SV: [sdiy] Juno voice replacement!

[mark verbos]

Really old ROland stuff (system 700, SH-01, etc) used CA3080 in the 
filter. Later models used the IR3109. (SH-101, MC-202, System 100m)

However, the CV response is exponential. So it is not as simple as just 
4 CA3080s.

Mark



karl dalen wrote:
> Clone? 
> 
> Custom IC (Roland) usually gives custom design solutions!
> But if it's as he says based on LM13700 its neat! :-)
> 
> Was the IR3109 a 3080 derivate or the reverse?
> 
> KDS
>  
> --- mark verbos <mverbos at earthlink.net> skrev:
> 
> 
>>i hope this hasn't been covered yet here. Someone has cloned the Roland 
>>80017A, the sub-board with the VCF and VCF in the Juno 106 and MKS-7 and 
>>maybe others. I have not heard the result, but he claims it is a perfect 
>>match. Cool. Links below.
>>
>>Mark
>>
>>
>>
>>
>>http://users.skynet.be/bk318113/303/juno.html
>>
> 
> http://cgi.ebay.com/Roland-juno-106-80017A-voice-replacement-vca-vcf-clone_W0QQitemZ260010025616QQihZ016QQcategoryZ17401QQssPageNameZWDVWQQrdZ1QQcmdZViewItem
> 
> 
>