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#31
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Coming along well. I am at a stopping point until I get the capacitors in. Both transformers are in and wired up. I wanted to keep it somewhat period so I didn't want to use any tiewraps. I found wax coated cotton string at a craft /beading store. Works very well. I can't wait to fire it up! More pics here...http://web.me.com/johnhuber/Tube/Phase_2.html
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McIntosh MC-30s, Altec 345a, Sansui 500, Fisher 800c, HK Ballad A230, 1 Eico HF-60, 1 Dynaco MkII, HK ST-7, Mission TT and a bunch of other crap. |
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#32
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Looking good!
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"Dont tell me the sky is the limit when there are footprints on the moon..." Anonymous |
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#33
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Just a couple resistors to go!
So I have been putting in so many hours on this project it is a joke. But worth every minute. I can now say I have 99% completed. I just need an elusive 820k resistor and a 9.1k or 8.2k for bias. Oh and a CL70 thermistor.
Discovered I had a pair of GE 7581a tubes in an old Dukane PA amp. Found another NOS with a local friend and traded for it. One more and I am golden. But at least I have enough to test this one. Thanks to Don for the 12BH7s, McShane for the caps, and most of all Mr. Shoaf. I tried my best at wiring it like the original although my next unit was a pretty poor model. Check it out.
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McIntosh MC-30s, Altec 345a, Sansui 500, Fisher 800c, HK Ballad A230, 1 Eico HF-60, 1 Dynaco MkII, HK ST-7, Mission TT and a bunch of other crap. |
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#34
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Nice work Sloober
What wattage you need in the 8.2 and 820 K resistors? If you want I'll check my NOS resistor bins and see if I can find you some Would likely be CC though WOT
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************************************************** "Give any one species too much rope and they'll f**k it up" - Roger Waters |
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#35
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I can fine 'em, but thanks. One question I have is about the voltage input. It ias 2 AC input taps for 117v and 125v. My AC is regularly about 122v. Which should I choose? Is sort of like a built in bucking transformer. John
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McIntosh MC-30s, Altec 345a, Sansui 500, Fisher 800c, HK Ballad A230, 1 Eico HF-60, 1 Dynaco MkII, HK ST-7, Mission TT and a bunch of other crap. |
| Audiokarma |
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#36
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Very nice work John. Use the 125V taps. You'll have a lot less problems in the long run.
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#37
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It sings! The first unit passed testing and is playing "Old and in the way" quite nicely although mono. Bias voltage is -37.4 which is pretty close. I am using 7581a GE outputs. While I did not have any fireworks or smoke, I did miss one ground wire for the first stage. I could hear my cell phone through the speaker but no music. Once I found the missing ground it was all set. 1 down and 1 to go! John
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McIntosh MC-30s, Altec 345a, Sansui 500, Fisher 800c, HK Ballad A230, 1 Eico HF-60, 1 Dynaco MkII, HK ST-7, Mission TT and a bunch of other crap. |
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#38
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Hi mcdan, I've been wondering the same thing. Why use the 125V taps?
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#39
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McIntosh MC-30s, Altec 345a, Sansui 500, Fisher 800c, HK Ballad A230, 1 Eico HF-60, 1 Dynaco MkII, HK ST-7, Mission TT and a bunch of other crap. |
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#40
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Whoa.
Looks new. Oh! It is new. How'd you get those transformer covers to look so nice? Don
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Fisher X-200, 500-C, 400, X-100-3, Lexicon RT-10 and 20, Cambridge Audio Azur 840-C, Thorens TD-320, Spendor BC1s, SP1/5s, KEF 104/2 |
| Audiokarma |
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#41
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Hi Sloober,
Sorry I missed you call but could hear the amp running in the background. Contgratulations on the first amp! I'm sure you're going to learn, now, about why folks like those things so much. Enjoy! Cheers, David |
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#42
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Looking real good, congrats on getting the 1st one done.
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Matsushita. With a name like that, you'd better make good tubes. |
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#43
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Turned out really nice! Great job on a worthy restoration project. Waiting for a review when the other one is finished...
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The Fisher 800-C ~ Pioneer CS-77A ~ Dual 1216 Marantz 2235B ~ EPI-100 ~ JVC QL-A200 The Fisher 500-C, 400 ~ Awaiting Restoration Dahlquist DQ-10 ~ Seeking Soundcraftsmen amp |
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#44
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+1
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Yamaha CR 2020, Sansui 4000, Marantz 2220B, Marantz 4270 Sansui 8080DB, Carver 6200 Pilot 240, Magnavox 8802, Altec Lansing 345A Boston Acoustics A150 Polk 10A Spica TC-60 NHT SuperZeros Wharfedale W70E |
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#45
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Nice job. It looks new.........
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Klipsch Cornwall- Klipsch LaScalas- 6EA7/Allied IT 2A3 SET w/Scholl OPT's-Altec 345A- Rega Planet- |
| Audiokarma |
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