Santa brought me a new CNC machining center for Christmas and I'm finally starting to figure out how to use it. My new chassis is starting to take shape!
Looking good Jeff!
Santa was very kind to you. Are you gonna try your hand at ink filled engraving?
Looking good Jeff!
Santa was very kind to you. Are you gonna try your hand at ink filled engraving?
I'm not sure what I want to do yet but I was thinking of mirror polish, then anodize black, then just engrave. Other than the fingerprints it looks good.
Santa brought me a new CNC machining center for Christmas and I'm finally starting to figure out how to use it. My new chassis is starting to take shape!
Nice!

Do the bipolars used in the signal path have a limited lifespan?
Scott,
I have never heard of any such complaints. Perhaps others have a different experience. Most parts are made with improved processes that are simply too new to have such an experience. In any case I fully expect them to outlast me.
It's not a complaint. I was just wondering if degradation of the oxide layer is a "thing" like with polarised electrolytics, admittedly probably only those used in PSU's. I couldn't find any information about it anywhere, so I'm presuming not, but thought I might ask here.
It's not a complaint. I was just wondering if degradation of the oxide layer is a "thing" like with polarised electrolytics, admittedly probably only those used in PSU's. I couldn't find any information about it anywhere, so I'm presuming not, but thought I might ask here.
It's always good to ask. I have noticed that I seem to blow up fewer parts these days than what I did 20 years ago. There is very little evidence that I am any smarter. I suspect the parts in question are better built and can survive more of my abuse.
You are probably more thoughtful and not as much shooting from the hip ;-)
That must be it.
Jan
That must be it.
Jan
Hi Carl,
I use polarized electrolytic cap as recommended by Doug Self. i have 35V Elna Silmic II. C14 on your Schematic and PCB is reversed for same C14 in Linear Audio Vol 5 article page 150. Could you confirm that the schematic in Linear Audio Vol 5 article is the one that is correct? if yes i have to reverse C14 on your PCB. Thank
I use polarized electrolytic cap as recommended by Doug Self. i have 35V Elna Silmic II. C14 on your Schematic and PCB is reversed for same C14 in Linear Audio Vol 5 article page 150. Could you confirm that the schematic in Linear Audio Vol 5 article is the one that is correct? if yes i have to reverse C14 on your PCB. Thank
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Hi Carl,
I use polarized electrolytic cap as recommended by Doug Self. i have 35V Elna Silmic II. C14 on your Schematic and PCB is reversed for same C14 in Linear Audio Vol 5 article page 150. Could you confirm that the schematic in Linear Audio Vol 5 article is the one that is correct? if yes i have to reverse C14 on your PCB. Thank
That's a really good question that has not been asked before! Orientation didn't matter with the caps that I used, but ...
if you are building with polarized Silmics, I would follow the direction as published in the Linear Audio article.
Did anyone measure the offset voltages? Since the offsets are so low, I do not think polarity is problem.
When in doubt I use Nichicon UES or film.
DougS has written that he prefers large V and C to minimize the low freq THD in ecaps.
I also read that someone in the forum measured ecap thd on a number of models/brands, the Nichicon Muse BP UES series was the winner, but only marginally.
When in doubt I use Nichicon UES or film.
DougS has written that he prefers large V and C to minimize the low freq THD in ecaps.
I also read that someone in the forum measured ecap thd on a number of models/brands, the Nichicon Muse BP UES series was the winner, but only marginally.
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Did anyone measure the offset voltages? Since the offsets are so low, I do not think polarity is problem.
When in doubt I use Nichicon UES or film.
DougS has written that he prefers large V and C to minimize the low freq THD in ecaps.
I also read that someone in the forum measured ecap thd on a number of models/brands, the Nichicon Muse BP UES series was the winner, but only marginally.
THD is not a function of brand or V.
That's a really good question that has not been asked before! Orientation didn't matter with the caps that I used, but ...
if you are building with polarized Silmics, I would follow the direction as published in the Linear Audio article.
Pointed out in post #1076
I'm sorry, but I should have advise that I had not used Rick G's post # 876 files yet..I also first attempted using Hicoco's version of the back panel, and found that it didn't fit (a few millimeters off on many parts).
I'll measure myself and will order a new back panel from Schaeffer when my measurements are done. If the new panel fits the board, I'll post the Schaeffer / Frontpanel Express file in this thread.
you are right, unfortunately that it don't fit...i am changing right now the measurements...
Carl by any chance, do you have the quad rca phono socket pdf datasheet?
Thanks
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Carl by any chance, do you have the quad rca phono socket pdf datasheet?
Sorry, I don't but they are easy enough to measure with a linear caliper. I am not at home right now or I would do it myself.
Thank Karl i appreciate that, i don't have a linear caliper.Sorry, I don't but they are easy enough to measure with a linear caliper. I am not at home right now or I would do it myself.
Thank Karl i appreciate that, i don't have a linear caliper.
Well, if nobody else responds I will measure them in a couple of days when I have access and opportunity. Are you looking to create a 1U back panel to go with the front panel FPDs that I previously provided?
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