Jump to content

STAX SR-M323A balanced input mod


Recommended Posts

Hello

I would appreciate if somebody could help me. 

I need to install XLR input sockets into my SR-M323A. 

I am fine with soldering and will have no problem installing it physically,  the only trouble is  that I do not understand circuits well.  I am really determined though :)

On the PCB input section I noticed an empty space for a resistor and a capacitor for each channel respectively .

Has anyone done this mod? 

Thanks

Martin

Link to post
Share on other sites

And here are some photos of the PCB.

http://s1378.photobucket.com/user/Mmartin33520/media/IMG_20170528_194002_zpsqheoalkb.jpg.html?sort=3&o=2

R2 and C2 on both channels are empty as well as the third hole just next to the R and L letter on the PCB. Would it be for a negative part of the balanced input signal?

What kinds and values of the caps and resistors should be soldered in there? 

Would it be possible to have a switch for a single ended or balanced mode? If so would it be complicated or difficult to do?

My DAC can work in pre-amp mode so the stock pot is not essential, unless it could be modified for the purpose.  

Maybe at some point I can find a 4 gang one, but for now, I can bypass it completely.

Please let me know if I have omitted any relevant info.

 

many thanks

regards

Martin

 

 

Link to post
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

×
×
  • Create New...