Recent content by D-500 Flogger

  1. D-500 Flogger

    Greetings from upstate NY - have owned the same Dual 500 the past 4 decades...

    Sincere apologies for going offline for the past while. In this post to the 'whats at your bedside' thread I made a passing reference to what was going on in my personal life...and sadly the palliative/hospice care has come to the end for someone I deeply care for. To say that it took the wind...
  2. D-500 Flogger

    Twin D-500 Restore-a-Thon / Full-Comp WOPL upgrade (+ first a PL 400 S2 WOPLing / Proof of concept / Process debug )

    I'd like to pick up where I left off on the subject of soldering for those joining/rejoining the hands-on audio hobby. I'm writing this from the perspective of someone who had successfully soldered a fair amount in the past (after formal training in the military) ...but was confused by what was...
  3. D-500 Flogger

    Mystery Muse Electronics Model One Preamp

    (apologies in advance to Spence & his quest for Muse Model 1 preamp info... :0) Agreed. It's true that where we position the weight in a chassis will have a direct effect on how fast it can rotate when external forces and/or driver input exceeds traction limits. Just like the ice skater...
  4. D-500 Flogger

    Mystery Muse Electronics Model One Preamp

    Lee, You are thinking of the MR2 -- super nimble car. It is the essence of a mid-engine design, putting as much of the weight inbetween the tires as possible, giving a low polar moment of inertia. (ie: You could change your mind even while in the middle of a corner...and the car would still...
  5. D-500 Flogger

    Twin D-500 Restore-a-Thon / Full-Comp WOPL upgrade (+ first a PL 400 S2 WOPLing / Proof of concept / Process debug )

    Hmmm -- what I pointed to yesterday at the Google level has already been swapped out? FWIW here's a clip of what I was referring to: More & more it seems that when I'm trying to find real info on the internet it's like wading around in the sewage treatment plant searching for a fine box of...
  6. D-500 Flogger

    Variacs N Stuff

    Glen, I went to a inflation calculator on the interwebs, and queried what is the 1958 <-> 2022 conversion rate? Here is the response: A 2022 dollar is worth ~ 1/10 of the 1958 dollar. So, if you take your purchase price of $60 x the inflation rate since '58 = $591.78. Yeah, I'd say that...
  7. D-500 Flogger

    Variacs N Stuff

    Glen, While researching my own Variac I remember seeing the original introduction of the 20 amp line to join the existing Variac family. The knob & face on your unit triggered this memory. As you can see your portable 'cased' model (W20M) is highlighted: (Refer to attached .pdf for the...
  8. D-500 Flogger

    Variacs N Stuff

    Glen, In the land of audio the general rule of thumb used to be that the larger the volume knob, the better the sound that was implied. And I do know that the large 'flywheel' tuning wheel on the old Marantz receivers always gave the very best tactile feedback while watching the tuning meter...
  9. D-500 Flogger

    Twin D-500 Restore-a-Thon / Full-Comp WOPL upgrade (+ first a PL 400 S2 WOPLing / Proof of concept / Process debug )

    File under you can't trust everything you see on the Internet: I know from working on cars that the conventional 12v lead-acid batteries are heavy, but I wanted a quick ballpark on a range of weights. So I googled "12 volt car battery weight" and here's what I got as a response. I had no idea...
  10. D-500 Flogger

    Twin D-500 Restore-a-Thon / Full-Comp WOPL upgrade (+ first a PL 400 S2 WOPLing / Proof of concept / Process debug )

    RoHS = The Return of an Old Enemy to Electronic Reliability If you've ever decided on a plan of attack with the old saw, "If it ain't Broke, Don't Fix It", then you will appreciate the havoc that well-intentioned yet non-technical types have inflicted on those who are responsible for...
  11. D-500 Flogger

    Twin D-500 Restore-a-Thon / Full-Comp WOPL upgrade (+ first a PL 400 S2 WOPLing / Proof of concept / Process debug )

    Hi J!m, During a previous conversation with my D-500 resto tour guide, (Glen Grapplesaw) he shared the fact that Octopart was a really good place to shop for electronic-related stuff. Sure enough, once I had figured out the mfg part number for my personal preference (Kester '44' rosin core...
  12. D-500 Flogger

    Twin D-500 Restore-a-Thon / Full-Comp WOPL upgrade (+ first a PL 400 S2 WOPLing / Proof of concept / Process debug )

    The Solder Chronicles As part of restarting the electronics hobby I took a quick inventory of what solder I had left from the last big wiring project. As it turned out, there was precious little, which meant that I had to spend 0 ergs of energy justifying starting fresh with the best solder...
  13. D-500 Flogger

    Mystery Muse Electronics Model One Preamp

    8991XJ, I looked over the high-res photos, and all of the individual component date codes I saw would support your theory that the first two digits of the serno ( "90" ) as the year of manufacture: Pacific Transformer: "November 1989" Big blue 10K ufd PS cap: "8914" Motorola 2N2914 (dual...
  14. D-500 Flogger

    Twin D-500 Restore-a-Thon / Full-Comp WOPL upgrade (+ first a PL 400 S2 WOPLing / Proof of concept / Process debug )

    Glen, when you have a $$$ tool (replacement cost) that really supports your workflow, and you can buy a spare parts donor for $$, that's definitely the way to go. (Anything that takes the fear of failure out of a tool in heavy rotation is a very savvy thing to do.) Especially given the way...
  15. D-500 Flogger

    Finally joined up

    Larry, We seem to be on parallel paths. During the latter half of my career I had been promising myself that if/when I made it over the retirement finish line I would unearth/renew all the PL gear that I had acquired along the way. I'm a relative newcomer myself, but hanging out in here is...
Top