• From: Bern
  • Registered: 2011-03-18
  • Posts: 36

Topic: HDSP 9632 XLR adapter to RCA assymetrical, XLR wirering?

Hello,

I still have my old Hammerfall 9632 working great but suddenly I'm in a doubt about the adapter that I use between my XLR breakout line out and my RCA tube amp input! I use this adapter :

https://www.neutrik.com/en/product/na2fpmf

Which has pin 1 & 3 to the ground and pin 2 signal. But in the RME manual they say that by use of the XLR breakout connected to an asymmetrical device (here my amp) the pin 3 from the XLR should not be connected because this will influence the DHT.

So what does that mean, the pin 3 should not be connected as usually = Audio Signal (-) or even not connected to the ground at all ?

Thanks for help.

2 Reply by MC

  • MC
  • MC
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  • Registered: 2007-04-06
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Re: HDSP 9632 XLR adapter to RCA assymetrical, XLR wirering?

Not connected at all. Right now it is a short circuit for that signal.

Regards
Matthias Carstens
RME

MC's Website

  • From: Bern
  • Registered: 2011-03-18
  • Posts: 36

Re: HDSP 9632 XLR adapter to RCA assymetrical, XLR wirering?

Thanks for your clarification MC,

Do you have any suggestion about a connector that follows that rule or the only way is DIY with a blank connector ?

Does this actual state damage anything ?

4 Reply by MC

  • MC
  • MC
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Re: HDSP 9632 XLR adapter to RCA assymetrical, XLR wirering?

It might in the long run at higher levels. But even if not THD is higher. I am not aware of a premade adapter-connector like this, but cables XLR to RCA soldered this way had been mentioned here before, so they are available.

Regards
Matthias Carstens
RME

MC's Website

  • From: Bern
  • Registered: 2011-03-18
  • Posts: 36

Re: HDSP 9632 XLR adapter to RCA assymetrical, XLR wirering?

Thanks a lot ! I will look around and probably DIY.

Fortunately I don't listen at high levels... Burt now I'm aware!

  • vinark
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Re: HDSP 9632 XLR adapter to RCA assymetrical, XLR wirering?

Or get the unbalanced break out cable, it has cinch.
Or disconnect pin 3 in either the break out cable or the adapter cable. Just open it and either de-solder it or cut it

Vincent, Amsterdam
https://soundcloud.com/thesecretworld
BFpro fs, 2X HDSP9652 ADI-8AE, 2X HDSP9632

7 Reply by faucon50 (edited by faucon50 2024-08-04 14:18:18)

  • From: Bern
  • Registered: 2011-03-18
  • Posts: 36

Re: HDSP 9632 XLR adapter to RCA assymetrical, XLR wirering?

Hi vinark,

I need the XLR breakout because of the mic amp which is in XLR that I need to take acoustic measurements.

Yes, I will try to de-solder the pin 3 from the adapter if I can open it, it's an adapter not a cable (see the link @ 1).

Thanks

  • vinark
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Re: HDSP 9632 XLR adapter to RCA assymetrical, XLR wirering?

Ah ok, opening might be difficult by the look of it. Do you need the XLR out too? Otherwise desolder that one?

Vincent, Amsterdam
https://soundcloud.com/thesecretworld
BFpro fs, 2X HDSP9652 ADI-8AE, 2X HDSP9632
  • From: Bern
  • Registered: 2011-03-18
  • Posts: 36

Re: HDSP 9632 XLR adapter to RCA assymetrical, XLR wirering?

Yeah, sound difficult to open that stuff but I'll still try, they mounted it so...

Which "XLR out" do you mean ? My amp is connected to the XLR ligne out trough this RCA adapter, so yes I need the XLR out, if you mean that ?

  • vinark
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Re: HDSP 9632 XLR adapter to RCA assymetrical, XLR wirering?

No I mean for other purposes then this. As far as I remember you can open the XLR of the breakout cable and desolder there. Easy to undo later if needed.

Vincent, Amsterdam
https://soundcloud.com/thesecretworld
BFpro fs, 2X HDSP9652 ADI-8AE, 2X HDSP9632
  • From: Bern
  • Registered: 2011-03-18
  • Posts: 36

Re: HDSP 9632 XLR adapter to RCA assymetrical, XLR wirering?

Ah ok, no in fact I don't need the XLR line out for other purposes then just my tubes amp. So yes, good idea to undo the pin 3 at the breakout itself! But, does it matter if the cable remains still attached at the other of the of the XLR breakout or if the XLR/RCA adapter with the pin 3 is still connected? Because the pin 1 & 3 are soldered/bridged together in the adapter and what goes trough pin 1 goes trough pin 3, no?

I will try the adapter first, if I can change it I will go for your easy good idea !

Thanks a lot.

  • vinark
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Re: HDSP 9632 XLR adapter to RCA assymetrical, XLR wirering?

No that is 100% sure no problem, it is important for the amps of the card that there is no short on pin3 to ground and like this there is nothing connected to pin 3 at that end. What happens at the other end does not matter, that is unbalanced anyway

Vincent, Amsterdam
https://soundcloud.com/thesecretworld
BFpro fs, 2X HDSP9652 ADI-8AE, 2X HDSP9632
  • From: Bern
  • Registered: 2011-03-18
  • Posts: 36

Re: HDSP 9632 XLR adapter to RCA assymetrical, XLR wirering?

@ vinark: Sorry for the late reply, I didn't see your answer.

Thank you.