Looking at: http://www.vnav.net/index.php?news=131 ... wondering if this is an equipment review? (You might suggest a Babelfish translation for these web pages ... I for one would love to be able to read these.)
You have a very nice looking set of equipment ... very impressive: http://www.diyaudio.com/forums/attachment.php?s=&postid=1147023&stamp=1172750426
... Also wondering if these are your own design or from kits ??
You have a very nice looking set of equipment ... very impressive: http://www.diyaudio.com/forums/attachment.php?s=&postid=1147023&stamp=1172750426
... Also wondering if these are your own design or from kits ??
FastEddy said:Looking at: http://www.vnav.net/index.php?news=131 ... wondering if this is an equipment review? (You might suggest a Babelfish translation for these web pages ... I for one would love to be able to read these.)
You have a very nice looking set of equipment ... very impressive: http://www.diyaudio.com/forums/attachment.php?s=&postid=1147023&stamp=1172750426
... Also wondering if these are your own design or from kits ??
Hi FastEddy
1. That page mention MarkLevinson openning a ref in Vietnam ,not a review.
2. All project of Teablue are his designs, not kits .
Single ended 5842 based headphone amp. All the iron is custom wound electra-print.
An externally hosted image should be here but it was not working when we last tested it.
An externally hosted image should be here but it was not working when we last tested it.
An externally hosted image should be here but it was not working when we last tested it.
Stixx said:
The schematic is just a basic single ended amp. The only trick is that each tube is biased with a single red LED.
The whole thing is modular, so there are little circuit boards attached to the tube sockets that can be removed to use different tubes. I also have boards for the 6c45, a 5687 (both sides in parallel), 6n6p/6c30/6n1p/6dj8, and I am going to do one for the 6688 as well. So far the 5842 is my favorite by a pretty wide margin.
The boards are also made to be adaptable to an ultrapath topology, so I may try that at some point too. For now I am just enjoying it.
The transformers are spec'd at 35mA which is for the 6c45. The 5842 draws somewhat less current, but that is why they are so large. They are 5K:32R, so Grado phones only -- I have RS-1s that I love dearly.
Stixx said:
Fabulous. I am using it with my ad1865N-K based NOS DAC: http://www.ecp.cc/modular_dac.html
-d
" ... The only trick is that each tube is biased with a single red LED. ..."
!!??!! ... meaning that you have an LED in the tube signal circuit ?? ... or in the heater circuit ?? ... or somewhere else ??
Got a schemo / diagram / picture that would explain ?? (I can see how this might be a cool trick, but to what purpose other than as more blinky, blinky lights ??
.....
That's also quite an array of very interesting audio gadgets = http://www.ecp.cc/diy-audio.html ... are all of those yours? ... your designs and construction ??
....
" ... I am using it with my ad1865N-K based NOS DAC: http://www.ecp.cc/modular_dac.html ..."
Very cool = a tube pre-amp / DAC ... any plans for future designs ??
!!??!! ... meaning that you have an LED in the tube signal circuit ?? ... or in the heater circuit ?? ... or somewhere else ??
Got a schemo / diagram / picture that would explain ?? (I can see how this might be a cool trick, but to what purpose other than as more blinky, blinky lights ??
.....
That's also quite an array of very interesting audio gadgets = http://www.ecp.cc/diy-audio.html ... are all of those yours? ... your designs and construction ??
....
" ... I am using it with my ad1865N-K based NOS DAC: http://www.ecp.cc/modular_dac.html ..."
Very cool = a tube pre-amp / DAC ... any plans for future designs ??
" ... as a means to bias up a cathode with a simple, low impedance voltage source that has instantaneous recovery? ..."
I'm sure glad I found DIYAudio.com ... I never really learned much about tube circuits, stuck in the sixties when solid state was hot and then one to digital. I do re-read the ARRL handbook occasionally, but of course that is not nearly as sophisticated as Sy and the rest here at DIYAudio ... Thanks for the info Sy, I'll ask about exactly what you mean in some future thread.
BTW: gianus' amp photo above in quite intreging ... wonder what that old Nixey digit tube does ?? ... the whole approach with thos horizontal outputs sure looks interesting.
Now, On With The Photo Show === this is great
I'm sure glad I found DIYAudio.com ... I never really learned much about tube circuits, stuck in the sixties when solid state was hot and then one to digital. I do re-read the ARRL handbook occasionally, but of course that is not nearly as sophisticated as Sy and the rest here at DIYAudio ... Thanks for the info Sy, I'll ask about exactly what you mean in some future thread.
BTW: gianus' amp photo above in quite intreging ... wonder what that old Nixey digit tube does ?? ... the whole approach with thos horizontal outputs sure looks interesting.
Now, On With The Photo Show === this is great
FastEddy said:!!??!! ... meaning that you have an LED in the tube signal circuit ?? ... or in the heater circuit ?? ... or somewhere else ??
Got a schemo / diagram / picture that would explain ?? (I can see how this might be a cool trick, but to what purpose other than as more blinky, blinky lights ??
SY said:
Indeed. In fact, I learned this concept from SY. Schematic is attached.
The PS is a RCLCRCRC filter followed by a mosfet based regulator (I used one of Ron Welborne's designs as it fit in the chassis well) followed by a CRC filter for good measure.
FastEddy said:That's also quite an array of very interesting audio gadgets = http://www.ecp.cc/diy-audio.html ... are all of those yours? ... your designs and construction ??
Very cool = a tube pre-amp / DAC ... any plans for future designs ??
All my construction, lots of my designs -- though, of course, there is nothing new under the sun, so they borrow parts from all over.
I am working on a 12J5 parafeed linestage right now, and a $75 knock off of the espressivo headphone amp.
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