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-   -   B1 without output caps (http://www.diyaudio.com/forums/pass-labs/204493-b1-without-output-caps.html)

xecluded 14th January 2012 01:31 PM

B1 without output caps
 
Is anyone here running B1 buffer without output caps (or is it without input cap???:confused:). I've read it somewhere that you can omit them to improve sound.

massimo 14th January 2012 01:58 PM

Look for DCB1
It's a different design though, deeply "inspired" to the original Pass's B1, but different (dual supply)

xecluded 14th January 2012 02:11 PM

Yeah, i was aware of that though i am more interested to learn about the standard B1.

xenob 14th January 2012 02:16 PM

You can only ommit them if your poweramp has inputcaps.

AndrewT 14th January 2012 03:11 PM

The B1 is AC coupled.
This is because the input operates at a voltage that is not @ audio ground.
and
Because the output operates at a voltage that is not at audio ground.

If your source can drive a high DC voltage input then you may be able to omit the input cap.
If your receiver can accept a high DC voltage input then you can omit the output cap.

If either of these are not the case, then you will break at least one end of your equipment.

A question:
How can you be an active Forum Member for over 3 years and need to ask?

xecluded 14th January 2012 03:12 PM

Quote:

Originally Posted by AndrewT (Post 2861694)
The B1 is AC coupled.
This is because the input operates at a voltage that is not @ audio ground.
and
Because the output operates at a voltage that is not at audio ground.

If your source can drive a high DC voltage input then you may be able to omit the input cap.
If your receiver can accept a high DC voltage input then you can omit the output cap.

If either of these are not the case, then you will break at least one end of your equipment.

Now i understand. Many thanks!!!!


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