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DIY: AES to S/PDIF adapter

The goal is to make a 'pig-tail' adapter to convert AES3 (110 ohm) to S/PDIF (75 ohm). It seems that both impedance and attenuation need to be corrected. This would require resistors.   Currently, the two components work fine together with a cheap off-the-shelf XLR/RCA adapter - with no corrections.  I'd like to make an adapter with corrections and with better quality parts .

Below is a link to a webpage with more info. I know how to solder. Unfortunately, I have no idea how to read a wiring schematic.    Hopefully, somebody in the community can offer instructions as to what value resistors to put on which leg?  I don't wish to use transformers.  This is AES3 - not AES3id.

Thx for your help.   

https://www.ranecommercial.com/legacy/pdf/ranenotes/Interfacing_AES3_&_SPDIF.pdf


steakster

Showing 1 response by imhififan

imhififan's avatar
imhififan
2,108 posts
 
Are there resistors that connect between legs?
 Solder 56Ω resistor to AES/EBU connector between pin 1 and 3,
Solder 82Ω resistor to AES/EBU connector between pin 1 and 2,
Solder 120Ω resistor to S/PDIF (RCA) connector between center pin and outer lug,
Solder 130Ω resistor to between AES/EBU connector pin 2 and S/PDIF (RCA) connector center pin,
Solder a wire to AES/EBU connector pin 1 and S/PDIF (RCA) connector outer lug. 
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