A cry for help: I'm fairly good at doing kits, but I read schematics like a 3 year old, and only understand electronics concepts vaguely.
I'm trying to build a copy of just the mid cut section of the Pultec MEQ-5, as I love its ability to de-muddify lo mids. I've got myself a bank of caps and the multi tap inductor pots and rotary switches, but it sounds like my test rig doesn't cut as much as the around 10 dB cut of the software plug-in version.
I've just done the bit circled in red here imgur.com/a/0T8uVAG but haven't added the resistors or resistors mimicing pots marked in yellow, as I'm not sure of their function for the mid cut part of the circuit, and I'm just inserting the circuit 100% passively on a line signal without the transformers or surrounding electronics.
Should I be adding some of, or all of these bits to make it work properly?
Should I place the circuit within in & out buffers (I was considering the ez3415), or will it do the same job without?
Apologies for exploiting people more knowledgeable.
I’m sure it’s spelled out in detail at groupDIY, it’s been analyzed to death, there’s a plan for a regular pultec with the mid band inserted, versions with different impedances, etc. I haven’t though about it in a long time.
Unfortunately what I was able to find at GroupDIY was a bit above my level. It confirmed it was Lo Z and needed buffering, but what I was able to find required a bit more circuit design experience than I have, and the schematics were on services that had expired long ago…
So I'm still looking for advice on some kind of existing circuit I can shoehorn it into 😬.
Post by craigmorris74 on May 16, 2021 18:51:36 GMT -6
If you search GroupDIY for my forum name and Pultec and mid cut, you'll find diagrams of this circuit that works. This year I sucked it up and built a full MEQ-5 with a solid state make up gain amp for tracking guitars.
If you can't find them I can probably dig them up.