• The move to the new server is done. There are some software and database maintenance updates in process. This has us passing the hat around to help out. We appreciate any donations. Seriously, even a dollar helps. The payment page may be found here - https://www.audiokarma.org/support.html

stereo

  1. C

    Grounding issues with Onkyo P-3200 and M-5000

    Hi there, I have recently acquired a stereo system consisting of an ATLP120XUSB turntable, Onkyo P-3200 preamp and Onkyo M-5000 power amp. The issue is that I have a constant hum coming through the speakers whenever I have the turntable connected. I have essentially tried everything you can...
    • Carter Rom
    • Thread
    • onkyo onkyo m-5000 onkyo p-3200 stereo turntable
    • Replies: 1
    • Forum: Solid State
  2. P

    Help…Pilot MC-4000a

    I just purchased this unit and know little to nothing about it. I’ve tested various functions (am, fm, tape, phonograph, speakers, power inputs), all of which work well. I did a simple google search to find out a little more like when it was made, what kind of unit it is (solid state etc) and...
    • Pilot mc
    • Thread
    • am audio cassette fm antenna phonautograms pilot receiever solid state stereo tuner
    • Replies: 5
    • Forum: Solid State
  3. B

    Adding switch and line input to Zenith MK2068 Console

    Howdy, I've finshed restoring my grandparent's 1962 Zenith MK2068 Stereo console, it has a 9H20LZ1 preamplifier/tuner and a 5k29 amplifier. The Preamplifier connects to the Amplifier with what looks like an XLR connection, but it's a left and right signal with ground connection. (Posted it...
    • bbs71364
    • Thread
    • console console amp diy stereo zenith
    • Replies: 8
    • Forum: DIY
  4. K

    Need help identifying missing tubes for mystery amp

    Hello, I'm working on restoring this small power amp. It looks like it came form some sort of turntable console or something since it has plugs to switch the power, an extra a/c plug, and maybe power delivery for an a/c motor. It appears to be stereo and single ended for each side. The power...
    • kanurys
    • Thread
    • amp power poweramp stereo tube
    • Replies: 21
    • Forum: Tube Audio
  5. PE9ZZ

    1971 Delco Wonderbar search borked

    I am struggling with this 15CMW1 Delco car stereo. From my brother-in-law's Caddy. The search doesn't work and I am clueless, mostly because I am not good at mechanics. The Sams Photofart manual has no section about it (and is a pretty crap scan apart from that). When I press the search bar it...
  6. Vojox

    Lambert Gear!

    Went down to a record store earlier to trade some old hardware for some cash, ended up buying a pallet of Lambert Stereo gear! Mostly Headphone amp's (play it by ear), but did manage to get a working set of MonoBlocks, 3 power cleaners, 3 Force amps, 3 Preamps, 1 sub, and 2 sets of the speakers...
  7. T

    Hamlin Stereo Speakers

    My parents are downsizing and my dad has a pair of Hamlin stereo speakers with 8" woofers that he got sometime in the late 1950s or early 1960s. They are 3 feet high and don't have any model number on them. Both are in pristine condition on the outside and they still work. I'm curious what their...
  8. Cliff Jones

    Sansui 9090DB

    Hi am new to this forum, so I really hope that I am posting in the correct place. I received this unit, owner says it wasn't playing in stereo, and had to "wiggle' the switch to get it to play sometimes (fixed that problem, with Deoxit). Well it played awesomely and sounded good. So as I was...
  9. BA3000

    Do I need a phono preamp?

    I have a Koetsu cartridge with an output of 0.4 Millivolts. My receiver is a Marantz 2275. My question is, do I need an additional phono preamp to accommodate the moving coil cartridge? I have been listening to my turntable with it connected directly to the Marantz receiver, with the only...
    • BA3000
    • Thread
    • cartridge koetsu marantz moving coil output phono preamp receiver stereo
    • Replies: 24
    • Forum: Turntables
  10. zastin17

    My First Amplifier Build!! 6L6/6P3s Push Pull Stereo

    This is my very first tube build ever. And I can't believe I did it!! I'm only 22 years old, so I'm very young and new to this Tube design thing. I have learned so mutch and now I'm addicted.... Now I can say without a doubt in my mind that my scratch built 6L6 Push Pull Stereo Tube Amplifier...
    • zastin17
    • Thread
    • 6l6 amplifier diy el34 solder stereo tube utilitarian
    • Replies: 20
    • Forum: Tube Audio
  11. Richard P

    Pioneer SX-6000 Stereo Indicator Bulb Replacement

    Hi folks. I'm finishing up some work on an SX-6000 and need to replace the stereo indicator bulb. The schematic shows a 6.3V, 0.03A bulb in series with a 470 ohm resistor. This bulb is turned on by the MPX unit through a transistor (2sc711) and the MPX schematic indicates Imax for the...
  12. bigcaps

    80's fun..

    Thought it would be cool to build a 1980s era tri amp system since in auctions pre COVID i had piles of it laying around my shop and garage not really knowing what to do with it... From Studio grade Analizer EQ systems with room measuring circuits ( thats not a new 2,000s concept btw ) to line...
  13. H

    4 Transformers in a 2 Channel Amp?

    Does anyone know why a 2 channel amp would have 4 transformers in it rather than just 2 or 1? I'm going to try and attach a screenshot I took from Bedini's webpage that shows the internals of their Dual Mono 100/100. Usually I only ever see 1 or 2 transformers in a 2 Channel amp. I have a...
    • heton03
    • Thread
    • amplifier bedini class a dual mono stereo
    • Replies: 8
    • Forum: Solid State
  14. P

    Wanted: Book Recommendations for Solid State and Tube Stereo Radios

    I just got a couple of Stereo Consoles, one Morse and another Admiral. The former is solid state and the latter is vacuum tube. They all have problems as usual. I am an electrical engineer by training. I built mono superheterodyne AM receivers in my early teens. But I have no exposure to...
  15. rolf logan

    Magnavox Model # 2P3463 End Table Stereo Console

    Hello, I just picked up the captioned record player/radio for $50. I plan on restoring it. Radio works great, speakers do as well. So, I only need to get the turntable operational. When I go to Turntable Needles, they don't have the model # listed, so I will pull the cartridge to get the...
    • rolf logan
    • Thread
    • console end table console stereo magnavox model #2p3463 record player stereo
    • Replies: 1
    • Forum: Turntables
  16. R

    Sansui 771 restoration gone wrong, help please

    Hello dear members, my name is Romulus and I am new to this forum... at least i've been reading a lot from the Sansui section and this is my first post. Recently got a Sansui 771 in very poor shape but it was working. I've done some major restoration to cosmetics and repaired a couple of lights...
    • Romique
    • Thread
    • 771 fail mistake power receiver restoration sansui stereo transistor
    • Replies: 17
    • Forum: Exclusively Sansui
  17. F

    Marantz 2250 Stereo Light Indicator Bulb

    I am looking to replace a non working stereo light indicator bulb. I found a replacement on ebay but shipping is high since I am in Canada. Would anybody know where to find the Bi-Pin Lamps 12v 40mA Bulb blue base bulb in Canada or if the following is a proper replacement...
    • Felix482
    • Thread
    • 2250 2250b marantz stereo stereo bulb stereo indicator stereo light
    • Replies: 2
    • Forum: Marantz Audio
  18. John Killian

    Pioneer QX 949 Quad Reciever NO AUDIO

    Calling all veteran audiophiles Looking for any and all repair advice you may be interested in passing off. I just purchased this Pioneer 949 from a local seller under the notion that the unit powered on, but audio was out and no longer working. For $50 I felt like I couldn't afford NOT to...
    • John Killian
    • Thread
    • audio help hpm-40 hpm100's pioneer qx 949 repair stereo trouble shooting vintage 70's pioneer virginia
    • Replies: 3
    • Forum: DIY
  19. M

    Xmass treasure hunting

    Hello all greetings from Peru. I want to get an old stereo for my family for xmass, not too much selection here. Ive found this but the owner doesnt know the model and its a long way away. Its all Emerson, thats all I know, can anyone help identify the amp especially, or if someone has any...
  20. J

    New stereo build

    Hey everyone, I finally decided I’m done with my current stereo and am ready to move on. I’ve wanted to build a vintage stereo for a while now, yet really don’t know where to start. I know almost nothing about brands or what works good together, so I’m hoping maybe some of you can lend a hand...
  21. L

    Right channel doesn't work only when it's set to stereo

    Hello. I bought a H/K PM660 not too long ago and I have been enjoying them ever since I got them fixed. Over the last few days though I noticed something peculiar. The right channel wouldn't work when it's set to stereo. When I set it to reverse, the right channel works, the left channel does...
    • lnette
    • Thread
    • h/k harman kardon hk pm660 repair help stereo
    • Replies: 16
    • Forum: Solid State
  22. M

    Scott R306 reciver FM problem

    I got this reciver with some main amp transistors problems. Replaced 4 of them and its working fine but I have a problem with the FM ot is not detecting stereo. Working only in mono and the sound is fine. As blind guess i replaced C133 but it didn't help i tried the reciver with C133 removed...
    • Mmeissa
    • Thread
    • fm radio scott scott r-306 stereo
    • Replies: 4
    • Forum: Solid State
  23. RHJ III

    Pioneer SVX-9500s vs. Pioneer D902s

    Hi everyone. I have come across a couple Pioneer receivers for cheap the SVX-9500s and the SVX-D902s. Got them both for 100 bucks. Sooo.....is there a major difference between the two units? What are the pros and cons? Which one should I use? I plan on listening in stereo mode, I'm not...
  24. DoctorJon

    SAE E102 Equalizer - Display Problem

    Hi all, I recently bought an SAE e102 computer direct line stereo equalizer from Goodwill. It works fine some of the LED display works but the center equalizer display is completely black. You can anyone help me diagnose why this display isn't reading anything at all. Thanks, J
  25. S

    Help Finding Replacement Bulbs Re: Zenith SS Record Console

    Hey everybody... I inherited a late 70s/early 80s Zenith turntable/8 track console in outstanding condition. I already rebuilt and tuned up the BSR. 8 track works like a champ. Not the highest end model by any means but my 12 year old daughter got introduced to vintage vinyl and she's obsessed...
    • scupbucket
    • Thread
    • 8 track bulbs console record solid state stereo zenith
    • Replies: 17
    • Forum: Solid State
Back
Top Bottom