• sub
  • ADAT user
  • Offline
  • Registered: 2021-01-28
  • Posts: 31

Topic: ADI-2/4 Pro SE - ground unbalanced input

Hi,

I've just acquired a ADI-2/4 Pro SE and want to connect my turntable through its phono output via RCA to the Analog input of the converter. As instructed in the manual, I'll be using an adapter TRS plug to RCA. However, the manual also says:

"When using unbalanced cables with the XLR inputs, pin 3 of the XLR jack should be con-
nected to ground. Otherwise noise may occur, caused by the unconnected negative input of
the balanced input."

Does this apply to my use case? If so, how can I accomplish that?

2 Reply by waedi (edited by waedi 2024-07-24 08:22:51)

  • waedi
  • DAW Mastermind
  • Offline
  • From: Swiss Zürich
  • Registered: 2020-12-08
  • Posts: 4,073

Re: ADI-2/4 Pro SE - ground unbalanced input

Instead of TRS to RCA adapter you could use Ts to RCA adaptor for unbalanced connection.
The explanation for XLR connector don't apply to your usecase.

https://thumbs.static-thomann.de/thumb/padthumb600x600/pics/bdb/_12/128509/12321237_800.jpg

M1-Sonoma, Madiface Pro, Digiface USB, Babyface silver and blue

3 Reply by KaiS (edited by KaiS 2024-07-24 08:23:19)

  • KaiS
  • DAW Mastermind
  • Offline
  • From: Germany
  • Registered: 2020-02-05
  • Posts: 3,393

Re: ADI-2/4 Pro SE - ground unbalanced input

You need to use TS-adapters, not TRS (no ring).
These do connect XLR pin 3 / TRS’s ring to ground.

I guess you already do, so this would be fine.


https://m.media-amazon.com/images/I/71RYYYcI7GL._AC_SX679_.jpg

KaiS's Website

  • sub
  • ADAT user
  • Offline
  • Registered: 2021-01-28
  • Posts: 31

Re: ADI-2/4 Pro SE - ground unbalanced input

Thanks both for the feedback! Thankfully I bought the correct adapter.