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In Reply to: RE: Strippers posted by 1973shovel on May 15, 2017 at 16:07:40
Hi,
thanks for the info. I'll practice before applying the final solder job.
Shovel, the board I'm putting in for the large aluminum electrolytic is from this guy Chart Chong which I got 8 years ago. It looks simular to the board in the video.
You won't believe this Shovel but my favorite preamp, not a passive one I built, is the Last Pas by David Vorhis. I got mine hooked up to a ST-35 in my bedroom. A friend wired mine in a trade for another PAS and a faceplate I made to hide missing switches and controls back in 1990. I still have the article on it if you need a copy. I got to get you a picture. Take care....Mark K.
Follow Ups:
I'm not at all surprised that you enjoy your "Last PAS". I enjoy mine too, and I've been using it problem free for at least 25 years. It's good to know someone else out there actually built it. You're the first other Inmate I recall ever mentioning it. Thanks for the offer of the article, but I still have mine, unfortunately not in PDF form, but a hard copy.
Have you tried the EFB mod on your ST-35? If not, I recommend it, and your tubes will thank you!
At the risk of redundancy, please look hard into the AC wiring of your upcoming MK-III project, and put the fuse, thermistor and switch all on the hot leg.
Be safe, and have fun.
"Suddenly, I'm not half the man I used to be. 'Cause now I'm an amputee" J. Lennon
Hi,
Shovel, my pad 5 years ago. Try and find the Last Pas, it's got my home made faceplate....Mark K.
I see a couple of contenders, but I'm not spotting it, Mark. My first choice was the piece directly above the turntable, but that looks too short to be a PAS chassis. Not that it couldn't have been built in something else though.
The gold unit next to that looks like a possibility, but the number of knobs doesn't equate. I built mine with one knob for the volume control, and three small switches; Line Stage/Phono, two auxiliary inputs (functional when first switch is in "Line Stage" position), and a Stereo/Mono switch.
I don't see the mammoth filament cap bank sitting behind any of them, which is also hindering my search for yours.
You're going to have to tell me which one it is.
"Suddenly, I'm not half the man I used to be. 'Cause now I'm an amputee" J. Lennon
Hi Shovel,
I don't know what to tell you but the wiring is from the Last PAS. I know what you mean about the big cap banks, mine came without them...I saw them in the article.
It's in the middle. I traded an extra PAS to a new friend from the old Audiomart. He wired the preamp and a Stereo 70 Purist Audio mod for me. In return I made up a faceplate.
I went to a trophy store and had a little brass plate made up that said (Modification by Bob Gates) just big enough to cover the tone controls. A little strip of wood covers 2 slide switches. I only have on/off and tape monitor. I ran out of PAS-2 knobs so I used some from a SCA-80Q or PAT-4. It used to be spit -shine bright but now may look like Grandpa Munsters old little dusty Eico.
I still talk to Bob all the time, an audio penpal from the early eighties. He was room mates in college or the Air Force with Jim Aud who runs Purist Audio. If something differs from the original Last PAS it's okay with me. I look in awe at some of his soldering.
I know a year ago you tried to show me how to send a picture, I still have the instructions written down. Well Vinnie made it simple enough for simply me to do it now....but he might of awakened a sleeping giant as now I could attack with quirky audio project pictures much like the boring slide shows Fred Rutherford projects for the Cleavers...take care Mark K.
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