how to match transistors?

[Stewart Pye]

At 02:59 PM 3/01/00 +0100, Doctor Schinkelfunk wrote:
>Hi everyone!
>This is going to be part of an modular syth I want to build, using Moog 
>oscillators (921B), ASM oscillators, Roland filters (system 100m, juno), 
>Arp filters (4012, 4075), EMS filters, Oberheim filters (SEM) etc. Any 
>ideas for VCA's and envelope generators? This project is still in its 
>'drawing board'-stage, so if any of you have tips or suggestions please let 
>me know.
>BTW: what chip is used in the juno 60/106 ? Is it a curtis IC, or a custom 
>Roland chip?

I wouldn't suggest building a VCF based on the juno. The chips are rare and
expensive. If you want a Roland filter you could use the SH5(ladder) or
100M(3080) or any of the other discrete designs.


Stewart Pye.