I will be joining rasmushorn from Denmark. Plane tickets are booked, but traveling light I won't bring much. I don't see any Sennheiser HD-800 in the list. Mine are recabled to balanced using MoonAudio BlueDragon cables, but I have an adapter to SE, so they will fit with any amp shown. If...

Westone Product Announcement Party....!  In ear customs...! I will literally cross the Atlantic Ocean to experience this.  (pure anticipation actually drove me over here all ready is it too late to join you tonight?)  

As much as I would love it to be in Copenhagen, I think Berlin would stand a better chance of attracting vendors. It's true there has been meets in Copenhagen, but this would be a different scale anyway. For a step up I think Berlin would be a fine choice. Regarding arranging the event...

Quote: Originally Posted by digger945 I have used heater voltages from 5.8v to 7v for 6.3v tubes and I really don't see much difference. No difference at all in sound to me. I will be looking for something that I think you could use. Do you ever shop ebay? Have you decided if you want...

Quote: Originally Posted by Ferrari ... to get 3V ... 20V DC out. Yeah, I see the hinted voltage drop. So 6V AC may only give me 4.5-5V DC and my plan suck. 6V AC is too low and using the 6V output in series to get 12V is too much for the LT1083. I guess it was too 'perfect' to...

Quote: Originally Posted by tonearm You might want to go the dual transformer route. Separate one for the heaters so you can fire them up first using a delay circuit. Apex Jr has 160VA Avel Lindberg transformer (with dual primaries for 230volt operation) that are suitable for the HV...

I really appreciate your comments, you are very helpful digger945 and dBel84! I have not bought the transformer yet. Looked at this transformer because it's supposed to be 'audio grade', shielded etc I know 160VA would be more than enough for the amp, but they have no 160VA/30V versions of...

ok digger945, I'll post a resume, saving you the scrolling ;-) Quote: Originally Posted by AffeX I'm planning this NT-LN 250.30-6 (250VA/2x30v/2x6V) shielded audio torroid from THEL for my balanced EHHA build. My idea is to use 2x30V as is for the s22 psu, and from same torroid...

Niiiice work, John! Great finish and very fitting for the HD800, that's also nicely blended into the background. And the words, man....no doubt Ti deserves it all!

Quote: Originally Posted by AffeX Thank you for noticing this Ferrari. I also wondered if the 12V would be too much, as you earlier suggested 2x9V. So from your post I read this: 1. I can run both s22 and heater psu from same torroid without compromising sound quality - otherwise...

Quote: Originally Posted by ujamerstand Would it be okay if the power supply outputs 12.6V DC, and feed the tube heaters in series? Is the wiring like this: V+ ---> V+ Tube1 GND ---> V+ Tube2 GND ---> GND I believe so. Sinking from your 15VAC to 12,6V DC sounds more right, than...

Quote: Originally Posted by Ferrari It's not a very good idea to use 12V secondary voltage to make 6.3V DC. The heatsink will get unnecessary hot, even without load. Remember that the voltage after the rectifier bridge is ~16V - 17V. Thank you for noticing this Ferrari. I also...

Quote: Originally Posted by ujamerstand I think if you want to use the epsilon12 circuit you must use the values in modified versions of it. Such as the millett minimax. The higher values in R11 (1M) and C7 (470uF) helps to lengthen the delay at startup to around 47 seconds. The default...

I'm planning this NT-LN 250.30-6 (250VA/2x30v/2x6V) shielded audio torroid from THEL for my balanced EHHA build. My idea is to use 2x30V as is for the s22 psu, and from same torroid connect the 2x6V in series to provide 12V for this power regulator a dual LT1063 power regulator, suggested by...

Can't guide you there, ujamerstand. I'm planning to implement epsilon12 as is - no tweaks.

@regal and dBel84 I see what you mean and I appreciate your concern. I can see that EHHA might not be as much a beginners build as the SOHA, but I'm determined on the EHHA, and I'll just have to read more and investigate further until I know what I'm dealing with. But I thank you both for help...

@regal: Yeah, I recon the difference between the two. You really don't need to defend Alex, as I don't intend to attack him cause I have the deepest respect for his work and his contribution to this community - all services free of charge. But having 'someone' to sum up all the valuable info...

And now even I get it......ordering one of those today. Thanx Ferrari! Sorry if I only added confusion. I guess that's the difference of building this amp and actually know what your doing and (like myself) just trying to read all the thousands of posts to try and grasp the good stuff. I'm...

Quote: Originally Posted by Ferrari Mattias, another (cheaper) alternative is just picking one of this power supply. Connect a 50W/2x9V toroidal transformer to it and dial the output to 6.3V and you are done. This PS has two 6.3V outputs (instead of only 1 output of the H-PS-1), use...

Hmm...yeah, I found this thread: http://www.head-fi.org/forums/f6/how...uators-440942/

I found a link to these on another thread: High Quality Audio & Industrial Attenuators Anyone tried them or having any experience with them, cause they do look really nice?!?

Payment sent, but stupid me...I also forgot the slot number. IPodPJ: Sorry, I know this is a time consuming task for you, and thank you for doing this! Ti Kan: Enjoy your new cans, when they arrive!

@Ferrari: Thank you. It's info of great value for me.

@ShaneP and Ferrari Thanx for the explanation and fast reply, even if it was a total noob question ;-) Ferrari, could I get you to describe some details in your build, such as: - What tubes did you use - and what tubes do you prefer for the build? - What did you use for heater supply, and...

Quote: Originally Posted by Ferrari A couple of snapshots of something in the making… Ferrari, I know this is an old post of yours, but I must say I am swept away by your fabulous builds. They are great samples of design and craftmanship! I'm planning a build myself...