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tube amp

  1. A

    Decca Allegheny IV

    Hello, I have a 1959/1960 Decca Allegheny IV that I am trying to find a legible schematic for. There is one glued to the inside that I cannot remove without ripping, and even if I did, the print is so small that I cannot read it. I have checked Sam’s photofact and it seems to skip over this...
  2. NTShadowPT

    New Willsenton R8 - What Tubes to choose when purchasing?

    Hi, I am strongly considering purchasing a Willsenton R8, but as a newbie to the Tube Amps world I am overwhelmed by the choices available for both Power or Pre-Amp Tubes. This is the Power Tube Selection: And this is the Pre-Amp Tube Selection: The differences in price are not...
    • NTShadowPT
    • Thread
    • tube amp valves willsenton willsenton r8
    • Replies: 31
    • Forum: Tube Audio
  3. P

    Motorola SK32W - Where to begin?

    Hello All - recently acquired this cool stereo from a neighbor… it’s in relatively good shape for its age, but noticed a couple of tubes are cloudy and expect it needs some caps replaced and the electronics looked at. I am fairly handy but tube electronics are completely new to me. Hoping you...
  4. GrandDesigns

    Bogen AP-60 found in the dust

    I found a Bogen AP-60 integrated amplifer that's been in storage for a while. It's filthy and I've been cleaning off the accumulated dust and grit. I have not attempted to plug it in or turn it on. I saw this post about another AP-60 and what steps to take to see if it had any life, and it...
  5. GainFactor99

    Impedance matching for Schit Modi DAC to Dynaco SCA 35

    Does anyone know if the 75 Ohm output impedance of the Schit Modi DAC will play nicely with a Dynaco SCA 35 integrated amp? I've not been able to determine what the Dynaco is looking for, but I've read a few posts about mismatched SS preamps with tube power amps that makes me wonder. Thanks.
  6. S

    Is this Dynaco ST 70 FUBAR?

    Found this guy on CL for a decent price compared to what people are asking for these Dynaco units around me lately. However is this unit FUBAR? A lost cause? I have worked on some tube equipment but I have never removed a mod and reverted a unit back to stock. It appears they have removed the...
  7. Refugee

    Reverb or multi effect module to add to a vintage amplifier for acoustic guitar - suggestions?

    I have a vintage tube hifi integrated mono amp that I have adapted to use with an acoustic guitar. I have it hooked up to an old realistic speaker that a put a full frequency driver in. I would like to add an effect unit like I see in PA systems, acoustic amps, or small mixing boards. At least...
    • Refugee
    • Thread
    • acoustic bell2122-c combo guitar multi-effect pa system reverb tube amp
    • Replies: 2
    • Forum: DIY
  8. anybodyelse

    Combing preamp with tube amp

    I want to add REL HT-1810 subs to my system. But they have only LFE, low-level RCA, or XLR input. Mine Cayin-CS55 only has a speaker out. And before I buy two of the REL Airship II for 350€ each. I thought I could buy a preamp like Denafrips Hestia, and connect the SUB via XLR and the Cayin via...
  9. JazzVinyl

    Tube Amp Recommendation: Little Dot MK9 (6SL7/6080)

    If anyone is a headphone fan and wants a good inexpensive Tube Amp...may I suggest the Little Dot MK9. It uses 6SL7 as the driver and 6080 as power tubes. The amp is unique in that it is OTC (output transformer coupled) but, employs an advanced power supply so that it can also be OCL (output...
    • JazzVinyl
    • Thread
    • 6080 6sl7 focal headphone amp little dot little dot mk9 mk9 ocl otc tube amp
    • Replies: 0
    • Forum: Tube Audio
  10. T

    Sears/Silvertone Amp Modification Questions

    I have a 1959/1960 Silvertone Model 2075 Console Stereo that has been working well aside from the turntable drive motor, scratchy volume pot, dial & indicator lights that are burned out, and poor bass response. I'm competent in electrical repair (following directions and the advice of others)...
    • tlowc34
    • Thread
    • mods silvertone tube amp upgrade
    • Replies: 7
    • Forum: Tube Audio
  11. Yeeterkeeter

    I Recently Became An Audiophile.

    I just recently became an audiophile a couple months ago, so I'm pretty new to the whole deal. What are the benefits of using a tube amplifier over a solid state or a digital amp?
  12. E

    Jolida music envoy monoblocks

    Good afternoon all. I have developed a "hum" in one channel and suspect it may be somewhere in the internal power supply of one of my monoblocks (jolida music envoy.). I have scoured the internet trying to find schematics without success. Any suggestions? They sound beautiful when functioning...
    • erfmd
    • Thread
    • jolida monoblock schematics tube amp
    • Replies: 7
    • Forum: Tube Audio
  13. ceylon

    70W 6L6GC low distortion amp by scott reynolds of tavish designs

    anyone read this article back when it was published or the past several years on the tacish website? anyone build this? build something like it? what u guys think of this design? https://cdn.shopify.com/s/files/1/0635/1487/files/70W_6L6GC_GlassAudio_No5_99.pdf?64
    • ceylon
    • Thread
    • 6l6 6l6gc stereo tavish design tube amp
    • Replies: 15
    • Forum: Tube Audio
  14. J

    Reciever for Klipsch KG-4s

    I inherited a pair of bose 901s series V about a year ago from my dad that got me into the audio world. After getting bored of the flat bose sound I did some research and pulled the trigger on a pair of Klipsch KG-4s with titanium tweeters. I moved the bose downstairs and use them as secondary...
  15. Morgan D

    Audio Nirvana EL84

    Anybody have one ? No info on AK.
  16. stevland

    Adding old tube amp to modern multi-zone setup

    Note: *indicates that a photo is attached I have an old Philips satellite speaker with an integrated tube amplifier* from the late '50s in excellent condition. (It has been discussed previously on this forum). To keep things simple I will refer to it as "the Philips cabinet" going forward. It...
    • stevland
    • Thread
    • multi room audio networking rca cable splitter tube amp
    • Replies: 17
    • Forum: Tube Audio
  17. 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
  18. Tyguy1

    Au 555a pre out trouble

    I’ve posted this to exclusively sansui with no answer so I’ll throw it out here too. I’m trying to use my au 555a as a pre amp for an mt 34 mk 2 tube amp but I’m not getting full power to my left speaker. Any ideas what the problem could be?
    • Tyguy1
    • Thread
    • au 555a pre amp out tube amp
    • Replies: 12
    • Forum: Solid State
  19. M

    Severe Sound Distortion from MC225

    Hi, a total newbie here. I hope you are all well. I have a MC225 which I bought about 25+ years ago. I hadn't used it much in the past. Like many people, I started listening more during the pandemic. Everything was fine until a year ago. One day, all of sudden, the sound got very...
    • Mil Gnoh
    • Thread
    • distortion distortion in both channels mc225 sound tube amp
    • Replies: 28
    • Forum: McIntosh Audio
  20. James Cox

    Kt-120 compatibility with Scott LK-150 tube amp

    Hey everyone, I'm in the process of picking up a Scott LK-150 but unfortunately it has no tubes. I was wondering if anyone here has tried KT120 tubes on this amp or of they draw too much current to be safely used here. When it gets here this piece is going to need a decent amount of work before...
    • James Cox
    • Thread
    • 6550 citation ii kt120 kt88 lk-150 power amp scott tube amp
    • Replies: 16
    • Forum: Tube Audio
  21. O

    knight amp screws or fasteners

    I have a Knight kn632 mono tube amp. I bought it a few years ago but never used it. I want to remove the tube cover to take a look, but it is fastened with these strange screws I've never seen before. Instead of a slot in the head of the screws, there is a sort of rectangular indentation, but...
    • Old Bull
    • Thread
    • fasteners knight screws tube amp
    • Replies: 10
    • Forum: Tube Audio
  22. J

    Best ROI for rolling in tube tuners?

    Hello AK! I'm starting to roll tubes on a suhweeet McIntosh MR67 scored a few weeks ago, and it has me pondering where the best bang-for-buck is in tube tuners: audio amps? RF amps/demux? IF filter? Stereo amp/demux? So far it's been: 1) Left audio 6BL8 was a no-diamond Telefunken that flared...
  23. Geomorphdog

    DG-SE1 Build from AMP 196-00: Mysterious failure mode! Help!

    I’m building my second DG-SE1 on the Magnavox AMP 196-00 chassis, left channel and power supply schematics below. Some particulars: - The PT plus 5U4 rectifier plus choke produces 317 volts. I’m dropping that to 265 volts with 4K so that I can follow Dave’s design. - The input tube is a 12AX7...
    • Geomorphdog
    • Thread
    • amp 196 dg-se1 iwistao magnavox single-ended tube amp
    • Replies: 36
    • Forum: Tube Audio
  24. ceylon

    sunday morning organ salvage comin down...

    tone board, amp and driver from a baldwin model 40 orga-sonic. been checkin out all the threads about a variety of amps pulled from baldwins. cant find a thread about this lil guy. i got a whole lotta of 6SN7s now to go with my frank stallone 12" single. anyone recognize the speaker?
    • ceylon
    • Thread
    • #6sl7 baldwin mono amps organ organ speaker tube amp
    • Replies: 215
    • Forum: Tube Audio
  25. C

    Little Dot MKII Paint Job

    Though I'd share this. Pictures and resolution don't do it justice but we went for a retro vibe with the colours, style and font. It was achieved using House of Kustoms root beer candy paint as well as Max Meyer Paints Hope you like it!
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