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tone controls

  1. thorpej

    A 6AS7-based pre-amp with tone controls

    A couple of years ago, @kward started this thread: https://audiokarma.org/forums/index.php?threads/thinking-of-building-a-low-gain-preamp.783332/ In response to that thread, I ran a couple of experiments with a 6080 that showed some promise, and then promptly put the idea at the tail of the...
    • thorpej
    • Thread
    • 6080 6as7g pre-amp tone controls
    • Replies: 10
    • Forum: Tube Audio
  2. Alex Estrada

    Pioneer SX-939 & Graphic EQ/Dynamic Expansion

    Hi everyone, Still a pretty new member so please forgive me if this thread is not properly located, but I found similarly-themed threads in the Solid State category so here goes. I'm having several components of my stereo looked over by my very capable local tech as I'm currently in the...
    • Alex Estrada
    • Thread
    • dynamic range expander equalizer graphic equalizer sx 939 tone adjustment tone controls
    • Replies: 11
    • Forum: Solid State
  3. dishman

    marantz 2230 no tone control

    My Marantz 2230 just lost tone control. The sound became very thin, and none of the bass, mid, or treble pots have any effect. It affects both channels. Volume works fine and the loudness contour still has an effect when turned on and off. I've not noticed distortion, although it's so thin...
  4. Drum

    Strange issues with NAD 7240

    Well I enjoy my NAD 7240 so much (after diagnosing problems thanks to members here) that I got another one. Unfortunaely this one has much bigger issues. Symptoms Very low sound from any input - about 60 db at full volume. Did some tests. Used pre-amp on another amp and nothing changed...
    • Drum
    • Thread
    • 7240 capacitors low volume nad pre amp repair tone controls
    • Replies: 12
    • Forum: Solid State
  5. s-petersen

    Tone controls

    Hi Guys and Gals, I have a Dynaco Pat 4 I would like to convert to tubes, but many of the controls (which are quiet and track well) are different resistances than the circuits I would like to try. Is there a way to figure out which other values need to be changed in an existing circuit to...
  6. viennadad

    G-5700 tone controls not working

    Picked up my first Sansui piece the other day. All I did day one was verify it powered up and was not in protection mode. Day 2 involved deoxit on as many switches and knobs as I could reach with the cover off. When I was done I hooked it up and at low volumes and tried it out. Everything seems...
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