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macumbista
Joined: Sep 12, 2007 Posts: 398 Location: berlin
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Posted: Fri Mar 22, 2013 2:14 am Post subject:
Source for CA3046 / CA3280 ??? |
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Especially the CA3280...
Futurelec, Banzai and Small Bear are out of both.
Bridechamber has CA3046 but not CA3280.
Might need to buy extras as I have heard that there are lots of bad OTAs out there that show up after a "burn in" time. Or maybe someone has 1 x CA3046 and 2 x CA3280 they have tested and are willing to sell?
Thanks!!!
Derek _________________ Esoteric drones and nonlinear distortion
Custom/handmade experimental instruments
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analog_backlash
Joined: Sep 04, 2012 Posts: 393 Location: Aldershot, UK
Audio files: 21
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Posted: Fri Mar 22, 2013 2:31 am Post subject:
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Hi Derek,
I know a (quite expensive) UK source for both ICs:
http://www.cricklewoodelectronics.com/Cricklewood/home.php
They want £2.50 for the CA3046 and £9.00 for the CA3280. I can't vouch for these ICs, but I have bought other "hard to find" ICs from them and they've been fine. They appear to be in stock, but it might be worth e-mailing them first to double check.
Gary |
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macumbista
Joined: Sep 12, 2007 Posts: 398 Location: berlin
Audio files: 3
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Posted: Fri Mar 22, 2013 2:44 am Post subject:
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Hi Gary, and thanks!
Those prices seem close to these guys:
http://www.dalbani.co.uk/
Might get the 3046 from Bridechamber along with some other rare things and bite the bullet on the 3280s.
Best!
D. _________________ Esoteric drones and nonlinear distortion
Custom/handmade experimental instruments
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isak
Joined: Dec 13, 2009 Posts: 847 Location: Israel
Audio files: 18
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Posted: Fri Mar 22, 2013 6:23 am Post subject:
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Maybe you can check with Geatano, he'se a member here.
He is very reliable guy. _________________ http://www.myspace.com/mgmtrance |
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Osal
Joined: Aug 16, 2011 Posts: 147 Location: Here
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LeftyLogic
Joined: Feb 09, 2013 Posts: 9 Location: Paola, KS
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isak
Joined: Dec 13, 2009 Posts: 847 Location: Israel
Audio files: 18
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Posted: Fri Mar 22, 2013 9:18 am Post subject:
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I ordered from tayda the 3046, they are good.
Test them with the ody vco and bergfotron wave shapers.
the same results as my RCA ones _________________ http://www.myspace.com/mgmtrance |
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elmegil
Joined: Mar 20, 2012 Posts: 2177 Location: Chicago
Audio files: 16
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Posted: Fri Mar 22, 2013 9:34 am Post subject:
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I have bought many things from tayda and not had a problem yet, though I don't believe I've ordered this particular chip. |
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analog_backlash
Joined: Sep 04, 2012 Posts: 393 Location: Aldershot, UK
Audio files: 21
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Posted: Fri Mar 22, 2013 4:59 pm Post subject:
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I've also ordered from Tayda (once). The only problem that I've had was a couple of suspect LEDs (but I may have just fried them by accident). Mind you, for the prices they charge for LEDs, it doesn't really bother me if one or two don't work!
Gary |
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sonicwarrior
Joined: Dec 22, 2005 Posts: 266 Location: Cologne, Germany
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Posted: Sat Mar 30, 2013 4:28 am Post subject:
Re: Source for CA3046 / CA3280 ??? |
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macumbista wrote: | Might need to buy extras as I have heard that there are lots of bad OTAs out there that show up after a "burn in" time. |
I could offer 2 CA3280 but never heard of the 'burn in' time issue. I have a finished MOTM-190 in which I can test them but how much 'burn in' time is needed then? |
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macumbista
Joined: Sep 12, 2007 Posts: 398 Location: berlin
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Posted: Sat Mar 30, 2013 4:42 am Post subject:
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Thanks! I think I have the 3280s covered now. If not, I'll let you know.
Some people have reported failure on these chips after a certain number of hours (eight maybe?). I think it depended very much on the source. Can't find the thread at the moment, maybe Search or Google is your friend here... _________________ Esoteric drones and nonlinear distortion
Custom/handmade experimental instruments
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sonicwarrior
Joined: Dec 22, 2005 Posts: 266 Location: Cologne, Germany
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Posted: Sat Mar 30, 2013 6:09 am Post subject:
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macumbista wrote: | maybe Search or Google is your friend here... |
Well, if you want people to test you have to provide this information. |
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macumbista
Joined: Sep 12, 2007 Posts: 398 Location: berlin
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Posted: Sat Mar 30, 2013 6:13 am Post subject:
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sonicwarrior wrote: | macumbista wrote: | maybe Search or Google is your friend here... |
Well, if you want people to test you have to provide this information. |
My solution was just to find extras. Honestly I think this figure can vary a lot. Use is the only test. Best!!!!! D. _________________ Esoteric drones and nonlinear distortion
Custom/handmade experimental instruments
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pirx
Joined: Mar 26, 2010 Posts: 1 Location: Boston, MA
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