Quadrature Summing Filter Construction Information

Construction information for DIY projects, including the MS Mid Side Matrix, Elliptic Equalizer, Mastering Console, Phono Transfer System, Insert Switcher and the Dual Class-A Amplifier. You can post your baby pictures here.
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mediatechnology
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Quadrature Summing Filter Construction Information

Post by mediatechnology »

This thread is a place-holder for the Quadrature Summing Filter construction documents.

Boards are available here: https://ka-electronics.com/shop/index.p ... quadrature

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Quadrature Summing Filter Assembled Board

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Quadrature Summing Filter Schematic

Large Schematic: https://ka-electronics.com/images/png/Q ... 052024.png

Mouser Project Manager BOM: https://www.mouser.com/ProjectManager/P ... 7a8d7906a0
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mediatechnology
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Re: Quadrature Summing Filter Documents

Post by mediatechnology »

I updated the Mouser BOM which had a bunch of now-discontinued tape and reel resistor part numbers.
Replacing the tape and reel PNs with bulk made them available.
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mediatechnology
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Re: Quadrature Summing Filter Construction Information

Post by mediatechnology »

Updated the board (QSF_4), schematic and BOM to add 22 pF compensation caps to use NJM2068, LM833, 4558 and other PNP op amps having a >750 kHz peaking response. The are not needed for the TL072, NE5532 or OPA2134.
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