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Uncle Krunkus
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Joined: Jul 11, 2005 Posts: 4761 Location: Sydney, Australia
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Posted: Thu Apr 06, 2006 3:02 am Post subject:
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The Soundlab doesn't use pin 2(15) (the linearisation diodes bias is connected here) so I don't think it matters. _________________ What makes a space ours, is what we put there, and what we do there. |
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dnny
Joined: Mar 12, 2005 Posts: 519 Location: Helsinki, Finland
Audio files: 8
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Posted: Thu Apr 06, 2006 8:38 am Post subject:
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there are differences between LM131700 and LM13600
Scott Stites wrote: | The LM13700 has the Darlington buffer unbiased, where in the LM13600,
the darlington is biased by the Iabc current.
The gain cell between the two is identical. Therefore, if you are not using the buffers, there would be no discernible difference between the two.
There are a few cases where one device may work fine, but the other not so fine. One case I recall is the original MS-20 filter (the later version that used the LM13600 OTA instead of the custom Korg IC) - JH noted on the Synth DIY list that replacing the LM13600 with an LM13700 did not work out too well - there was more thumping with the LM13700.
But, as mentioned before, if you're not using the Darlington buffer, there's nothing to worry about, and I imagine in most applications, even when using the buffer, one probably wouldn't notice much difference, except, perhaps in some cases, on fast transients.
Cheers,
Scott |
anyone got SL running on LM13600 ? _________________ Association of experimental electronics
www.koelse.org
flickr: cable porn group Last edited by dnny on Thu Apr 06, 2006 10:39 am; edited 1 time in total |
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dnny
Joined: Mar 12, 2005 Posts: 519 Location: Helsinki, Finland
Audio files: 8
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Posted: Thu Apr 06, 2006 8:46 am Post subject:
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Mikmo wrote: | Just a little warning.
You can't always substitute 13600 for 13700. 13700 have linearisation diodes, 13600 does not.
If Rays design uses these diodes you can NOT use the 13600 in stead of the 13700.
I do not know if this is the case though. |
if you look at the Datasheet of LM13600
it says :
i would say it has linearisation diodes.
or is there something that i don´t understand ? _________________ Association of experimental electronics
www.koelse.org
flickr: cable porn group |
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Scott Stites
Janitor
Joined: Dec 23, 2005 Posts: 4127 Location: Mount Hope, KS USA
Audio files: 96
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Posted: Thu Apr 06, 2006 10:20 am Post subject:
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FWIW, Electronic Goldmine has twice now sold the LM13600 for an excruciatingly low price. I overbought and ended up selling some of them to Ray - he was quite satisfied with how they worked in at least his VCA design, and I'd really be surprised if they didn't work fine in his other designs as well. The MS-20 filter is far removed from the silky goodness of Ray's filters....
V-un-V ain't got nuthin' on me for Sound Lab procrastination - I've had a PCB for nearly two years now without once marring its surface with solder. When the time comes, I'll try LM13600's on it.
Cheers,
Scott
Edit: Oh, yes, also I don't think the linearization diodes would be the key - it's if the built in Darlington buffers (pins 7&8 and 9&10) are used that might make a difference in some cases. |
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EraSer
Joined: Apr 12, 2006 Posts: 82 Location: Italy
Audio files: 5
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Posted: Wed Apr 19, 2006 4:03 pm Post subject:
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hello everybody
Can TL082and TL084 be good substitutes for LF442 & LF444? |
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Uncle Krunkus
Moderator
Joined: Jul 11, 2005 Posts: 4761 Location: Sydney, Australia
Audio files: 52
G2 patch files: 1
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Posted: Fri Apr 21, 2006 5:26 pm Post subject:
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Ray said they are generally fine, but that he had a problem with TL0XXs and the Soundlab, but he couldn't remember which bit it was. Try them out and replace if you need to later. It won't hurt anything. _________________ What makes a space ours, is what we put there, and what we do there. |
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EraSer
Joined: Apr 12, 2006 Posts: 82 Location: Italy
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Posted: Sat Apr 22, 2006 12:21 am Post subject:
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thank you Uncle Krunkus
....unfortunately here in my city some ICs are unavailable & (according to traders) 'obsolete' .
I think the best way is buy ICs from electronics-store on-line...
bye |
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blue hell
Site Admin
Joined: Apr 03, 2004 Posts: 24075 Location: The Netherlands, Enschede
Audio files: 277
G2 patch files: 320
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Posted: Sat Apr 22, 2006 3:16 am Post subject:
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balance wrote: | ....unfortunately here in my city some ICs are unavailable & (according to traders) 'obsolete' :?: .
I think the best way is buy ICs from electronics-store on-line... :lol:
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It is currently somewhat hard to buy electronic components in Europe, which has to do with the switch to lead (and other heavy metals) free products (ROHS compliance) which has to be effective in june or so.
For nearly a year already nobody wants to hold anything of the non lead free stuff in stock and lead free is still not readily available. It's still not clear even exactly what components will or will not be replaced by lead free alternatives, but some will indeed, or already have, become obslolete.
I don't expect the trouble to be over in june, although probably we've had the worsd by now. _________________ Jan
also .. could someone please turn down the thermostat a bit.
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Uncle Krunkus
Moderator
Joined: Jul 11, 2005 Posts: 4761 Location: Sydney, Australia
Audio files: 52
G2 patch files: 1
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Posted: Sat Apr 22, 2006 3:20 am Post subject:
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I had to get my LF442/4s from Farnell in Sydney. In Australia at least they are definately not the kind of thing you'll find at the local Electronics store. I found the LM13700s to be even harder to get. I had to get them from digikey in the states. They only sell tubes of 25! Let me know if you have trouble with these and I'll send you a couple. _________________ What makes a space ours, is what we put there, and what we do there. |
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EraSer
Joined: Apr 12, 2006 Posts: 82 Location: Italy
Audio files: 5
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Posted: Tue May 23, 2006 5:38 am Post subject:
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Does anyone know if the J304 is a good substitute for MPF102? |
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ianbargle
Joined: Sep 20, 2006 Posts: 8 Location: california
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hassestrom
Joined: Nov 03, 2006 Posts: 5 Location: bongo
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Posted: Sun Nov 05, 2006 12:43 pm Post subject:
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Mikmo wrote: | Just a little warning.
You can't always substitute 13600 for 13700. 13700 have linearisation diodes, 13600 does not.
If Rays design uses these diodes you can NOT use the 13600
instead of the 13700.
I do not know if this is the case though. |
The 13600, 13700, 5517 all have lin'z-diodes at the input stage
so there is no difference, however what differ is input impedance
of the buffer stage and how these are built internally.
13600, as Iabc varies, bias varies of buffers, there is changes in
buffer Z , makes the 13600 click with rapid CV changes,
the 13700 does not, the 5517 is also somewhat different.
However this is taken from the data sheets those who needs a
in depth information should go and seek in the SDIY archives
since these issues has been examined troughtfully there. |
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Chrometuna
Joined: Aug 14, 2006 Posts: 209 Location: Topeka
Audio files: 3
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Posted: Thu Dec 28, 2006 12:39 am Post subject:
Subject description: CD4066 substitutes? |
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Hey y'all!
I'm having a hell of a time locating as CD4066 chip for the single bus keyboard circuit.
What could I substitute for the CD4066?
I searched around the forum and couldnt find this chip addressed anywhere.
ALSO:
Is anyone making and selling PCBs for the Single Bus (1 SPST per key) Keyboard to CV, Gate and Trigger??? Please?
http://www.musicfromouterspace.com/analogsynth/keybrdcontroller.html |
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Pehr
Joined: Aug 14, 2005 Posts: 1307 Location: Björkvik, Sweden
Audio files: 2
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Posted: Thu Dec 28, 2006 2:09 am Post subject:
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CD4016 Perhaps ? |
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Chrometuna
Joined: Aug 14, 2006 Posts: 209 Location: Topeka
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Posted: Thu Dec 28, 2006 4:53 am Post subject:
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Pehr wrote: | CD4016 Perhaps ? |
Will that really work?
I know nothing about chips.
Cheers
bob c |
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Pehr
Joined: Aug 14, 2005 Posts: 1307 Location: Björkvik, Sweden
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Posted: Thu Dec 28, 2006 5:30 am Post subject:
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I think so. They´re almost the same. The only difference is that 4066 has lower "ON"-resistance, 80 Ohm @ 15V. When 4016 has 280 Ohm @ 15V...
I don't know if that matters for the keyboard... |
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Uncle Krunkus
Moderator
Joined: Jul 11, 2005 Posts: 4761 Location: Sydney, Australia
Audio files: 52
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Posted: Thu Dec 28, 2006 7:01 am Post subject:
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No, it doesn't matter.
The 4016 should work fine. _________________ What makes a space ours, is what we put there, and what we do there. |
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Pehr
Joined: Aug 14, 2005 Posts: 1307 Location: Björkvik, Sweden
Audio files: 2
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Posted: Fri Dec 29, 2006 4:45 am Post subject:
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Etaoin wrote: | I should probably add that my LF411 and 442 are still on order, so although I can't get the VCO to work properly with TL061 and TL062 replacements, I can't yet say it does work with the LF's! I'm just assuming that the reason I can't get it tuned is because I tried replacements. All other components are as specified and it does work fine apart from the tuning. |
Did the LF411 and 442 work better? |
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alfiollett
Joined: Mar 20, 2007 Posts: 4 Location: Norway
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Posted: Thu Apr 12, 2007 5:05 am Post subject:
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I've built one using tl074 and tl072 instead of the lf444 and lf442, and it works fine... |
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slo
Joined: Feb 18, 2007 Posts: 204 Location: Victoria, BC
Audio files: 1
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Posted: Sat May 05, 2007 6:03 am Post subject:
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Mouser lists a LM13600 replacement as NJM#13600D for $0.63, can this be used? |
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goodrevdoc
Joined: Sep 11, 2006 Posts: 288 Location: Philadelphia, PA
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Posted: Sat May 05, 2007 5:38 pm Post subject:
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I got a bunch of the similar NJM 13700D's awhile back. They are running just fine in my SLMS. I think the jury's still out on the 13600, but I personally don't see a problem trying.
-justin |
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hackbox
Joined: Jul 27, 2007 Posts: 134 Location: Australia
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Posted: Mon Aug 06, 2007 5:45 am Post subject:
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Uncle Krunkus wrote: | I had to get my LF442/4s from Farnell in Sydney. In Australia at least they are definately not the kind of thing you'll find at the local Electronics store. I found the LM13700s to be even harder to get. I had to get them from digikey in the states. They only sell tubes of 25! Let me know if you have trouble with these and I'll send you a couple. |
Actually if you go to www.futurlec.com as opposed to www.futurlec.com.au you can get 'em pretty cheap
Fanell might be fast and reliable but they aren't cheap(as I'm sure you know).
Cheers
A
Edit: damn logical spelling gets me all the time!
The links work now Last edited by hackbox on Mon Aug 06, 2007 3:54 pm; edited 1 time in total |
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Uncle Krunkus
Moderator
Joined: Jul 11, 2005 Posts: 4761 Location: Sydney, Australia
Audio files: 52
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Posted: Mon Aug 06, 2007 6:21 am Post subject:
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Thanks for the link Hackbox, but I don't know how to use it
Where do you go from there? _________________ What makes a space ours, is what we put there, and what we do there. |
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hackbox
Joined: Jul 27, 2007 Posts: 134 Location: Australia
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Posted: Mon Aug 06, 2007 3:57 pm Post subject:
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Uncle Krunkus wrote: | Thanks for the link Hackbox, but I don't know how to use it
Where do you go from there? |
fixed it the links work now.
I don't understand why some bits aren't on the Australian website when both of them ship from Taiwan.
Cheers
A |
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hackbox
Joined: Jul 27, 2007 Posts: 134 Location: Australia
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Posted: Mon Jan 28, 2008 12:21 pm Post subject:
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Hmm
Building a 2nd soundlab now and they seem to be having trouble sourcing the LM13700's.
Looks like I'm going to have to substitute or go buy from Farnell. _________________ My DIY and Instrument addiction blog.
http://theawesomepowerofrockets.blogspot.com |
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