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tube

  1. Tubeglowpio

    Magnavox tube tuner help please

    So I located another switch for my Maggie 7911 tuner chassis. I took some photos and looked at the schematic and have no clue where I screwed up. I have it alligator clipped so that could be part of the issue. I get reception but not as much as expected and the speakers don't have dc but does...
  2. P

    Long Time Lurker - Finally joined up - GA

    I've been collecting or accumulating audio bits for about 15 years now. Started by going to the Salvation Army auctions in Atlanta where I would find old console stereos, tube receivers and lots of speakers that simply needed new surrounds. Like another new member, a new project found me. I had...
  3. K

    New to AK ,bought an old tube amp ,need help

    Need help determining what this amp is,whether mono or stereo,i think its a packard bell.Two output transformers under chassis ,has 4 tubes,i see a 7 pin socket in photos.I havent received the amp yet its codes are rpt-1,dpa-5 ,serial num 10817 and says pb#70759 ,thanks for any replies,ill try...
    • klipschoid
    • Thread
    • magnavox packard bell single ended tube
    • Replies: 99
    • Forum: Tube Audio
  4. B

    Phonograph help

    I just purchased this console a few days ago and I have been looking it over. The phonograph on it needs some help. It turns on and turns which is a good sign. One problem with it though. The needle is gone and I havent a clue on how to replace and or place a new one in it...
  5. T

    Solid state with tube pre amp?

    hello everyone, I'm hoping I can find some insight here. I am selling my Yamaha ca-610 II amplifier and have had a couple of trade offers. First one is a technics SA-5600XC plus cash on his end. The second offer is an audio note m zero tube pre amp. I've never owned anything tubed before but I...
  6. wbgarman

    Fisher Tube Receiver Advice

    I'm new to the forum here and hoping to obtain some advice on vintage Fisher equipment. I currently have a modest setup and am looking to obtain a more rich / warmer tone from my vinyl records. Based on my initial research, it appears that a few brands (Fisher, Sansui, McIntosh, H.H. Scott)...
    • wbgarman
    • Thread
    • fisher integrated amp receiver advice tube
    • Replies: 19
    • Forum: Fisher
  7. Alonso83

    Fisher 500C, Infinity RS4b and Pioneer CS-8B

    Hello everyone, So my dad is all into tubes, like many of you too :biggrin: and his current set up is the following: Fisher 500C, Infinity RS4b and Pioneer CS-8B Can anyone point out to a few amps (preferably vintage stuff, but not necessary) that he could use to drive those Infinity and...
    • Alonso83
    • Thread
    • amplifier cs-8b fisher500c infinity pioneer rs4b test tube
    • Replies: 1
    • Forum: Tube Audio
  8. Olivesaxer

    Complete Noob Tube Question

    Good morning AKers, I have gone through about 10 pages of posts on the Tube section and haven't found the answer to the insanely basic question that I am looking for. Got the tube bug after grabbing up a LD MK3 a few months ago. I am currently using a SX1250 (1978ish) pushing two Monitor...
  9. hobbit

    Boyuu A9 EL34 Chinese singled ended tube amp

    Just bought one of these after messing about with little bear, little dot stuff. It is probably the cheapest of the assembled EL34 single ended pentode (runs in ultralinear but easy to convert to triode mode) Im running mine with standard tubes and it sounds superb No hum, build looks really...
    • hobbit
    • Thread
    • el34 single ended tube valves
    • Replies: 0
    • Forum: Tube Audio
  10. scorron

    Magnavox 8303 SET Tube Amp

    I wanted to share a few photos of the 8303-20 Magnavox tube amp I just finished converting into a stand-alone and thank Audiokarma for some posts that helped me decide to cut out the tone controls ( which freed up a lot of space under the tiny chassis, and made it possible to fit the switch and...
    • scorron
    • Thread
    • 8303-20 magnavox single ended tube
    • Replies: 17
    • Forum: Tube Audio
  11. F

    Help Please, what is this?

    I have a Frazier "micro acoustic tuner" I can't find anything anywhere. someone please shine some light on this for me. what is it. what's it for, any place in the dark recesses of the web hold knowledge about this strange artifact?
    • fretknowmore
    • Thread
    • 400 acoustic amp frazier micro series tube tuner vacuum tube
    • Replies: 7
    • Forum: Tube Audio
  12. E

    What are my 4 RCA BA-21A tube mic preamps worth?

    Hello.. I have a question for the audiokarma world. I'm wondering if anyone can tell me what my 4 RCA BA-21A tube mic preamps are worth. They are very clean and come with a nice power supply BUT they are untested. since they haven't been used in over 15+ years, I'd rather not power them up...
    • Elektric
    • Thread
    • amplifier gear microphone outboard preamplifier studio tube vintage
    • Replies: 10
    • Forum: Dollars and Sense
  13. Tubeglowpio

    Zenith Tube Radio S-58040 Schematic please

    Hi everyone, was wondering if anyone had a schematic for a zenith S-58040, want to fix this baby up nice. I'll post pics when done. Thank you!
  14. Rudefilms

    Anyone feel like recommending a preamp?

    I would love to hear about your favorite preamps! Tube, Solid, Vintage, New, Hifi, etc? I will only be using it with my turntable. I currently have a Denon DP 60L Turntable with a Marantz 1060 that I use as a preamp and 2 Marantz MA500s that power a set of Thiel CS3.6s. Is there any benefit to...
    • Rudefilms
    • Thread
    • amps denon marantz preamp preamps solid state solid state preamp tube tube preamp
    • Replies: 13
    • Forum: Solid State
  15. Tubeglowpio

    Magnavox Tube Console Preamp Needed

    Hi to everyone, been wondering if any of the Magnavox tube console pulls like the set and pp 6bq5 amp benefit from a pre amp? I tried using my Bottle head crack as a preamp and it sounds bad compared to the Magnavox alone, less bass and less of that El84 magic. Is this a problem with impedance...
    • Tubeglowpio
    • Thread
    • console magnavox console stereo magnavox tube tube amp
    • Replies: 57
    • Forum: Tube Audio
  16. lattiboy

    First tube amp purchase... what have I done?

    Hi all, I am going to have a lot of free time over the next few weeks as the Mrs is starting a new job and I have some vacation to burn. In preparing for this, I decided I wanted to check out an old tube amp to possibly rebuild or just toy around with. Rather than researching and educating...
    • lattiboy
    • Thread
    • 50s amp amplifier sterophonic symphonic tube
    • Replies: 20
    • Forum: Tube Audio
  17. lattiboy

    Using an inexpensive tube preamp to drive a proper amp?

    Hi all, Please excuse the utter noobish-ness of this post. I've looked around a lot and come away completely confused. So, I've had to return my Monoprice hybrid tube amp because of a faulty power supply. While I really like the look and sound of my little amp, it seems to me more sensible to...
    • lattiboy
    • Thread
    • amp hybrid monoprice smsl tube
    • Replies: 16
    • Forum: Tube Audio
  18. lattiboy

    Alternative to the Monoprice hybrid tube amp?

    Hi all, I picked up one of the $99 refurbed Monorpice hybrid tube amps a few weeks ago and just love it paired with my Polk RTi6s! Unfortunately, it has developed a buzzing sound and after reading a lot of other reviews I just don't trust the quality control on this guy anymore. I thought...
  19. F

    Amp Build Questions

    Hi everyone, I am hoping that someone here much smarter than I could help me out on a few questions. I am planning on building a clone of a Fisher SA-16 console amp. I have build a few amps from scratch before with the parts needed already known but I am having some doubts on this one. My...
    • Fawkes
    • Thread
    • amp build console diy fisher power transfomer sa-16 tube voltage
    • Replies: 12
    • Forum: Tube Audio
  20. thedudedigs

    Sansui 1000a restoration advice

    I got a fully functional sansui1000a a couple of years ago. It's in great shape, but has never been serviced. Every knob turn is scratchy and although it plays, I don't really want to even plug it in with all those old caps waiting to crap out (it being of the ancient tube sort of gear)...
  21. dstroup

    Help: Zenith Console iPod Hookup Wiring

    DISCLAIMER: I’m a newbie and really don’t know what I’m doing for the most part when working on vintage tube consoles. I recently picked up this 1961/62 Zenith SFF2500 Stereo Console. It appears that a previous owner replaced the previous turntable with a Garrand SL 55B and installed a...
    • dstroup
    • Thread
    • console ipod sff2500 stereo tube wiring zenith
    • Replies: 1
    • Forum: Tube Audio
  22. fishookred

    Siemens Cca tube opinion

    Im looking at bidding on a pair of siemens Cca tubes with an A4 L6 date stamp on them. Are they work going after? I know Cca are supposed to be the best of the best so what do you think? The bid starts at $99 http://m.ebay.com/itm/391547063191
  23. destroyerzx1

    need recommendations for "Best" Stereo amp under $2000

    current system: JBL Apollo C51 Emotiva UMC-200 XIANGSHENG 728A HK citation 22 Borrowed emotiva xpa-2 setup is a bit wonky but it goes from my computer to the umc-200 and from there goes into the 728A down to whatever amp is hooked up. I have been tube rolling with the ( feels kinda silly have...
    • destroyerzx1
    • Thread
    • 2 channel class a recommendations solid state amplifier stereo tube
    • Replies: 37
    • Forum: Solid State
  24. C

    Haven't found or seen one of these before? Odd little Amperex Paperweight / Hourglass?

    Found this little guy at a garage sale a few weeks back. Never seen one before. Bought 5-6 things off the guy for $18. (Two Kodak Retina cameras, two twin lens cameras, a drafting kit, & hot box heater, this little dude?) Never seen anything quite like it. Not gonna lie, most of the stuff I...
  25. dstroup

    Do I Need To Replace These Tubes?

    A couple months ago I purchased a 1962 Magnavox Danish Classic 1-ST621 with a 9300 series amp (9304). I have been slowly learning about vintage tube audio ever since (fun!). I recently decided to clean the tubes / tube pins / tube sockets on this console and noticed some of the tubes don't look...
    • dstroup
    • Thread
    • 1-st621 hot plating magnavox tube
    • Replies: 25
    • Forum: Tube Audio
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