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el84

  1. oldmustang

    MC225: EL84 with adapter instead of 7591?

    I was looking at what is available in the way of 7591s for my MC225 at Tube Depot today and they had this listing: https://www.tubedepot.com/products/yj7591-el84-to-7591-adapter I'm not dissatisfied with the new manufacture Tung Sol 7591s I'm currently running, and I have a set of NOS with...
  2. A

    Thoughts on lesser-known European brands? (Vieta, specifically)

    I've been wanting a Scott amp for quite a while now, but in my market even the few really rough unrestored ones are going for 1000€ and more. So I've been playing the waiting game. I can't help but notice, though, that other amps are cheap and plentiful - there are a couple of clean and complete...
  3. Nac458

    ASUSA K2003 - Antique Sound USA Schematic request

    Hello all! I’m looking for a copy of the schematic for a small SET tube amp, model K2003, made by Antique Sound USA. These were built circa 2001 Thanks!
    • Nac458
    • Thread
    • 6bq5 el84 el84 triode set single ended tube amp
    • Replies: 8
    • Forum: Tube Audio
  4. david winter

    Olson stereo amps & docs ?

    Hi, It looks like there's little technical information about Olson tube amplifiers. I'm trying to go through an unidentified model equiped with a 5AR4 rectifyer, four EL84 PP and 5 12AX7 (all testing good). There's some residual audible ripple after recaping the power supply whatever the...
  5. jpatti75

    I need a tube lesson

    Hi gang, I need a lesson on new vacuum tubes on the market. While there are many review of modern tubes on the net, many of the reviewers represent the guitar amp crowd, while limited reviews that I have found reference modern tubes for use in vintage HiFi stereo applications. Quite a few...
  6. zastin17

    Schematic For Magnavox 8302, EL84 Single Ended, "Refreshed Factory Drawing"

    I am making a habit of restoring really old poorly scanned schematics from factory units. And archiving them in Audiokarma for people doing "Google Searches" I take old nasty schematics, and clean them up in Gimp to be as clear, and precisely drawn as possible. Repairing "Pixel by pixel" This...
    • zastin17
    • Thread
    • 8000 8302 86xx console amps converted el84 magnavox single ended tube
    • Replies: 5
    • Forum: Tube Audio
  7. 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
  8. MKG

    El84 amp help needed

    I’ve been working on getting a Dumont Emerson 719/720 el84 based amp up and running as a stand-alone. I’ve recapped it and based on previous threads on this model, replaced r82 with a 120 ohm 5w resistor. New power tubes, nos tested 5y3 rectifier tube (previous threads on this amp have...
    • MKG
    • Thread
    • 719/720 dumont el84 emerson
    • Replies: 19
    • Forum: DIY
  9. artsybob

    "Andrea" EL84 Stereo Console Restoration

    A little while back I posted about a pretty rare EL84-powered stereo console I had found, made by the Andrea Radio Company of New York (a successor company to FADA, a radio manufacturer from the 1920's and '30s). The electronics inside looked great, but the cabinet desperately needed...
    • artsybob
    • Thread
    • 6bq5 andrea radio company andrea tube console cpr-a2s el84 restoration project
    • Replies: 18
    • Forum: Tube Audio
  10. artsybob

    1961 Andrea Console

    I wanted to post up some pictures of my next restoration project, a 1961 stereo console built by Andrea Radio Co., a more obscure brand that was more known for their high-end TV sets. The tube complement in the amp is a 5U4GB rectifier, four EL84 power tubes, and two 7199 preamp tubes. Not only...
    • artsybob
    • Thread
    • 1961 andrea andrea tube console cpr-a2s el84
    • Replies: 18
    • Forum: Tube Audio
  11. Jeremy64

    My current setup - complete newbie

    Marantz 2245 receiver Marantz 5020 cassette deck SAE 2500 amp Teac 4010 GSL reel to reel Technics SL-1700 Just added Pilot 254 receiver Speaker sets Ohm F’s (currently being restored) Ohm 3xO Jensen Model 4 Btw all of the above were found on Craigslist or garage sales and I learned to love Deoxit
    • Jeremy64
    • Thread
    • 2245 el84 jolida marantz ohm 3xo ohm f-series ohm speakers pilot254 sae 2500 tube amp
    • Replies: 39
    • Forum: Members' Systems
  12. Tubeglowpio

    Rh84 built, first impressions

    So I got around to finishing the rh84 build, it was built as the circuit describes besides some power supply tweaks and plate voltage ended up around 276 volts. Cathode current ended up being around 34 ma so only dissipating about a little over 9 watts. I also added a 100k pot on the input and...
  13. Tubeglowpio

    Dgse1 ultra linear

    Hey everyone, I've built a couple tube amps in the past but finally ended up pulling the trigger on building a dgse1 since I've heard mostly good things and love the sound of the maggie 8601 I suped up. I changed a few things from the schematic but mostly just the power supply to adjust the...
    • Tubeglowpio
    • Thread
    • dgse1 el84 maggie magnavox tube tube amp tube stereo ultra linear
    • Replies: 8
    • Forum: Tube Audio
  14. artsybob

    Next Project: Andrea CPR-A2S Console

    Now that I'm done restoring my Realistic SAF-40D integrated amp I've been looking for a new project to work on. I think I'll start working on my uncle's circa-1961 Andrea CPR-A2S stereo console. I couldn't get many decent interior shots, but it looks like it has a pretty sweet amplifier with...
    • artsybob
    • Thread
    • 1961 7199 andrea radio company andrea tube console console stereo el84 tube amp
    • Replies: 8
    • Forum: Tube Audio
  15. jdsalinger

    Pilot 602 power amp scratch build

    I recently acquired a Pilot 602 that is a bit beyond refurbishing. I love the sound of my 402 & I wondered what it would sound like with fresh everything, minimal components and NO tone controls. Since they are similar amps, I'm considering doing a scratch build as a power amp using these...
    • jdsalinger
    • Thread
    • 6bq5 el84 pilot 402
    • Replies: 3
    • Forum: DIY
  16. thorpej

    Heathkit AA-151 restoration in-progress

    [Post was stuck in limbo during the outage...] I'm whipping the Heathkit AA-151 that I picked up a while ago back into shape. I finished the cap job last week had some time last night to fire it up and give it a quick listen / performance evaluation. What's been done so far: Tubes all...
    • thorpej
    • Thread
    • aa-151 el84 heathkit ultra-linear
    • Replies: 30
    • Forum: Tube Audio
  17. Pilot 245A faceplate - before

    Pilot 245A faceplate - before

    Faceplate from my Pilot 245-A integrated amplifier as it was found in a console. Look for the "after" picture to see it resurrected.
    • Redboy
    • Media item
    • 245-a 245a 6bq5 amp el84 integrated pilot
    • Comments: 0
    • Category: Member's Tube Gear
  18. Pilot 245A integrated amp - before

    Pilot 245A integrated amp - before

    This is my Pilot 245-A integrated amp just after I pulled it from it's console. Push-pull amplifier with 6BQ5/EL84 output tubes, about 20 watts per channel. This amp has the same output transformers as the venerable Pilot 232 amp. Note the faceplate in the background, and see the...
    • Redboy
    • Media item
    • 245-a 245a 6bq5 amp el84 integrated pilot
    • Comments: 0
    • Category: Member's Tube Gear
  19. Pilot 245A faceplate - after

    Pilot 245A faceplate - after

    This is my Pilot 245A integrated tube amp - all cleaned up. Lots of elbow grease, Brasso, Nevr-Dull (magic stuff!). The amp was recapped with Orange Drops and Sprague Atoms throughout. It's a push-pull 6BQ5 with about 20watts output per channel.
    • Redboy
    • Media item
    • 245-a 245a 6bq5 el84 integrated pilot
    • Comments: 1
    • Category: Member's Tube Gear
  20. Sansui Model 500A

    Sansui Model 500A

    44pounds of sound... my first, my last, my... got it 1976 for 60$ in a garagesale, sold 3 times, came back 3 times. bit modded now.
    • Dynacophil
    • Media item
    • el84 sansui tube
    • Comments: 0
    • Category: Sansui Gallery
  21. A vintage Magnavox

    A vintage Magnavox

    For awhile I used my brother's 1962 Magnavox 6QB5/EL84-based dual SE class-A console (#1ST228K) stereo power amp. It's non-ultra linear at approximately 2 to 5 watts per channel, using a pair of new matched Ei Elite EL84EG goldpin output tubes, a single 2003 Electro Harmonix 12AX7EH driver, and...
    • jt1stcav
    • Media item
    • 6qb5 amp console el84 magnavox sep
    • Comments: 0
    • Category: Member's Tube Gear
  22. Kailin EL84 tube amp

    Kailin EL84 tube amp

    Here is Kailin's EL84 tube amp. Makes some nice music on my desk.
    • yrly
    • Media item
    • amp el84 kailin tube
    • Comments: 0
    • Category: Member's Tube Gear
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