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The Sontec EQ is a nice great and outstanding Equalizer with history. The Original Idea and Design was made by Burgess MacNeal and George Massenburg for the first parametric Equalizers. You can find a nice retrospective here on the Universal Audio Website.

We ordered the PCBs from Igor in December 2012.

A good help is the Sontec Building Thread at DIY Group Forum

Our stores where Reichelt.de, Mouser, Alphastat, Segor Berlin

Empty Power Supply for Sontec EQ
Empty Power Supply for Sontec EQ
Arrived Sontec PCBs from Igor
Arrived Sontec PCBs from Igor

start soldering…

Sontec Inputboard 1
the first Resistor is safe.

We can’t find any 55K Resistor at Reichelt.de, so we had to build a 55K Resistor based on a 49.9K and a 5.10K Resistor.

Making a 55K Resistor
making a 55K Resistor based on a 49.9K and a5.10K Resistor
55K Resistor for the Sontec Filter Board
the final 55K Resistor for the Sontec Filter Board
Finished 55K Resistor on Signal Board
Finished 55K Resistor on Signal Board
Resistors on Sontec Signal Board 2
Resistors on Signal Board
Resistors on Signalboard
Resistors on Signal Board in detail
Evy at soldering Resistors
Evy at soldering Resistors

One of our girlfriends wants to solder too, so we showed her how to do it.

Evy wants to soldering to
Evy presents her work. She’s proud of it. =)
Evy presents the Inputboard
Evy presents the Input Board

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