Finally my turn to post pictures of my complete B-1. It is a balanced version (or RCA) and it uses 2 DRV-134 (Per Anders PCB) to convert the RCA signal to XLR. A word of caution: I had to use 2 separate transformers to get the DRV-134 to work with the B1.
Cheers to all,
Eric
Cheers to all,
Eric
Attachments
I have a question too... on the B1, i see that the switch for the 2 inputs each have a 1MOhm attached to the input. Why do you need R100/R101 and R200/R201? why not just use 1 resistor and use that one for both inputs?
In other words: what is the advantage of having 2 resistors instead of just 1 connected "higher" up?
In other words: what is the advantage of having 2 resistors instead of just 1 connected "higher" up?
Balanced B1
Hi Gents ,
I have the boards and the caps ready to start my balanced B1 build . Can anyone help me with a schematic and any other info that will help me get off in the right direction . I have seen a mention of a balanced version ,but I can't find anything concrete enough to get me started . Not asking to be spoon fed ,but I do need some help .
I have built a couple of power amps after a lot of mistakes and corrections , so I have a little experience ,but not enough to go off on this project without some guidance .
If there is anyone out there that can keep an eye me I would be truly grateful .
Thanks , Rich
Hi Gents ,
I have the boards and the caps ready to start my balanced B1 build . Can anyone help me with a schematic and any other info that will help me get off in the right direction . I have seen a mention of a balanced version ,but I can't find anything concrete enough to get me started . Not asking to be spoon fed ,but I do need some help .
I have built a couple of power amps after a lot of mistakes and corrections , so I have a little experience ,but not enough to go off on this project without some guidance .
If there is anyone out there that can keep an eye me I would be truly grateful .
Thanks , Rich
If there is anyone out there that can keep an eye me I would be truly grateful
Just post lots of pictures and ask specific questions in this thread and you will get lots of assistance from many people who love to help!
Looking forward to seeing your progress.
Hi Gents ,
I have the boards and the caps ready to start my balanced B1 build . Can anyone help me with a schematic and any other info that will help me get off in the right direction . I have seen a mention of a balanced version ,but I can't find anything concrete enough to get me started . Not asking to be spoon fed ,but I do need some help .
I have built a couple of power amps after a lot of mistakes and corrections , so I have a little experience ,but not enough to go off on this project without some guidance .
If there is anyone out there that can keep an eye me I would be truly grateful .
Thanks , Rich
Hi Rich,
You can go to post #2547 of the thread "B1 Buffer Preamp" on page 255. There is a basic wiring diagram there, It should help. I finished mine, works great. Feel free to ask more questions
Eric
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