Photo Gallery

[heb1001]

My first tube amp build

The minimum feedback version of this: The Emperor's New Amplifier with a balanced input stage.

 

[mhouston]

The minimum feedback version of this: The Emperor's New Amplifier with a balanced input stage.

Impressive.

 

[Rokdrigo]

Hi

I have finally finished the latest incarnation of my 12AX7 RIAA preamp (wooden box near the Thorens).

Here you are two complementary pictures of my system.

Enjoy!

--Rodrigo.

 

[scott17]

Exterior design gone horribly wrong...

The overall look did not really turn out like I expected, but it sounds fine.

6BG6-GA single ended, UL & triode, 6SN7 driver/LED bias, dual rectifiers.

Scott

 

[mhouston]

The overall look did not really turn out like I expected, but it sounds fine.

6BG6-GA single ended, UL & triode, 6SN7 driver/LED bias, dual rectifiers.

Scott

Scott17:I like it.

 

[heb1001]

The overall look did not really turn out like I expected, but it sounds fine.

6BG6-GA single ended, UL & triode, 6SN7 driver/LED bias, dual rectifiers.

Scott

Swap the knob for a chrome finish to match the capacitors and swap the protection around the switch to match the handles and it will look great.

 

[6L6]

Swap the knob for a chrome finish to match the capacitors and swap the protection around the switch to match the handles and it will look great.

+1
That's a very good idea to fine tune the looks!

 

[vermeero]

RH Universal

Pictures of my new build, the 'RH Universal'. Schematic by Aleksandar Kitic.
It's a single ended design allowing the use of various output tubes, but one could say it works best with the KT88.
More info on this amp is to be found at the forums of diytube and audiokarma.
By the way, it's sounds really great!

 

[Bas Horneman]

Lovely!

 

[scott17]

Very nice vermeero! What are the output transformers?

 

[scott17]

+1
That's a very good idea to fine tune the looks!

Thanks guys.

 

[vermeero]

Very nice vermeero! What are the output transformers?

Thank you. The output transformers are the AT-12 from HB amp design in Germany.

 

[astouffer]

The overall look did not really turn out like I expected, but it sounds fine.

6BG6-GA single ended, UL & triode, 6SN7 driver/LED bias, dual rectifiers.

Scott

Great detail work! I like the aluminum tube skirts with vents and the guards around the power switch.

 

[jamesfisher]

st35

hand build st35

Handmade Dynaco St 35 Vacuum Tube Amplifier | eBay

 

[sakellogg]

Yes, beautiful. Did you also build the speakers?

Thank you Gregg,
I love tubes and wood and I always try to do my best to match them with my ideas.
Next will be an amplifier with 205 tubes.
All the best
Guido

as in two-hundrid-and five?
holy batts cowman!
may i ask the general idea? like what tubes etc?

 

[bayermar]

That's "205 tubes" as in type "205-D", I guess

See here:
http://www.radiomuseum.org/tubes/tube_205d.html

 

[Peter Georgescu]

205D

Funny: a 205D amp is my next project, too. To be precise, it will be a Western Electric WE42-A clone. I started it in this German forum: Roehren-und-Hoeren - 205D Push-Pull Monos (passend zur Oktal-Vorstufe Mk2), but if someone here wants to share ideas or experience, i'll be happy with that

Cheers,
Peter

 

[Osvaldo de Banfield]

Ok don Osvaldo le mando un gran abrazo y seguimos intercambiando figuritas de dispositivos hechos con válvulas.

Popilin is a good crazy boy, but actually is out of the net. His telephone connection is lost. We chat in some free time.

Actually I'm designing a VERY strange apparatus with tubes , and it is working, although I may fine tune it. When finished, perhaps I post it here.

Here is two samples of it. Imagine.

 

[12B4A]

The TJ/Fullmusic-205D tubes I had bought 8 or 9 years ago bias up quite a bit differently than what the plate curves in that link portray. They seem to match the curves published for the 10 more so than they do for the WE 205D.

 

[kees52]

Popilin is a good crazy boy, but actually is out of the net. His telephone connection is lost. We chat in some free time.

Actually I'm designing a VERY strange apparatus with tubes , and it is working, although I may fine tune it. When finished, perhaps I post it here.

Here is two samples of it. Imagine.

Looks like this, only this is a dual mustage hybrid amp with mosfets as current delivery boys I have no cathode follower, this do only the fets, transconductance of them is a lot higher and so no thin sound anymore, but warm, non connected resistor on the left is for feedback yes or no, pcb is just a quick made one for test, parts is what i did have. Sound is very good, expecial bas has high resolution, picture of the scope is block 20 Khz 8 ohm load.

Tubes are one penthode 6N51P and one 2.5 mu current tube 6C19P .
Sound here on youtube, but do not expect perfection there, some distortion because of mobile phone mic..

real diy testing, real fun. - YouTube