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bhjazz

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Posts posted by bhjazz

  1. Dead JFETs?

    in Do It Yourself

    Posted

    I have a pair of 2n5457/5458 JFETs on a small board as part of a bias scheme for a 12AX7.  The circuit also has a 9v battery.  I cannot get the voltage dialed down, so I checked the JFETs.  The resistance from gate to source (and gate to drain) read the same in both directions: roughly 1k ohm.  These are dead, aren't they?

  3. Part Sourcing Assistance/Advice Thread

    in Do It Yourself

    Posted · Edited by bhjazz

    I'm working on a Larocco prototype right now.  I'm getting down to final assembly and realized that the Alps pot has a 20mm shaft, but it's going through a 10mm front panel.  Most knobs have the set screw at 10mm so I think i'm guaranteed it will fall off at first use.  

    Q1: Does anyone know of knobs (EDIT: that aren't fugly) which have the set screw at less than 10mm?

    Q2: This sounds hokey, but is anyone aware of a way to extend the shaft 5mm?  

    If not, I suppose I'll have to drill out the inside of the panel to regain a few mm.  

    Thanks. 

  4. CH Precision C1 DAC

    in Home Source Components

    Posted

    ...it will take me at least three to four years saving for, now some will think I'm crazy for doing such a thing, but it's something I want to do.  ...Trinity DAC, but I've seen it priced at $60,000, so I ...

    By the time 4 years rolls around digital formats will change, so...at that point the C1 will probably cost 60k.  

    • Like 1

  12. Android 5 + Headamp Pico

    in Portable Audio

    Posted

    Android 5 finally allows USB audio out.  It was available in various forms on Samsung products, but is now baked directly in to Lollipop.  

     

    In attempting to connect my Pico dac/amp directly (no hub) to my Lollipopped Galaxy S5, I am unable to send the digital audio out to the dac.  The Onkyo app actually has a setting for USB Audio, but the phone just hangs and shows no love.  I've had my Pico for years now, so maybe I need a newer version?

     

    Most googling sends me to the other site or to Korean sites with posts about other dacs.  Google is not my friend.

     

    Justin - is this something you are familiar with?  Is there a way to update my beloved Pico?

     

  15. Part Sourcing Assistance/Advice Thread

    in Do It Yourself

    Posted · Edited by bhjazz

    So $16 for a new pot or $16 for 250 nuts?  Hmm.  I suppose I could buy EVEN MORE nuts and be the sole seller of RK27 nuts on the west coast.  

    "Do one job, and do it well."

     

    After even more googling (you know how this goes) I found them here.

     

    Edit: In the future, I found searching for "panel nut" was the most successful.

  17. RIP someone or another

    in Off Topic

    Posted

    RIP BB. 

     

    I saw BB King at Seattle's Paramount Theater about 10 years ago.  At the time, he was already at the point where he sat on a stool for most of the show.  And I wondered, geez: how long can this guy go on?  Here is is near 80 years old, touring and playing most every night.  Amazing.  He played all the favorites, told lots of stories about other blues legends who were already gone, and made jokes about the number of children he may or may not have had.  And probably the coolest part: here was one of the last major bluesmen in the same room as the rest of us mortals, yet he was as warm and friendly as your favorite uncle.  I'm glad I was lucky enough to be at that show.  

     

    See you on the other side, BB.  

    • Like 2
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