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tube amplifier

  1. H713

    Heathkit AA-121- What happened to this thing?

    Just bought this thing with plans to restore it, and I was hoping for some advice as to how I should proceed. I have not tested this thing yet, as when I got it the selenium rectifier was still in place and the surgistor was burned out. Moreover someone had bypassed the fuse holder (uh oh...)...
    • H713
    • Thread
    • heathkit heathkit aa-121 heathkit aa-40 restoration tube amplifier
    • Replies: 2
    • Forum: DIY
  2. sanjith

    McIntosh MC240- Help needed, new to tube amps.

    Me got a McIntosh MC240 tube amplifier which was sitting idle for last many years. The condition known to me was the power transformer is blown and need replacement. A few months back I gave it to a technician to get it fixed. He replaced the power transformer with newly built one matching...
    • sanjith
    • Thread
    • mcintosh mcintosh tube amplifier mcintosh240 tube amplifier
    • Replies: 3
    • Forum: McIntosh Audio
  3. Tim64

    Tube Sound on a Tight Budget

    This is my low budget system I thought I would share to show you can get pretty good sound for not a lot of cash. Amplifier is the APPJ Miniwatt with JJ and Tungsol tubes puts out 3.5 wpc. The pre can be found under a couple names Nobsound is one of them, mine happens to be a Zhilaiaudio...
  4. A

    AV system to Stereo -- Need suggestion

    Hello, Hope every one is doing well. I got budget to change my AV system into purely Stereo system. Currently I am owning Yamaha RX-V1800 with Canton Speakers 2 X Karat 60 and 2 X GLE 60. I don't want to replace beloved canton speakers, I think they will perform well with stereo. I would...
  5. lattiboy

    Which Chinese tube amp to buy?

    Hello, I'm finally ready to dip my toes into the tube audio world. I'd like to keep it between $200-400. Looking at this one in particular. Does anybody have experience with these? Can anybody recommend a specific one? Is it dumb to order from Amazon instead of alibaba or ebay? thanks!
  6. artsybob

    US Audio Amplifier

    Hello all. I was at a flea market and spotted a stereo tube amp that was manufactured by a "US Audio Corporation" in Bronx, NY. I had never seen this amp before and thought it might have been a kit, but according to radiomuseum.org this was a factory-built unit...
    • artsybob
    • Thread
    • amp stereo tube amplifier united states audio us audio
    • Replies: 12
    • Forum: Tube Audio
  7. P

    Please help me to identify this Pioneer Tube amplifier

    Potato_Head Pioneer by Potato_Head posted Jan 30, 2017 at 8:48 PMPotato_Head Pioneer top by Potato_Head posted Jan 30, 2017 at 8:48 PMS-l1600top Potato_Head by Potato_Head posted Jan 30, 2017 at 8:39 PMS-l1600rear Potato_Head by Potato_Head posted Jan 30, 2017 at 8:39 PMS-l1600open Potato_Head...
  8. lusciousdoug

    Care of Rogue Cronus Magnum

    Considering purchasing a Rogue Audio Cronus Magnum Integrated Amp. This would be my first entry into serious tube world (i do own a Bellari Vp130 and have rolled the tube) and am wondering what type of maintanence and care i should expect. How often will i need to replace tubes? What will be an...
  9. Kasanay

    Looking For Info - 6AU6 Output Tube

    A while back, I was looking for information on building a amp with 6AU6's as the output tubes. A found several examples including a site that featured several dozen different schematics and information - all using the 6AU6 as the Output or Power tube. The problem is - I did not bookmark the site...
    • Kasanay
    • Thread
    • 6au6 6au6a diy tube amp tube amplifier
    • Replies: 4
    • Forum: Tube Audio
  10. dyche01

    Tube amp cooling noises. Should I worry?

    I have had a Fisher 500B receiver for a while and recently acquired a Scott 399. I never noticed the Fisher making any noises after turn-off but, whenever I run the Scott for a couple of hours and then turn it off, it makes sporadic 'tick' noises for several minutes as it cools down. It sounds...
  11. J

    Danelectro Model 272 Series E Centurion repair

    The following videos document the repair of this model of a Danelectro amplifier which has no known schematic available which presented an extra challenge. Video 1 of 3 Video 2 of 3 Video 3 of 3
    • JRUBIN
    • Thread
    • 6v6 6v6gt centurion danelectro repair tube amplifier
    • Replies: 1
    • Forum: Tube Audio
  12. O

    My Sherwood s5000 hums. Help!

    I bought a recapped Sherwood s5000 which hums, most horrendously on the phono stage. Hum is low and acceptable on the monitor input where I plug my ipod in. Problem is I mostly listen to vinyl. My tube-tech friend found that the 4 output tubes weren't rated for the high voltage that this thing...
    • olyrecord
    • Thread
    • hum humming sound phono pre-amp phono preamp phono stage sherwood tube amplifier
    • Replies: 11
    • Forum: Tube Audio
  13. riveraXVX

    found my first tube gear....now where to go?

    greetings everyone! been a while since I've posted on the forums - wife and I just bought our first home together back in December and been busy getting settled in.... I am a complete amateur when it comes to tube audio gear. (I just barely know my way around solid state as it is) I'm...
    • riveraXVX
    • Thread
    • aa-100 aj-41 heathkit tube tube amplifier tuners
    • Replies: 12
    • Forum: Tube Audio
  14. cmarinkovich

    Vintage Speaker Cabinet Build Plans

    I would like to build some cabinets for drivers from the following console stereos. Wards Console model GAI-2754B 12” woofer 789337d: McGregor Horn 78c200-4 73.30: Unkown Manufacturer Tweeter 78c148-23 7899383 McGregor RCA Console model: VMT-50W 1464184-3 2746909 8 BY 10: RCA Horn...
    • cmarinkovich
    • Thread
    • airline cabinet design owners manual rca schematic speaker building tube amplifier vintage speakers wards zenith console
    • Replies: 4
    • Forum: Speakers
  15. S

    Can you identify this tube amplifier?

    12ax7 / 6bq5 (7189?) stereo push-pull tube amplifier / console pull. Seems to have a half-wave solid state rectifier (two diodes). OPTs are labelled 1221 and 9496237. RCA and wired speaker outputs (black/red wires). 6 pin molex on chassis, and 4-pin molex on harness. Auxillary power outlet and...
    • sardox
    • Thread
    • mystery output transformers push pull schematic tube amplifier
    • Replies: 34
    • Forum: Tube Audio
  16. A

    Looking for a Rauland 1835 schematic

    I am working on an old (1948?) Rauland 1835. It is a four input audio amplifier and my life would be a lot easier if I knew how it was wired when it left the factory. THEN I can figure out what some of the other junk in there is. Thanks.
  17. Kasanay

    What Do We Have Here?

    Can anyone guess what all this is about? I'm guessing a power supply on the left (maybe 1 of 2) and either a pair of amps on the right. Tube are (3)7025's and (1) 5879. There is also a 6X5 in the power supply. I think this is a special order setup, possible built by a big-name company (Fisher?)
    • Kasanay
    • Thread
    • mirko paneyko mp engineering tube tube amp tube amplifier
    • Replies: 38
    • Forum: Tube Audio
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