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Building a Dynacomp/Keeley kind of compressor & I was wondering if there is a modern substitute for the CA3080 or the LM3080 ..There are around but not cheap & not from any of my suppliers
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"UP here in the Canada we shoot things we don't understand" -
I've got a few left over from my hobby daze... not sure if I could mail you one?If it still won't get loud enough, it's probably broken. - Steve Conner
If the thing works, stop fixing it. - Enzo
We need more chaos in music, in art... I'm here to make it. - Justin Thomas
MANY things in human experience can be easily differentiated, yet *impossible* to express as a measurement. - Juan Fahey
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Chinese sellers on eBay list them but I would not trust them after getting so many counterfeit parts. I would suggest designing around the more modern LM13600/LM13700 which is basically a dual 3080 plus an unassigned buffer per channel, or the THAT 4301. The 4301 is an excellent part with high performance and low cost and is still available in DIP form. If you are laying out a board for surface mount, there are even more options. The performance of compressor characteristics is primarily in the control side chain nowadays since the gain cells are so good.....if it sounds bad it is not the the cell anymore, it will be in the control signal you send to the port.Comment
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And Peavey used them for years as part number 70403080 (LM3080). They may still have some as well.Education is what you're left with after you have forgotten what you have learned.Comment
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EHX have been using LM13600s and 13700s where the (now extinct) CA3080 and CA3094 were once used in their legacy products (e.g., the bass and guitar Microsynths). These are obviously not pin-for-pin replacements, but are readily available from many suppliers for reasonable cost.
Personally, I'm partial to the SSM2166, which is easy to design with and includes on-chip downward expansion to eliminate the nasty hiss and breathing effects that often occur with stompbox-grade compressors, during quiet passages. Sadly, the chip is not made in thru-hole format any more, but is still available as surface-mount.Comment
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The 13700 works well as a replacement. There are additional components that can be ignored if you want to keep as near to like-for-like as possible; the 13700 has a darlington output buffer and a diode bias arrangement. P221 of the Stompbox Cookbook clarifies how to configure the 13700 interchangeably with the 3080.
The new 3080s I've bought have ALL been total junk - so noisy as to be unusable. They really gave me the runaround in a new-build synth. I ended up getting warranted NOS components at stupid money. Buy cheap, buy twice.Comment
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