I have made a CDMPro2 based cd transport. CurrentlyI use BNC connection to my Wadia 25 dac. I have heard that aes/ebu is the better option for digital IC's. Can I transform the output of the CDMPro2 to balanced?
Hi jev,
What is for you: a better option for digital IC's?
Do you think about replacing BNC by XLR?
The best wiring between Digital Transport and DAC (Wadia) is a link without noise and reflexion. Reflexion are caused by variations of impedance along the link. Keeping constant impedance in: BNC connector, digital cable and internal wiring is a good practice to avoid reflexions.
Professional studio recording use AES/EBU with XLR, but their environment is different. They use very long cable in a noisy environment. I don't think that you are in this case.
The latest AES/EBU normalization (AES3id) is
- 75 ohm BNC connector
- 75 ohm coaxial cable
- 1.0Vp-p output level
- 1000 max distance
The problem with S/PDIF is the lowest output level 0.5Vp-p. If your Wadia 25 accepts 1.0Vp-p input tension, it might be more useful to change output tension than changing BNC by XLR.
You can find information about normalization in this article:INTERFACING AES3 & S/PDIF
Eric
What is for you: a better option for digital IC's?
Do you think about replacing BNC by XLR?
The best wiring between Digital Transport and DAC (Wadia) is a link without noise and reflexion. Reflexion are caused by variations of impedance along the link. Keeping constant impedance in: BNC connector, digital cable and internal wiring is a good practice to avoid reflexions.
Professional studio recording use AES/EBU with XLR, but their environment is different. They use very long cable in a noisy environment. I don't think that you are in this case.
The latest AES/EBU normalization (AES3id) is
- 75 ohm BNC connector
- 75 ohm coaxial cable
- 1.0Vp-p output level
- 1000 max distance
The problem with S/PDIF is the lowest output level 0.5Vp-p. If your Wadia 25 accepts 1.0Vp-p input tension, it might be more useful to change output tension than changing BNC by XLR.
You can find information about normalization in this article:INTERFACING AES3 & S/PDIF
Eric
Thanks Eric, the spec (pdf document) on the cdmpro2 says "output IEC958 EBU" with description "external clock input 8.4672 Mhz". This means it is a 0.5V output? The Rane document mentions IEC 60958-3.
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