Zen pre-amplifier help

[steenoe]

Does this mean that you need four RCAs (two per channel) to convert single ended signals to a balanced output?

No, you only need one RCA per channel on the input side. You have to short -IN to GND on the pcb, otherwise the circuit says nothing!

If you wanted to transfer the signal to your poweramp as balanced, (on the outputside ) You COULD use 4 RCA's for that. 2 per channel. But most people use XLR connectors for that;
Hope this clears up things, otherwise just shoot

Steen.

 

[Raoul]

OK, I think I got that. Again, very helpful. Thanks steenoe! I have one more question, hope I'm not wearing you out.

I etched a second BZLS PCB which I have modified it according to Henrik's XBOSOZ plan, found here:

http://www.diyaudio.com/forums/attachment.php?s=&postid=499299&stamp=1098780385

If I want to run this board single ended, should I short the negative input in a similar fashion? If so, should I just thread the 10K resistors on the negative inputs into the ground?

Thanks for all your help.

 

[steenoe]

If I want to run this board single ended, should I short the negative input in a similar fashion? If so, should I just thread the 10K resistors on the negative inputs into the ground?

First I have no practical experience with the X'ed BosoZ. But, at looking at the picture you would have to place a jumper, from the inputend of the 10k resistor to GND. So that the 10K is still part of the circuit. Would be nice if someone could confirm this, though

hope I'm not wearing you out.

No, that would take a lot more Glad to help

Steen.