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300b

  1. M

    6SL7/6BL7 driven Electra-Print 300B

    I have a thread on another forum about this project, but I might be missing some folks that hang out here. I'm looking for last minute feedback from folks smarter than me (plenty of you out there). I found an Electra-Print 300B schematic that caught my eye a while back and I was ready to take...
  2. Yesterday

    New Komuro 300b dc coupled amp build thread

    Planning to do a build of this amp and post pics. But here and there also pics of my failures. Often people (including me) just show the end result. I already did the chassis wooden frame a year ago or so. Needed a power transformer which I took from an old amp. It was already painted in my...
  3. Carbsandcaps

    My $430 300b tube amp.

    About a year ago I was surfing eBay and came across this diy 300b amplifier board and figured why not find out what these tubes are all about? So I ordered in for $70. It’s just the board, no power supply, no tubes, no output transformers ect. Then I started to collect the parts. I went over...
  4. alanbrain

    Help with ground in a SET amplifier from Japan

    Hi, I am not sure this is the best place to ask for your help with a couple of questions. So, please let me know if I should post this in a different sub forum. It is about how ground is managed in Japan, because I have a SET amplifier from Japan. I bought a 100V DIY Japanese dual mono SET...
    • alanbrain
    • Thread
    • 2a3 300b dual mono japanese tube amplifier set
    • Replies: 28
    • Forum: Tube Audio
  5. F

    Help hooking up replacment transformer

    Hey gang. I usually stick to working on turntables, but I got a great deal on a set of Arte Forma 300B monoblocks. One has a bad power transformer, but I decided to take these on as a project and try to learn something so have a newbie question. The original power transformer has secondaries...
  6. jeeem

    Matching tubes to amps

    Although I have several "valve" amps, I'm only beginning to discover TubeWorld. I don't even know what tubes are inside some of my vintage equipment because I've never looked and wouldn't understand the significance of what I find. Now, with a fair amount of time on my hands, I want to learn...
    • jeeem
    • Thread
    • 12ax7 300b el34 kt88
    • Replies: 10
    • Forum: Tube Audio
  7. jaaronb

    Golden Tube Audio - early 300b mono issue - any experience?

    Hey folks - I know this is a longshot... I’m in possession of a pair of what appear to be early production Golden Tube Audio 300b monoblocks. Does anyone have any experience with these? Here’s the issue: one of them has been repaired/modded, and the other hasn’t. A new choke has been added...
  8. J

    Recommendation on an integrated tube amp for Altec Lansing Model 14.

    I got an Altec Model 14 speakers and currently using solid state equipment at this moment. I'd like to use an integrated tube amp that will best match model 14 and provide a more holographic stereo imaging and sweet soundstage. Let me know your recommendation and what was you're experience...
    • jervz
    • Thread
    • 300b altec lansing altec lansing model 14 holographic stereo imaging soundstage tube amp
    • Replies: 27
    • Forum: The Lansing Legacy
  9. F

    Recommendations for new power transformer

    Hey there gang. I recently picked up a pair of Arte Forma 300B monoblocks and one has a shorted power transformer. The tranny is 760V (380-0-380) at 300mA center tapped, 6.3V center tap (3.15-0-3.15) at 3A and two 5V @ 4A (see photos). I'm having trouble finding an exact match. A friend...
    • fmjunkie
    • Thread
    • 300b arte forma power transformer
    • Replies: 8
    • Forum: Tube Audio
  10. BirdOnAWire

    My tubes are bigger than yours

    These tubes are big! Are there bigger that you can buy new? I'd like to see old ones too. Significance of size - you tell me. I just wanted a break from that other thing, so thought you could show me your [big] tubes.
    • BirdOnAWire
    • Thread
    • 300b emission labs eml 300b-xls gold lion
    • Replies: 86
    • Forum: Tube Audio
  11. allhartfidelity

    Gordon Rankin 300B pair Cardinal X-2 Journey

    Just a neat experience thought I would share, as it seems no one in my immediate proximity (family) cares about my tube addiction....;) Had been wanting to try a 300B style amp for some time, on my Belle Klipsch. I've had all sorts of vintage amps over the years, but wanted lastly the 300b. A...
  12. BirdOnAWire

    Rolling with my Tubes and EMI

    I'm going to be taking my Tube amp for a roll. I got my 300B SET amp (Cary CAD-300SEI) in Dec - it hummed about 3dB. I took the driver tubes out, disconnected all speakers, moved it to different locations and even a friend's house. And with headphone - it still hums. Cary replaced it...
  13. I

    JJ or Gold Lion 300B recommendation

    Hi all, I have decided to try out a SET amp and have an Elekit TU-8600 kit on its way. I need 300B tubes, and narrowed down my selection to JJ and Gold Lion. I am only interested in new tubes. The Gold Lion's get really good reviews but so do the JJ. Does anyone here have hands on experience...
  14. UncleBingo

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

    No Affiliation.
  15. grantray

    Any Fi X3 300B amp owners out there?

    I just became the proud steward of Don Garber's chassis number X3-08, which I'm over the moon about, but I don't have the accompanying papers, which generally include a schematic and parts list. Chassis 08 has the Elna Cerafine power cap with Hammond 125E output trannies. I'd love to get...
  16. Tubeglowpio

    Set with full range vs two way with horn

    Hoping everyone can help me out with this one, so I'm trying to decide on a speaker to build for a 2A3 or 300b tube amp. I haven't decided on which set to build yet because the full range is a 90 db and the mid bass with horn driver would be 99db. I'm just trying to see if anyone prefers horn...
    • Tubeglowpio
    • Thread
    • 2a3 300b advice needed amp full range speakers tube
    • Replies: 5
    • Forum: Tube Audio
  17. Dr. Humboldt

    300B tubes running cold

    I'm a very happy owner of a used Dared SET 300B pair of 'quasi-monoblocks'. But neither of the 300B tubes get hot or glow red. And I mean they are room temperature to touch -- I had them on for about ten hours yesterday, checked them in complete darkness -- no glow or heat. I haven't opened...
  18. guiller

    Mastersound 300B S.E. integrated amplifier

    Are there any AKers who own or have heard this integrated amp? http://www.stereophile.com/integratedamps/208mast/#xAZqHdiuYzY35jmL.97
  19. 300B 10Y SE amp with 83 rectifier tube

    300B 10Y SE amp with 83 rectifier tube

    300B 10Y SE amp with 83 rectifier tube
    • radiostar
    • Media item
    • 10y 300b 83 amp rectifier se tube with
    • Comments: 0
    • Category: DIY
  20. I'm the proud owner of an SET power amp!

    I'm the proud owner of an SET power amp!

    I'm a new owner of an 8 watt per channel BEZ Model T3B class-A, zero negative feedback, 300B SET power amplifier...another fine example of DIY home-built 300B topology by Edmund Lam. Tubes consist of new graphite Shuguang 300BCs, NOS '40s Delco (RCA) 6J7GT drivers, and a 1951 Sylvania 5U4G...
    • jt1stcav
    • Media item
    • 300b bez class-a t3b
    • Comments: 0
    • Category: Member's Tube Gear
  21. Tj 300B mesh plate

    Tj 300B mesh plate

    A pic of my Tj 300B mesh plate tube. This is a great sounding 300B.
    • gonefishin
    • Media item
    • 300b mesh tj tube
    • Comments: 3
    • Category: Tube Gallery
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