Thanks for your answer.
On my Aleph J, I use a Murata Ceramic Disc. I don't remember where I was told to choose it. Is to ok (it's only 250 Vac)?
OK.
I just copied the value on 6L6's schematic (given by Wayne, I think). I'll have a look at this thread.
Do you mean that it is useless in EU or that the ground loop breaker should be wired differently?
the value of the snubber cap is a function of the leakage inductance of the transformer. to me it seems a bigger issue with EI core xfmr than toroids. in any event, i havent found ringing to be a significant issue.
an electrical code/safety issue --
Hi, I'm new here and at 6L6 no answer found. I am finished with a channel pearl two, just I do not know what the LED`s should I take? 1.7V clear but current and power are different and I do not know which. Thanks in advance.
I've just finished my phono stage.
Great sound is coming from this little box. Added the cap in series with R14, I had to bypass R1,R2 and R30, R32, otherwise it would not start (don't know why).
Thank you Wayne for making this happened and 6L6 for guiding me with your tutorial.
Great sound is coming from this little box. Added the cap in series with R14, I had to bypass R1,R2 and R30, R32, otherwise it would not start (don't know why).
Thank you Wayne for making this happened and 6L6 for guiding me with your tutorial.
Attachments
There was something with bias q10 and q11. The is from 2mA to 30mA, which already makes a difference.
dezibaby - As 6c4c said, any red LED will be fine.
flancfuster - Wow! Beautiful! Your build looks very, very nice! Congratulations on a successful build. 😀 😀 😀
flancfuster - Wow! Beautiful! Your build looks very, very nice! Congratulations on a successful build. 😀 😀 😀
That's not completely true. I once used a red led from Radio Shack that I failed to realize had a resistor built in. Don't do that!
I'm going to lead you all Wayne Colburn.
"The red reference LED we use is a Everlight MV50640 Gallium Arsinide. Not super critical."
Greetings to all. A channel runs with 2mA LED, if that is good? A channel is difficult to evaluate anyway. One thing I notice is that all instruments are not miscible, that are all pressentz in the room.
"The red reference LED we use is a Everlight MV50640 Gallium Arsinide. Not super critical."
Greetings to all. A channel runs with 2mA LED, if that is good? A channel is difficult to evaluate anyway. One thing I notice is that all instruments are not miscible, that are all pressentz in the room.
Pearl 2 finished!!
Pearl 2 successfully completed!
I would like to thank Jim for guiding me through the project. Wayne and Nelson for the share of your knowledge and amazingly superb phono design.
A combo of Pearl2 + Rega P5 + Denon DL-103r is ridiculously good. I feel like rediscovering my music all over again!
IMG_9061
IMG_9054
Pearl 2 phono
Pearl 2 successfully completed!
I would like to thank Jim for guiding me through the project. Wayne and Nelson for the share of your knowledge and amazingly superb phono design.
A combo of Pearl2 + Rega P5 + Denon DL-103r is ridiculously good. I feel like rediscovering my music all over again!
IMG_9061 IMG_9054 Pearl 2 phono
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Hello together, both channels "breathe" already. Only without chassis and powered by batteries. From the beginning had the less bass and amplification. I had as well as in the guide of Wayne, Capazitors C16 and C12 from two 0.1mkF to a 0.22mkF is now enlarged is bass enough. And instead of R15 short-circuit, I had built 33 ohms resistance, I did not understand that, but that actually broke to more profit, my guess so 6-8 dB. And I would have liked to know how much gain is in fact and whether the output transistor will not overload. Thanks and I apologize for language errors, I use only Google translator.
Very nice builds guys. I have some more things to finish up so 6L6 (Jim) can do the build guides.
And still what: what bothers us a fifth input transistor, Q9a install? We gain more power less noise and adapt to the next transistors you know as professionals?
I thank you in advance.
I thank you in advance.
Power supply is ready. Positive rail has + 36V, negative -36.5V. Something too much, what can you do about it? And Saund was somehow more pleasant with Batarie .... or am I wrong, I do not know.
Output snubber in chimpamp power supply
I've been working on all the power supplies in my Pass/FirstWatt components and have finally gotten to my Pearl II supply (I'm working on installing input snubbers).
The supply for the Pearl II incorporates a board from Chipamp.com which has onboard output snubbers. When I originally built the supply I populated the boards with the snubber parts. It occurred to me that I really didn't need these parts, so while I had it apart I pulled them out. I put the supply back together because my brother was coming over and we were going to "spin some tunes", so there are no other changes to the supply.
When I put the Pearl II back in the system I had no expectation of a sonic difference so I was really caught by surprise because there's a huge difference, this thing sounds way different. Not a subtle difference, but a two grooves in jaw hitting the floor kind of difference.
Can somebody explain to me what in the world is going on here?
I've been working on all the power supplies in my Pass/FirstWatt components and have finally gotten to my Pearl II supply (I'm working on installing input snubbers).
The supply for the Pearl II incorporates a board from Chipamp.com which has onboard output snubbers. When I originally built the supply I populated the boards with the snubber parts. It occurred to me that I really didn't need these parts, so while I had it apart I pulled them out. I put the supply back together because my brother was coming over and we were going to "spin some tunes", so there are no other changes to the supply.
When I put the Pearl II back in the system I had no expectation of a sonic difference so I was really caught by surprise because there's a huge difference, this thing sounds way different. Not a subtle difference, but a two grooves in jaw hitting the floor kind of difference.
Can somebody explain to me what in the world is going on here?