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  1. Zaubertuba

    Wood Media PC Case

    I wanted a nice-looking component-sized case for my Media PC source, and everything out there seemed, well, huge. And metal. So I built my own: Even with a Micro-ATX motherboard, it still was a challenge to make things compact. Not a lot of wasted space here: SSD (visible in the...
  2. Zaubertuba

    Tube guy question: Long-tailed pair for gain stage in balanced hybrid amp?

    Have any of you tube guys toyed around with a long-tailed pair as a headphone amp gain stage?  It seems like an elegant way to get a differential input/output amp.   I have a quartet of JISBOS buffers I'm thinking of using as the output stage, and a bunch of preamp tubes (12au/x/t7's) sitting...
  3. Zaubertuba

    1212m finally driver-dead...Xonar STX or is there a newer option?

    Hi Guys!  Life had been busy so I'm trying to get back up to speed after a long hiatus.     I've shepherded my E-Mu 1212m along for quite some time.  Now that my Windows 7 install is bitrotting away and the drivers on the E-Mu just died (actually I think I broke them  ,) I'm not relishing the...
  4. Zaubertuba

    Conductive Plastic -vs-Cermet Potentiometers

    The last stage of my preamp/headphone amp project will be controlled with a pair of nice P&G Faders I found on eBay.   The input stage (it will actually pull double duty as a hifi instrument preamp) may require up to *7* pots per channel (a 4-band parametric plus an opto compressor/limiter...
  5. Zaubertuba

    Hairball Mishap...

    So, I'm sitting in my chair watching Deep Space Nine a couple of nights ago. I have our cat, Daphne, in my lap with a blanket. Nice and cozy. Daphne's really been an outdoor cat since she started a nasty habit of marking things, but I bring her in from time to time when she'll stay put on my...
  6. Zaubertuba

    Returning to Windows...maybe?

    Well, I'm back. That didn't take long. I apologize for the lengthy post, and I know there's a lot of threads like this already around , but my situation is rather complex and I'm suffering from "can't see the forest for the trees" syndrome. Just to recap, I'm the one who posted the...
  7. Zaubertuba

    Mogami Neglex -vs- Stock HD 650 Cable?

    I have a pair of newly acquired HD 580's on the way, complete with the HD 650 cable. I was planning on reterminating the HD 650 cable, to plug the phones into my balanced a47. Then I realized I have an extra length of Mogami 3106 lying around, which is designed to have nearly the same...
  8. Zaubertuba

    What do you like/would like to have in your preamp?

    In the good ol' days, preamps were pretty much all the same: Tuner/Phono/Aux/Tape/Tape 2 with a volume, balance, and maybe a tone control. There's a lot more options these days. So what kinds of inputs do you need/use most on your preamp? What about outputs? Do you like pushbutton selector...
  9. Zaubertuba

    Normalled Balanced Headphone Output Options?

    I'm working on a block diagram for a JISBOS-based balanced active preamp/headphone amp. I'm to the outputs and have a conundrum. From a practical standpoint, I want my line output (to amp or receiver for speakers) to be defeated when I use headphones. On SE designs this is usually handled...
  10. Zaubertuba

    Upgrade Balanced a47 for "Frankensixfifties" project, or move on?

    You guys have to be getting tired of these threads--I'm so indecisive! I'm contemplating a "Frankensixfifties" mod on my already hot-rodded HD 555's (somehow transplanting the 650 drivers in, but angled like the original 555 drivers--hey, it works for the HD 800, right? ). I'm not even sure...
  11. Zaubertuba

    Interest Check - Inland Pacific Northwest Meet?

    I know killz23 had posted about a Spokane/Northern Idaho meet. We've been chatting and wondered if there'd be more interest if we opened it up a bit. Anybody from Boise/Southern Idaho/Eastern Oregon interested in a meet? To give us some time to plan, let's say, October-ish? Boise & Spokane are...
  12. Zaubertuba

    JISBOS Buffer - Future Gainstage?

    Following FallenAngel's suggestion, I'm looking at building a balanced headphone buffer using this JISBOS kit for my next "intermediate" build. Should work well with my low impedance, high-sensitivity phones and my "relatively" hot source. I've noticed the original SOHA is no longer available...
  13. Zaubertuba

    a47 distortion - not enough current...or something else?

    EDIT--Problem fixed. Read on only if you're looking at clues to troubleshooting your own builds. I finished one-half of my balanced a47 build, using the original values from Apheared's design, OPA2134's, and adding Benjamin Feist's TI Rail-Splitter/Buffered power supply. I wired it up as a...
  14. Zaubertuba

    Fader Impedance--Calulating for Maximum Throw

    Not happy with how my preliminary Szekeres builds are turning out, I'm turning to the Apheared 47 as my next option for a balanced build. As the whole point of this project is to see how much you can do on a budget, my cheapskate solution for a balanced volume control involves using parallel...
  15. Zaubertuba

    Sprinkler Cable Wiring?

    I've seen a lot of people use the wire out of Cat 5 network cable for internal wiring on their projects (and some even for interconnects!). I was wondering if anybody's tried the same with sprinkler control cable. I have gobs of the stuff sitting around in my garage, and the strands are at least...
  16. Zaubertuba

    Yet another Szekeres variant - good option for a balanced build?

    I've been looking for an elegant (read: simple) Class A line-buffer design to build into a balanced headphone driver to match to my 1212m balanced source. The 1212m outputs plenty hot--and has a pro-level +4dBu output level so a line-driver should suffice for my HD555's. Just found this, the...
  17. Zaubertuba

    Sennheiser HD 555/595 "Soundstage Mod" Regrets?

    So, I just did the "555-->595" Mod last night, which is basically just pulling the two foam pieces off of the inside of of the capsule screens. The positive difference in sound clarity has me contemplating the more invasive, non-reversible "soundstage" mod. Has anyone who has actually done...
  18. Zaubertuba

    Chicken-Fi

    No, No, No...I'm not talking about what you're eating for dinner. My wife has been interested in keeping chickens for some time, both as a cheap egg source--and because she really likes chickens. She's already checked our local zoning ordinances and we can apparently keep three (No...
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