrylic panels perhaps wouldnt be a bad idea. To avoid the locking between the VCO's especially.
Or - have you guys solved this in any other way?
It gets a bit disturbing at times when you DONT want sync to happen.
| furio wrote: | I am so sorry everyone for my delay in answering questions... I have been working for a whole week on testing and checking my PCB... discovering that the CD4011 by NXP did not function with this PCB. The problem has been solved after I bought a ST.
The panel has enough space to mount the alpha 9 or 16 mm pots. |
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noiselector
Joined: Mar 30, 2013
Posts: 21
Location: France
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| Posted: Mon Apr 29, 2013 10:29 am Post subject:
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Thanks for the info about the CD4011 issue.
I am testing a separate board for waveshaper, ringmod and subosc.
I will share the layout when the testing will be finished.
I have built only one VCO and the only issue I noticed is when I put it in my grounded rack the VCO is detuned. |
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furio
Joined: Dec 25, 2009
Posts: 125
Location: Austria
Audio files: 1
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| Posted: Thu May 02, 2013 1:18 pm Post subject:
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Hello to all,
The BC847BPN improve the sound.
...32bit/96kHz (fm@saw & pwm@pw) test:
http://modular-synth.org/OLDfiles/OddyOSCprova.wav
Please note: in the PDF file I have marked the BC847BPN upside down. |
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steffensen
Joined: Jul 11, 2012
Posts: 103
Location: Sweden
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| Posted: Thu May 02, 2013 2:27 pm Post subject:
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I breadboarded the VCO some months ago, and tried a bunch of transistors. I fond that the 2N alternatives delivered the american raw ARP sound, while the BC ones made it more in to the realms of round Roland.
So, i wouldnt say it improves the sound, rather gives it a different tone. |
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furio
Joined: Dec 25, 2009
Posts: 125
Location: Austria
Audio files: 1
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| Posted: Thu May 02, 2013 11:37 pm Post subject:
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| steffensen wrote: |
I breadboarded the VCO some months ago, and tried a bunch of transistors. I fond that the 2N alternatives delivered the american raw ARP sound, while the BC ones made it more in to the realms of round Roland.
So, i wouldnt say it improves the sound, rather gives it a different tone. |
Hi steffensen,
I've noticed a marked improvement of the operation, rather than a difference in tone = the instrument results is more convincing to me.
In theory, the transistors 2N3904 and 2N3906 should be tended to more audiophile sound... I guess it's just a matter of thermal coupling and perhaps a work of this kind one might approach a similar result (photo).
I tried to make two adapter's with the recommended transistors & better tempcos = after comparing, the VCO with 2N3904/2N3906 expo converter seems to malfunction.
For years I used the dual version PCB by Andy and it was my favorite module... perhaps I would install two BC847BPN's also on them.
The tone changes a lot more by replacing the 2N5910 with a 2N3906... however, for a while I try the VCO with the 2N3906 instead the 2N5910, but I have no intention to replace the 2N5459's.
It disturbs me a lot more to run a celluar phone in standby mode in the studio for the damages arising in tone and operation, than the BC847BPN.
In any case, I like the Andy's idea to separate the dual VCO in individual modules. The single VCO improves drastically in sound and operation.
P.S. unfortunately I just destroyed my natural ADC and I have to fix it... I recorded with an ADC with integrated Pre-amplifier on which they are installed an array of AD8620's, these inject too much violence and obscure the detail. |
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steffensen
Joined: Jul 11, 2012
Posts: 103
Location: Sweden
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| Posted: Fri May 03, 2013 1:25 am Post subject:
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| furio wrote: |
Hi steffensen,
I've noticed a marked improvement of the operation, rather than a difference in tone = the instrument results is more convincing to me.
In theory, the transistors 2N3904 and 2N3906 should be tended to more audiophile sound... I guess it's just a matter of thermal coupling and perhaps a work of this kind one might approach a similar result (photo).
I tried to make two adapter's with the recommended transistors & better tempcos = after comparing, the VCO with 2N3904/2N3906 expo converter seems to malfunction.
For years I used the dual version PCB by Andy and it was my favorite module... perhaps I would install two BC847BPN's also on them.
The tone changes a lot more by replacing the 2N5910 with a 2N3906... however, for a while I try the VCO with the 2N3906 instead the 2N5910, but I have no intention to replace the 2N5459's.
It disturbs me a lot more to run a celluar phone in standby mode in the studio for the damages arising in tone and operation, than the BC847BPN.
In any case, I like the Andy's idea to separate the dual VCO in individual modules. The single VCO improves drastically in sound and operation.
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Interesting.
I didnt do anything particular to my 2N3904/2N3906 expo converter, it just works great. I use a 1.87 tempco, which might have something to do with that tho.
What do you mean by operation? Is FM behaving better? Or something else?
I havent found a 2N5910 yet, but i think i have some on the way now (just hope they arent fakes).
I did however (for the 2N5910) try comparing the 2N3906 with the later used by ARP: 2N4125.
Made no difference in sound at all, but perhaps the latter one dont get heated as much. I didnt measure.
Using BF245 instead of the 2N5459 however made a difference for sure. (more in to the Roland realm i described above)
As said, mine is working great BUT the locking/syncing of the VCO's is disturbing. Its one thing if i have chose to use Sync, but if i havent i dont want it to happen. And there is no way to stop the Ground joining up thru the panel obviously.
This should be a problem with the original Odyssey as well imo, wonder how they solved that.. if this is the answer to stop the locking.
I cant be the only one experiencing this and wanting to find a solution? |
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furio
Joined: Dec 25, 2009
Posts: 125
Location: Austria
Audio files: 1
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| Posted: Fri May 03, 2013 2:06 am Post subject:
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| I too believed for three years that my dual VCO was great... Though now it just works better... by giving a close ear I would say that the auto-sync could still be improved (I do not know how I should proceed to investigate technically and/or whether I have the suitable lab equipment... I only have a pocket oscilloscope with which I can almost see nothing). |
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noiselector
Joined: Mar 30, 2013
Posts: 21
Location: France
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| Posted: Fri May 03, 2013 8:59 am Post subject:
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I think you could use Nomex paper for insulating the panel from the ground board trace as an easy solution ( or you can use Furio's acrylic panels).
Thanks a lot for sharing all your experiments with this VCO board, this threat is getting hot.
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