[sdiy] LT1228

[Bob Weigel]

Hmm.  I can't find the link but that's not the diagram I downloaded way 
back when.  It's sideways and a reversed .gif image (ie. black 
background).  And no values were given on resistors.  Can't recall where 
I downloaded it..got it on a google search for delta a long time ago.  
Looks like a nice project though and yes I can hear how some 
similarities in the responses.  -Bob

tomg wrote:

>Not that I know of but I built one anyway :)
>It is very nice a lot like the 2044 very very
>very smooth....
>
>http://www.ele4music.com/pdfs/vcf12a.pdf
>
>
>Regards
>Tom
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>
>>The 13600 Korg used for the filter in the Delta and it's quite nice.  
>>That diagram is online.  -Bob
>>
>>Ray Wilson wrote:
>>
>>    
>>
>>>I think the LM13700 chip is excellent. In my opinion it is miles 
>>>better than the CA3080 and definitely on par with the CA3280.
>>>They are relatively inexpensive and just a great chip. I know I'll 
>>>hear about this one.
>>>
>>>Ray
>>>
>>>
>>>
>>>----- Original Message ----- From: "Gabriel Lindeborg" 
>>><gabriel at lindeborg.org>
>>>To: <synth-diy at dropmix.xs4all.nl>
>>>Sent: Friday, May 20, 2005 10:03 AM
>>>Subject: Re: [sdiy] LT1228
>>>
>>>
>>>      
>>>
>>>>Am I crazy or blind but it seems as if National still produces the 
>>>>LM13700. Is the LM13700 chip that bad?
>>>>http://www.national.com/pf/LM/LM13700.html
>>>>
>>>>//Gabbe
>>>>
>>>>Oakley Sound wrote:
>>>>
>>>>        
>>>>
>>>>>Anyone used one of these? Its an OTA with output amp and its seems 
>>>>>to still be available from Linear Tech. Its a bit pricey though and 
>>>>>the offset spec is nothing to shout about. Might be worth a look 
>>>>>though.
>>>>>
>>>>>http://www.linear.com/index.jsp
>>>>>
>>>>>Tony www.oakleysound.com Oakley Modular Systems
>>>>>Penrith, Cumbria, England
>>>>>
>>>>>          
>>>>>
>>>      
>>>
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