Yes, but it will take a while with all the mechanical work with chassis etc. I will probaby add a common mode choke also or another kind of filter. My idea was that this could compensate for using 2 x 8 ohm in the on board filter instead of 2 x 10 ohm in order to hit the correct voltages at the test points so they will not be too high.
A switcher used for pre-amp it a bit unusual but with good filtering I think it will work perfect.
A switcher used for pre-amp it a bit unusual but with good filtering I think it will work perfect.
When I have had some progress I will post new pictures. The chassis will just be a closed alu box. It will look "home made" compared to yours. But good quality "home made" I hope. This closed box was to prevent moving air from sound presure to go in and shake the Nutube. Very little heat is generated so should be ok using a closed box. Especially when PSU is external. I forgot to lift the 270R a bit from PCB. Does it get very hot?
I can see 270R is resting at the end caps…..this may "save it". 0.7W will probably cause it to be so hot that it is not nice to have finger on it for long.
Regarding switcher used for preamp…….I have just built the "Starving Student".....and this amp uses a 48V Meanwell. On PCB there is a small common mode choke to filter HF. It this setup it works fine. A nice thing is that the switching adapter can be placed far away from amp.
Regarding switcher used for preamp…….I have just built the "Starving Student".....and this amp uses a 48V Meanwell. On PCB there is a small common mode choke to filter HF. It this setup it works fine. A nice thing is that the switching adapter can be placed far away from amp.
I too just completed an SS2 and was surprised and pleased at how quiet it was which is why I thought about using a switcher on this one.
Some pics from the 'glowing' or 'burning' front.
(I have posted a few pics from the front before in this thread - but no problem)
Greets
Dirk
Very nice.
Can you please tell me what font you used for the case?
David
B1 Buffer with Korg Triode PCB + Fairchild JFETs – diyAudio Store
I don't know how this case / kit will look like?
Announced for the end of April.
Greets
Dirk
I don't know how this case / kit will look like?
Announced for the end of April.
Greets
Dirk
Cubicincher
I'm building my own case, I was just interested in the Font you used for the lettering. The Font name wasn't jumping out at me in your posts?
Looking thru fonts I loose interest very quickly
David
I have 8 Hammond chokes 56 ohm 1,5 H 200 ma if interested. Lives in Gentofte. From another project. Only problem is what voltage to start with.
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Hi Erlend
Thank you very much for the offer. I think for the Korg I have settled for the 24V Meanwell and see if I with small adjustments can get the test points right. But I will have your Hammonds in mind! ….they could be useful for another project. I can see from Google that you are very involved in DIY HiFi in Copenhagen area!
I would dress the inside of the box with aluminum foil. When I removed the aluminum cover of my B1 I got a little more static noise. Don't forget to make yourself a tinfoil hat as well, against CIA mindreading. Can never be too careful.
to DQ828 #1996
Hello DQ828,
sorry for the late response! I am busy in the job at the moment.
Your question about the font used on the front plate:
It is a german industry norm font called: DIN17, 1-zügig
And I stretched it on the x-axis with the factor: 2
I hope this helps you.
Greets
Dirk
Hello DQ828,
sorry for the late response! I am busy in the job at the moment.
Your question about the font used on the front plate:
It is a german industry norm font called: DIN17, 1-zügig
And I stretched it on the x-axis with the factor: 2
I hope this helps you.
Greets
Dirk
Thought that I knew you, but not the case
No, we have probably never meet each other unless you were at "AudioQuest cable evening" at HiFi-klubben some weeks ago
30.000 Euro 2m speaker cables…...that was "something"....