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tubes

  1. J

    Consistently faulty preamp tubes?

    Hello, I have recently purchased a Dynavox TPR-3 pre-amp that uses 6n3 type tubes. However after purchasing now two sets of tubes and being sent a single replacement tube, three of the five tubes tested have been faulty after minor usage. The two cheap Chinese tubes the pre amp came with work...
    • jddonuts
    • Thread
    • 5670 6n3 6n3 compatible help preamp question tubes
    • Replies: 10
    • Forum: Tube Audio
  2. kcline

    CC-AWA Radio Mebane NC Spring Tail Gate Meet FREE to Buy Sell or Trade 5-21-2022.

    Held at Mebane Auction Gallery parking lot, right off of Hiway US-70. Meet starts at 8:00AM, these do not last long over by 12:00 or so. Audio will show up, tubes, radios, Ham Radio and more. I will have free water, snacks, might be too warm for coffee will see. Might have time to set up for an...
  3. MarmotDavid

    Tube Preamp Questions

    These may be silly questions, but here goes.... I have an older Counterpoint SA-1000 hybrid tube preamp, circa 1988-1990 ish. It has a phono section with two 12AX7 tubes and line section with one 6DJ8 tube. I like it a lot and I'm in the process of upgrading tubes. First question -When I am...
  4. kcline

    Tubes Notes from The Last Tube Collectors Association Magazine Dec 2019

    This information is from AWA holdings of Dowd-RCA Archive published in the last issue of the TCA Dec 2019. RCA Tube "Salvage Schedules" 2A3, Low plate current shrinkage may be salvaged by tapping with hard felt hammer, Tap tube on dome in a plane parallel to the top mica while the AC test...
  5. adnick

    SUT Camouflage!!!

    When using old tubes equipment and vintage turntables, some of the more modern equipment like CD players and step up transformers (SUTs) can look out of place. To help them blend in I’ve employed a bit of cover and concealment ;) (see photos), that’s a CD player on bottom… One unintended...
    • adnick
    • Thread
    • cartridge denon fisher sut tubes turntable
    • Replies: 25
    • Forum: Turntables
  6. kcline

    CC-AWA Charlotte 3 Day Radio Phonograph Big Meet 3-24 thru 3-26-2022

    Go to our website cc-awa.club. First meet we have had since 2019. There be many audio items at this meet, I have bought many audio items and tubes, at this meet. Indoor tables are available this year with the normal outside tailgate spaces. If you cannot come Thursday or Friday Saturday is FREE...
  7. J

    Help reading Amplitrex Tube Testing Data

    Hello all, I've found some of my dream tubes, very hard to find but I have no idea how to read the tube testing data. Can someone help me with this to see if they are matched and good tubes? I know one will "burn out" before the other, but Im not worried about that, I just want to make sure...
  8. kcline

    CC-AWA Winter Outdoor Meet Mebane NC NEW DATE Now 2-5-2022 8:00AM until ?

    At Mebane Antique Auction Gallery on US-70 East of downtown Mebane NC. Show is outdoors we can go inside for coffee and snacks and to use restrooms. Audio does and will show up, these are early AM shows, they are done around 11:00AM. Snow date in the next weekend.
  9. kcline

    Current Analog Room Setup 45 SET with Arcturus Blue Glass 37-A Tubes

    When I got this amp it came with a 5 pin to octal adapter so a # 76 tube could be used in place of 6J5, I thought at the time that I wish I had some blue Arcturus 76 tubes, those are very hard to find. I have a collection of blue tubes and I remembered that there was a 76 like tube the 37-A...
    • kcline
    • Thread
    • arc dynaco heathkit klisch tubes
    • Replies: 8
    • Forum: Tube Audio
  10. kcline

    Tube related items picked up yesterday.

    Dynaco SCA 35, WE CardMatic Tube Tester with man and calibration cell and cards, also but not shown Zenith Leather TO with the 1L6, hope its good. All but the WE tube tester have various issues but have notes with each what the problems are.
    • kcline
    • Thread
    • dynaco tube testers tubes western electric
    • Replies: 13
    • Forum: Tube Audio
  11. C

    Magnavox 9302 - Rebuild

    I recently acquired a Magnavox 9302, and I'm in the process of rebuilding it. I've stripped the chassis completely, and I'm nearly done doing the mechanical work on the chassis... soldered over the extra holes, body filler, all the aesthetic stuff. I'm having some trouble with the schematic...
    • Cameron06
    • Thread
    • 12ax7 93-series 9302 amplifier edcor el84 magnavox tubes ultra-linear
    • Replies: 64
    • Forum: Tube Audio
  12. IEHAGY

    Dead preamp tube or something worse ?

    It started with louder than normal noise floor / hiss that I was able to control by adding a passive preamp into my chain ... then it started taking longer than normal for it to heat up .... and now it wont heat up at all. I'm wondering if its time to take my beloved Juicy Music Extreme to a...
    • IEHAGY
    • Thread
    • 12ax7 juicy music tubes
    • Replies: 9
    • Forum: Tube Audio
  13. BrianC7927

    Scott 130 Preamp Sound Issues - Are Ceracaps to Blame?

    Over the past two years I have had intermittent sounds issues on my Scott 130 preamp that have become so frequent now the unit is un-listenable. Following is a description of the issues, feedback from another AK member, and pics of the unit. At this point I want to diagnose the issue, then...
  14. kcline

    Aiyima Tube -T3 Phono Pre-Amp

    I had this for around 30 days or so. This popped up on Amazon at 10% off plus I had another discount I applied to it. It delivered to me for under $50.00!!. Unlike the Little Bear phono pre,s I had in the past this worked right out of the box with no hum. I placed this in my Analog Room #1...
  15. S

    Just inherited Magnavox Belvedere

    Hi, I just inherited this beast, it's got tubes in the back and dust from when the tubes were new too. Turntable and radio, with a note on the back that the console fits a 20" tube tv. The label on the front says Magnavox Belvedere, but I'm not finding any serial number on the unit. Any idea of...
  16. kcline

    Radio Audio Ham Radio Meet 6-5-2021 at Mebane Antique Auction Gallery Parking Lot.

    Time 8:00am till when ever. All outside only, will have use of indoor bathrooms, I will bring 3 or 4 cases of water and some snacks, This is FREE for all to buy sell or trade. The CC-AWA radio club of which I am on the board are the sponsors of this show. MAAG is on Hiway 70 east of Mebane NC in...
  17. Eternalvoid

    Building My First Tube Amplifier

    Recently my old Marantz 2220B died, although it was not the world's highest quality or most impressive receiver. I enjoyed it greatly and was very pleased with it. I am a student currently studying electrical engineering technology and was able to obtain said receiver in nonworking condition. I...
  18. L

    Pretty basic system

    In our living/dining room for watching TV, occasional movies and CDs, also classical and Christian FM radio. Just 3 components: NAD 7225PE - 25wpc slim receiver (from late '80s, 2nd owner) Yamaha BD-S677- BluRay/SACD/CD player (5 yrs old) Klipsch Forte I - floorstanding speakers (late '80s...
    • lightcapture
    • Thread
    • bluray horns klipsch mystere rotel schiit audio thorens tubes turntable yamaha
    • Replies: 4
    • Forum: Members' Systems
  19. phishterr

    New to tubes, looking for recommendations

    So I recently added tubes to my system for the first time and I’m pretty sure I wasted the first 32 years of my life with solid state. It’d always been a vintage amp guy and owned pioneer, marantz, technics and more marantz. This Dynaco st-35 makes them all look like a joke. I’ll never go...
  20. R

    Thoughts on restoring a Dynaco ST70

    Hi everyone, I recently came in possession of an ST70 factory wired, all original components. Other than a hum in one of the channels that I traced to the 7199 tube on one side, it's fully functional. I'm very comfortable around electronics but I am relatively new to tubes. I want to ask you...
    • radu_c
    • Thread
    • 7199 dynaco gz34 restoration st70 tubes
    • Replies: 62
    • Forum: Tube Audio
  21. James Cox

    Scott 340b powerswitch

    Hi, i have a scott 340b that needs the power switch replaced. I found a switchcraft spdt switch but wanted to double check that it would work for my needs. Its rated at 125v but that seems low for a powerswitch. Will this work? If not what ratings should i be looking for on the switch? Also...
    • James Cox
    • Thread
    • 340b powerswitch restoration scott switchcraft tubes
    • Replies: 10
    • Forum: Tube Audio
  22. J

    How to bias valves on a Dynavox VR-70E II

    Hi, I have one of these being delivered today, and intend to do some tube rolling. Does anyone here know how to bias new valves on this amp? I can't see anything on photos of the amp, or anybody on any forum saying how they have done it. Thanks, John
  23. James Cox

    Help with scott 299c Case Hardware

    Hi, i have a scott 299c that im getting a wooden case made for. The problem is it won't be coming with the screws or hardware to attach it to my amp. My amp has the rubber feet on the bottom, if that makes a difference. Does anyone know what size the screws are and if there is any additional...
  24. kcline

    Testing used up looking Tung-Sol 6550 Type one

    See pictures; This was in my Dynaco Mk-3 Paoli mod amps. I was testing today using my Maxi-Matcher. This tube had been in amp for 4 years, I would guess around 1000 hrs and this was used already. A few weeks ago I retubed with GE 6550 and today I decided to retest the worst looking of the four...
  25. kcline

    Changes in local AC Voltage since Virus Stay at Home Orders

    When I use my Analog Room #1 System the normal amp is my pair of Heathkit Williamson W-3AM monoblocks.These are from 1954 and I run those with my Jorgensen Line Voltage Corrector. It can Buck or Boost + or - 12 volts or + or - 24 volts adjustable with the control. I run these at 115 to 117...
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