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  • Welcome to our site! Electro Tech is an online community (with over 170,000 members) who enjoy talking about and building electronic circuits, projects and gadgets. To participate you need to register. Registration is free. Click here to register now.

Recent content by Archival Audio

  1. A

    op amp eq points

    Seeking advice from any clever electronics-people (I am but a humble audio-person). Attached is a portion of the schematic of my favourite audio mixing desk, a Soundcraft 200SR. It has fixed EQ points, 60 Hz, 250 Hz, 5 kHz and 12 kHz, which appear as (respectively) LF, Lo Mid, Hi Mid and HF...
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