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tubes

  1. kcline

    Invitation only Yard, Tag sale and or Make best offer Tubes and more

    This past Saturday would of been the Raleigh Ham Fest show. The club was trying to help the widow of a member get rid of all the "stuff". All meets of course were cancelled and the Widow was having cash problems, so they had this invitation only Yard Sale. There was a total of 6 people there of...
  2. N

    Using short plate and long plate tubes together...

    Hi All, Does anyone have any experience using both short and long plate tubes in the same amp? I have a 1959 Pilot 245-A integrated amp, and I just purchased a lot of 7 RCA 12AX7 tubes. The tubes tested NOS apparently, and four of them are long plate, and three short. My amp uses six preamp...
    • njm
    • Thread
    • 12ax7 pilot 245-a preamp tubes
    • Replies: 9
    • Forum: Tube Audio
  3. LinnK

    Power amp for my Sansui AU-555a

    Hello, I have a fully recaped Sansui AU-555a in almost pristine condition. I 've read here and there that it had a very good preamp stage, and that it sounds like a tube amp. Unfortunately I have no experience with tube amps, but they have been attracting me for a while and I wonder if it...
  4. Zack Sainz

    FX-AUDIO- TUBE-01J

    Hello all! I am curious if anyone has experience with this buffer/preamp? Specifically the Japanese edition with the gain switch? From what I have read, the tubes should be swapped for the GE JAN 5654W. And since this is the Japanese edition, what kind of power supply should be used in the...
    • Zack Sainz
    • Thread
    • fx audio tube-01 power supply preamp tubes
    • Replies: 9
    • Forum: Tube Audio
  5. kcline

    Winter CC-AWA Radio Indoor Meet Mebane NC 1-25-2020 8:00AM

    Held ever year at Mebane Auction Gallery. Doors open at 8:00AM meet will mostly be over by 11:00. Free to buy sell or trade lots of tables to setup on. Free coffee and doughnuts while they last. If snow is in forecast for Friday or Sat, snow date will be 2-1-2020 if needed This a radio meet but...
  6. Strgazr1967

    Welborne Labs ST70 bias, caps and tube questions

    I picked up this ST-70 a few weeks ago and have been cleaning it, going over it and deciding on tube choice for when I set it up after Christmas. The wife's decorations require I take my system out for the holidays. I have a few questions. While going over the amp I noticed that whoever did the...
    • Strgazr1967
    • Thread
    • bias adjustement capacitors dynaco gold lion st-70 tube amp bias issues tubes
    • Replies: 1
    • Forum: Tube Audio
  7. kcline

    New to me pair Bozak B-300 now B-302 Urban with issue

    I am the 2nd owner of these, they came from an estate in Burlington NC. Issue is one speaker is wired the opposite of the other, since it is a possible user error I very carefully checked all speaker and amp a Fisher KX-200 connections all were correct, today I made a new shorter set of speaker...
    • kcline
    • Thread
    • bozak fisher tubes vintage
    • Replies: 40
    • Forum: Speakers
  8. Matt The Cat

    MA2275 Phono Stage Interference Help - Stumped!

    Hi, I'm stumped and I really could use some advice on how to fix possible RF, EMF or grounding issues on the phono stage of my MA2275. It was just in the shop for 2 blown transistors controlling the bias of one of the KT88s. That issue was fixed, but as soon as I hooked it up, I noticed a...
    • Matt The Cat
    • Thread
    • distortion grounding buzzing sound interference ma2275 phono stage tubes
    • Replies: 49
    • Forum: McIntosh Audio
  9. TubieNewbie

    Conrad-Johnson MV55 Triode Mod

    I was reading the manual for my MV55 amplifier and it mentioned that my amp can be modified for triode operation. The following is an excerpt from the manual: Optionally, the MV55 may be reconnected internally for triode operation of the output stage, for exceptionally musical performance, but...
    • TubieNewbie
    • Thread
    • conrad-johnson modification mv55 triode tubes
    • Replies: 2
    • Forum: Tube Audio
  10. kcline

    CC-AWA Jamestown NC Tail Gate Meet 11-2-2019

    At City Lake Park Jamestown NC Gate opens around 7:00AM meet over around 11:00AM there be some audio and tubes and radio and ham and more, at this meet not a big meet but the weather looks good. PM me if you need more info.
  11. AlexHempel

    Compiling a list of tube amp kits

    I'm interested in building a tube amp kit but finding good information is quite a slog, since mentions of the various kits are scattered across many threads, and there's no way of knowing when you've discovered all the kits that are out there. I strongly prefer to compare every possible option...
  12. kcline

    Early Version Fisher 400-C Preamp Owners Manual

    I have a Manual for the 400-C that is for the version that has dual-tone controls and shows the "Output Selector" as stereo reverse, stereo standard, channel a+b, channel b+a, channel a, channel b. Mine has single tone controls, then the output selector goes the same on the first two then...
    • kcline
    • Thread
    • fisher preamp tubes
    • Replies: 3
    • Forum: Fisher
  13. Tubeglowpio

    Magnavox 8601 back on bench questions

    Hey guys, so the Maggie 8601 was the first tube amp I ever rebuilt with only the original iron and all new parts. This was about 3 or 4 years ago now and I quickly moved to building other audio gear but I always felt that the Magnavox should have sounded a little bit better, I did modify the...
    • Tubeglowpio
    • Thread
    • 6bq5 8601 amplifier diy el85 magnavox stereo tubes
    • Replies: 13
    • Forum: Tube Audio
  14. kcline

    New to me Klipsch Cornwall Speakers

    I owned of pair of these back in 1980 in Birch sold them around 1985, I have always wanted another pair and here they are. I was glad to find out that my Fisher 400-C pre. and SA-100 amp are quiet, never had a horn system connected up to these.
  15. MotherSauce1

    Small Footprint Low Watt System

    Howdy, I've always liked the sound of efficient speakers and low watt tube amps. A few years back I sold my long-enjoyed pair of Klipsch Heresy (haters please refrain from posting). I admit, I miss the system but parted with it mostly due to size. I live in the city, in an apartment. I've been...
  16. UncleBingo

    This is kind of cool. Glassworks at the new WE plant

    No Affiliation.
  17. HiMcDunnough

    grounding issue with "Pro-ject tube box se ii" phono stage

    hi all Here's the setup that I'm having problems with Pro-ject phono stage (12ax7a) Lector ZOE preamp (no phono stage), (Telefunken 12au7 tubes) Adcom GSA-555. - I've been using a Cambridge 651p (budget ss phono stage) with zero problems. - the pro-ject works as it should for five minutes...
    • HiMcDunnough
    • Thread
    • lector zoe grounding issue tube matching pairing. tubes
    • Replies: 7
    • Forum: Tube Audio
  18. kcline

    New to me another Fisher 500-B Ser. number 12154-C

    This came from work, auction house two weeks ago. From a antique radio estate I told the family you would have wished Jim collected audio instead of radios when this sells. Seems to have all fisher tubes the fisher marked 7591-A tested good on my matcher. Has a pair of Made in Holland 12AX7...
    • kcline
    • Thread
    • fisher tubes
    • Replies: 1
    • Forum: Fisher
  19. kcline

    Using Fisher 500-C Bi-Wired Driving Infinity Kappa 7.1 speakers

    These speakers like more power then the 500-C has, however connected bi-wired sound great played Kate Wolf what a great voice then played Bauhaus bela lugosi dead had to turn it up about 3/4,s but had good bass and played it well. I like this setup so much I may make a better set of cables and...
    • kcline
    • Thread
    • fisher infinity tubes
    • Replies: 13
    • Forum: Fisher
  20. Squidward

    Kegger Schematics Mega Thread

    I'm going to start this thread with a specific aim: To preserve the knowledge that Kegger freely gave our community. This thread is for posting schematics that Kegger created. He designed some very popular amps (KT-88 SEUL, for one), but he also has some lesser known designs that shouldn't...
    • Squidward
    • Thread
    • amplifier diy el-84 kegger kt-88 push pull schematic seul single ended tube amp tubes
    • Replies: 51
    • Forum: Tube Audio
  21. thorpej

    A message from The Electron Tube Information Council

    Just leaving this here for your enjoyment. http://www.rcaselectron.com/TNT.html (Oh how I would love to find an original copy of this.)
  22. Matt The Cat

    Tube Issue on MA2275

    Hi all, I noticed the other night as I was going to turn my MA2275 integrated tube amp off that the tube cage was WAAAAY too hot. I determined that the front, left KT88 was extremely hotter than the other 3 KT88s and also smelled bad. I immediately shut the amp off. Next day, I turned it on...
  23. kcline

    Tube oddies from the Dowd-RCA Archive AWA Museum from the TCA

    I am a member of the Tube Collectors Association. I am also a member of the board. Our President Ludwell Sibley had these archives in his possession for many years for study, as I have time I will post some audio related items. First up is the RCA list of Private Brands that RCA marked on tubes...
  24. kcline

    United Electronic Co. JAN CUE 845 VT-43 Tubes

    I was helping out an old friends estate for the family, he was a big radio, test eq. and ham radio collector. His tube collection was almost all radio tubes, but in the bottom of box were these. First 845,s I have found in about 20 years Nice to see these and they have good filaments I cannot...
  25. kcline

    New Preamp for Main Systems

    Just in last weekend PrimaLuna DiaLogue Premium Pre-amp, replacing in this room my ARC SP-9 MK-2 and Jolida Pre. Much better sound then either pre Deeper and wider soundstage with more detail. Still need to connect to Polk Audio SRS speaker thru the Harry Gates Mem. amp, but have to move the...
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