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Posts by chinook9

Well guys, I found what I was looking for.  Now I just have to decide whether to do it, how to go about it, and if it would be worth the effort.  I think I will probably do some reading on basic speaker design before I expend much effort..  
I have been toying with the idea of making wooden cups, ala Smeggy.  Does anyone know of any plans or a guide to do this?  I know that Smeggy said, at one time, that he would share his plans, but I don't think he ever did.  My thought was to transfer most of the DBV#3 mods to wooden cups and go from there.
  Thank you for the feedback on the Brimar.  I have almost purchased one of these, but now I won't.  I will receive a couple of used Mullards soon.  Hope they are better than the Brimar.   The Siemens Halske also get very good reviews.  Hope you have more luck with it.  I expect it will be very good.   I have number of tubes I have received recently and I like most of them.  I have an Amperex 6201 E81CC gold pin that is presently my favorite and a Telefunken made Mazda...
Guys, I happened to have my Sunrise II manual handy.  Regarding setting voltage, under Manual Bias Setting Using a Multi Meter it states "Dial in each side to around 12VDC."   On the next to the last page (no heading) it states "The 6V/12V jumper allows you to use both 6 and 12 volt tubes.  Before powering on your amplifier, you must make sure what voltage your tube runs at and set it accordingly via the jumper.  Attach the jumper tab to the center pin and to the side...
Great!  I use a set of earbuds as the load and put a pillow over them.  Can't hear a thing.  
    Micaiah   I have attached what you need to this posting.
I expect that you really need to run a signal through the tube. I have used music, but now I've started using a freeware program biwavegen and I run pink noise at a somewhat high volume and I use some old headphones as the load. If you can't find biwavegen to download, just PM me and I'll send it to you. Its only 45Kb.
After quite a bit of study, I decided against both the D12 and Leckerton. I ended up getting a Sunrise Project II tube headphone amp. I initially used the DAC from my D10 with it and recently replaced that with a Musical Fidelity V-DAC. The V-DAC is not a great improvement but the Sunrise II is phenomenal. It is more than I could have hoped for in an amp. At $244 built, or $199 in kit form this tube headamp is one of the best buys in audio.
PM sent.  
 I'm looking forward to hearing about all these tubes... and maybe trying some. How long do you plan to burn in before you start making judgements. I've settled on 30 hours, but I'm not sure that's enough. The burn in made a great difference to my CBS Hytron 5814. That is one nice tube.
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