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noise preamp noise

  1. HotRodStereo

    Audio distortion from Phono Stage

    Hi! I am still learning the dark arts of vintage audio repair, and I am looking for some sage wisdom on a unit I am trying to fix. Here is the story - Its a Sony STR 2800, I cleaned it up and it was working great, got everything all balanced and checked and listened for a while and then sold...
  2. H

    Yamaha C4 preamp fault. Hum. Phono switches.

    Have done a lot of work on this preamp and am starting a fresh thread because several faulty components have already been replaced or repaired and am hoping it may now be much easier to isolate and identify the problem. The issue: Hum is present on all inputs. -Playing vinyl on Phono 1 and 2...
    • Hifibythekg
    • Thread
    • earth ground hum hum noise preamp noise preamp yamaha yamaha c-4
    • Replies: 116
    • Forum: Yamaha
  3. C

    Max distance from turntable to amp using RCAs

    I'd like to set up my turntable about 12ft from my receiver on a straight line, but more like 16ft-20ft to have the RCAs wind their way over to the spot where the turntable will sit. So the setup will be turntable to phono preamp, phono pre to receiver. I've heard people say that your turntable...
    • chris lihou
    • Thread
    • noise preamp noise pre amp rca cables sound decay
    • Replies: 14
    • Forum: Turntables
  4. trickert

    Help with GAS Thoebe Preamp: it hums

    Hi, I have picked up a GAS Thoebe preamp. It has been recapped and is otherwise in great shape. I'm listening to vinyl through it, and it sounds excellent... with one snag. It hums. There's a low hum coming out of it. The hum gets lower and higher with the volume; when I turn the volume all the...
    • trickert
    • Thread
    • g.a.s. gas great american sound company hum noise preamp noise preamp thoebe
    • Replies: 23
    • Forum: Solid State
  5. Sgrobstein

    McIntosh C20 Noise Issue

    I have a McIntosh C20 that has been completely restored (All caps and resistors replaced). There is an inconsistent noise coming from the unit. Noise is louder in the phono section. Noise appears about 1x per second but is inconsistent when it shows up. There is a consistent sounding noise...
    • Sgrobstein
    • Thread
    • c20 help needed mcinstosh noise noise preamp noise pre amp help preamp
    • Replies: 11
    • Forum: Tube Audio
  6. M

    Adcom GFP345

    Hi everyone a friend of mine has a problem with his ADCOM GFP-345. He got those high pitched signal tone about 5700 hz from time to time from his GFP345 in both speakers. It disappears and come back again and again. When the music plays loud then he does not hear these signals but sometimes the...
    • Marantz22xx
    • Thread
    • capacitor high pitch noise preamp noise schematic service manual
    • Replies: 16
    • Forum: Solid State
  7. I

    Please help!

    So I am extremely new to building tube amplifiers. I've never done this before, but this concept intrigued me alot, therefore I decided to build one. I followed a schematic of a 20W pc tube amplifer. To my knowledge, and to checking my work multiple times, I have followed the schematic...
    • ilya__
    • Thread
    • amplifier noise preamp noise tube tube amp distortion tube amplifier valve
    • Replies: 22
    • Forum: Tube Audio
  8. MetalDaze

    Ground Loop Solved, other problems arise?

    As the title states I discovered- and solved- a ground loop issue I didn't notice was there until I upgraded my cables. Went from generic bestbuy brand to Audioquest and immediately had a hum in the speakers. Plugged my amp into the same circuit as everything else and the speakers are whisper...
    • MetalDaze
    • Thread
    • amplifer distortion ground loop noise preamp noise preamp
    • Replies: 5
    • Forum: Solid State
  9. tusntuk2

    Kenwood KR-5600 Intermittent noise - is it bias related?

    This is the third thread on this interesting receiver. Previous threads helped fix a relay problem and questions about recapping - thanks again! Now I have replaced all electrolytics in the PS and the Audio board (power amp) and the amp sounds amazing with the FM radio. (Yay!) BUT - here's...
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