diy "studio" compressor & eq question

tedsorvino · Post by **tedsorvino** » 20 Feb 2022, 20:03

Today at 11:12 AM
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#1
Hi everyone.
I'm quite experienced on building mainly guitar pedals and amps and now I would like to try my luck to the "studio" (semi) parametric eq and compressor world, for personal use. To start with I wouldn't like to try something expensive and very complicated.
So something like a good 3- 4 band (from around 100 to around 15k) parametric eq design with hi and lo pass filters (and maybe Q settings) is good enough for me. As far as compression goes I have worked with the THAT 4301 IC and I like it a lot for use with many instruments and vocals. Any good and tried optical, Vca or fet affordable designs are welcome.
Any ideas, pcb links and schematics for such designs are what I'm looking for. I wouldn't like to deal with overpriced kits etc. So designs with not complicated (3 d printing etc etc) housing would be ideal.

Thanks in advance

Jarno · Post by **Jarno** » 20 Feb 2022, 20:37

Not sure about eq, but a solidstate la2a clone is a pretty straightforward project (so a la4 really), you can build it without transformers for even more lowcostness

See the groupdiy forum.

asbestosaurus · Post by **asbestosaurus** » 22 Feb 2022, 02:10

for a decent and fairly expandable EQ take a look at dylan's Core Shaper. easily found with a search here.

peterc · Post by **peterc** » 04 Mar 2022, 18:43

GroupDIY has loads of projects, with people selling PCBs and great in-depth knowledge
https://groupdiy.com/forums/dynamic-processors.27/
https://groupdiy.com/forums/filters-equalizers.28/

Look for the 1176 projects for a FET-style compressor, and the Calrec EQ by Jakob Erlund is a world class EQ.

Enjoy!