B-1
jUST GOT MY BOARDS TOADY-YEA-HAAAA-THANKS COLIN
I'M LOOKING AT THE BOARDS AND IT SEEMS THAT IF I'M NOT USING THE INPUT SWITCHING(NO DPDT) AND HAVE MY VOLUME CONTROL BEFORE THE BOARD (NO POTS) THAT IF I HARDWIRE "R1" (IN THE INPUT SWITCH AREA)) TO "W" AND "L1" TO ITS "W" (JUST BELOW C201) THAT I WILL EFFECTIVELY BE CONNECTING "IN RIGHT" TO THE JUNCTION OF R100 AND R102 AND"IN LEFT" TO THE JUNCTION OF R200 AND 202.
DOES ANYONE CONCUR WITH THIS ?
THANKS FOR YOUR OPINIONS
ROB
jUST GOT MY BOARDS TOADY-YEA-HAAAA-THANKS COLIN
I'M LOOKING AT THE BOARDS AND IT SEEMS THAT IF I'M NOT USING THE INPUT SWITCHING(NO DPDT) AND HAVE MY VOLUME CONTROL BEFORE THE BOARD (NO POTS) THAT IF I HARDWIRE "R1" (IN THE INPUT SWITCH AREA)) TO "W" AND "L1" TO ITS "W" (JUST BELOW C201) THAT I WILL EFFECTIVELY BE CONNECTING "IN RIGHT" TO THE JUNCTION OF R100 AND R102 AND"IN LEFT" TO THE JUNCTION OF R200 AND 202.
DOES ANYONE CONCUR WITH THIS ?
THANKS FOR YOUR OPINIONS
ROB
B-1 WITH APPOLOGIES
Sorry Nelson
I'll try it without all the enthusiasm-
If I don't use the DPDT or the Volume pots can I just jumper from R1 in the switch area to "W" and L1 to its "W" and effectively connect in/r100 to r102 and in/r200 to r202?
thanks for your time on the board
rob
also since you seem to be on do you have any problem with using two sets of parrallel outputs-ie 2 c101/r104/r105 combinations for two isolated outputs?
again thanks for your time
Sorry Nelson
I'll try it without all the enthusiasm-
If I don't use the DPDT or the Volume pots can I just jumper from R1 in the switch area to "W" and L1 to its "W" and effectively connect in/r100 to r102 and in/r200 to r202?
thanks for your time on the board
rob
also since you seem to be on do you have any problem with using two sets of parrallel outputs-ie 2 c101/r104/r105 combinations for two isolated outputs?
again thanks for your time
b-1 with apologies
sorrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrry
about
that
r
everyones sooooooooooooooo sensitive-
Nelson I assume its too many hours stairing at boards, too much solder smoke and those damn little bands on the resistors, I guess you have an excuse, but marc?- I wrote the reply to the cap question before i saw nelson's - its friday lets be nice now!
sorrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrry
about
that
r
everyones sooooooooooooooo sensitive-
Nelson I assume its too many hours stairing at boards, too much solder smoke and those damn little bands on the resistors, I guess you have an excuse, but marc?- I wrote the reply to the cap question before i saw nelson's - its friday lets be nice now!
I WANNA THANK...
Sorry... I wanna thank
again Mr Pass for sharing this simple yet fulfilling buffer. I also wanna thank Portland Mike and MHouston who also shared with me simple preamps that I will soon try...simple enough that I could even understand how they work
Anyway, the thread is paying attention to distortion of the stage but I prefer to focus on PS noise, even if PSRR is good. My units are fed through gyrator based regulators, as I've commented before (I did not make the stock PS to compare), because it improved every circuit where I tried it (and I'm lazy to try another aproach).
Last week I implemented -ecdesign's- charge transfer power supply and B1 gained another level of transparency.
See post #2347, here:
http://www.diyaudio.com/forums/showthread.php?postid=1682921&highlight=#post1682921
Next commes the DC coupled B1...
I hope this helps,
M
Sorry... I wanna thank
again Mr Pass for sharing this simple yet fulfilling buffer. I also wanna thank Portland Mike and MHouston who also shared with me simple preamps that I will soon try...simple enough that I could even understand how they work Anyway, the thread is paying attention to distortion of the stage but I prefer to focus on PS noise, even if PSRR is good. My units are fed through gyrator based regulators, as I've commented before (I did not make the stock PS to compare), because it improved every circuit where I tried it (and I'm lazy to try another aproach).
Last week I implemented -ecdesign's- charge transfer power supply and B1 gained another level of transparency.
See post #2347, here:
http://www.diyaudio.com/forums/showthread.php?postid=1682921&highlight=#post1682921
Next commes the DC coupled B1...
I hope this helps,
M
Hi Andrew
Yes they all coincide at the same point with 2 V RMS in/out, same as the previous set of results.
I intend on doing A/B listening tests to compare a 25k pot with a 100k pot, to see if any difference can be peceived by ear.
It might be a while though because I am still finishing my JLH, Naim clone, and F3 amps.
Yes they all coincide at the same point with 2 V RMS in/out, same as the previous set of results.
I intend on doing A/B listening tests to compare a 25k pot with a 100k pot, to see if any difference can be peceived by ear.
It might be a while though because I am still finishing my JLH, Naim clone, and F3 amps.
Re: b-1 apologies-redux
No belching here. lol I'll let someone get you up to lightspeed. (sorry, had to be done)
Where in Maine are you? Anywhere near Warren? I've got an affection (affliction?) for Lie Nielsen tools.
rob lenk said:do i hear homer belching out there?
no worries marc-
whats the lightspeed atten?
r
No belching here. lol I'll let someone get you up to lightspeed. (sorry, had to be done)
Where in Maine are you? Anywhere near Warren? I've got an affection (affliction?) for Lie Nielsen tools.
Re: b-1 apologies-redux
http://www.diyaudio.com/forums/showthread.php?postid=924390#post924390
rob lenk said:
http://www.diyaudio.com/forums/showthread.php?postid=924390#post924390
Thanks Mr. Pass and everyone that helped me out. I added the B1 to my Goldpoint with p-p to make it fit. Amazingly, everything worked out on the first try- no smoke, no sparks! And dead quiet. It's been a few weeks already and I thought I'd share the pics I took along the way with you all. Awesome design, great sound. I've been listening to it ever since.
http://picasaweb.google.com/sparky64567/GoldpointB1Buffer?authkey=e8o6WR3IyqA&feat=directlink
http://picasaweb.google.com/sparky64567/GoldpointB1Buffer?authkey=e8o6WR3IyqA&feat=directlink
