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schematic

  1. mattking52

    Looking for Conrad-Johnson PV10B schematic

    Hi all, Do any of you fine people happen to have the schematic for the C-J PV10B preamp? I have one on the way to me now via UPS from a nice gentleman in Alabama, and I'm curious to see how exactly it differs in circuit design from my current PV10AL (other than the obvious addition of a phono...
    • mattking52
    • Thread
    • conrad johnson pv10b schematic tube amp
    • Replies: 7
    • Forum: Tube Audio
  2. teebee

    KLH 4 Model Four crossover schematic?

    I bought a pair of KLH Four that had no tweeter response, so I tore off the grilles (and saved them for smaller speakers like my AR 4x) and found out, after carefully removing the lacquer over the solder blobs, that the tweeters tested good. I knew that the caps were no good, as is quite often...
    • teebee
    • Thread
    • 4 crossover klh model four schematic wiring
    • Replies: 3
    • Forum: Speakers
  3. cmarinkovich

    Vintage Speaker Cabinet Build Plans

    I would like to build some cabinets for drivers from the following console stereos. Wards Console model GAI-2754B 12” woofer 789337d: McGregor Horn 78c200-4 73.30: Unkown Manufacturer Tweeter 78c148-23 7899383 McGregor RCA Console model: VMT-50W 1464184-3 2746909 8 BY 10: RCA Horn...
    • cmarinkovich
    • Thread
    • airline cabinet design owners manual rca schematic speaker building tube amplifier vintage speakers wards zenith console
    • Replies: 4
    • Forum: Speakers
  4. S

    Can you identify this tube amplifier?

    12ax7 / 6bq5 (7189?) stereo push-pull tube amplifier / console pull. Seems to have a half-wave solid state rectifier (two diodes). OPTs are labelled 1221 and 9496237. RCA and wired speaker outputs (black/red wires). 6 pin molex on chassis, and 4-pin molex on harness. Auxillary power outlet and...
    • sardox
    • Thread
    • mystery output transformers push pull schematic tube amplifier
    • Replies: 34
    • Forum: Tube Audio
  5. A

    Looking for a Rauland 1835 schematic

    I am working on an old (1948?) Rauland 1835. It is a four input audio amplifier and my life would be a lot easier if I knew how it was wired when it left the factory. THEN I can figure out what some of the other junk in there is. Thanks.
  6. bradscoolio

    Looking for DIY MM Phono Stage that sounds great

    Heya, I'm looking at building a mm phono stage. I'm happy to break out the ferric chloride for single sided PCB etching or just use a bread board. I'm not overly well versed in electronics, only year 12 VCE (A levels) physics electronics knowledge + soldering skills from other PCB projects that...
    • bradscoolio
    • Thread
    • amp circuit diy pcb phono schematic
    • Replies: 40
    • Forum: DIY
  7. T

    Nikko Beta 50 - missing capacitor - can anyone help

    Hello , I was hoping someone here may have access to a nikko beta 50 preamplifier. I have not been able to find a schematic anywhere for this unit. And the previous owner had removed some parts to replace and never finished the project. I need to know which capacitors c806 and c817 were. They...
    • Trebolo
    • Thread
    • capacitor help nikko preamplifier schematic
    • Replies: 2
    • Forum: Solid State
  8. Harlon

    Philco 47-1230 - Schematic Help?

    Hello, I made a foray into getting my wife's acceptance of my new hobby. Bought a Philco standup AM-FM-Shortwave w/TT that she liked today. It's driven by a 47-230 Philco Amp. I've been searching for a copy of the schematic and service paper work but haven't had much luck. Does anyone on the...
    • Harlon
    • Thread
    • 47-230 philco schematic
    • Replies: 8
    • Forum: Tube Audio
  9. Citation II Schematic

    Citation II Schematic

    Citation II schematic
    • jcolletteiii
    • Media item
    • citation ii schematic
    • Comments: 0
    • Category: DIY
  10. Realist 36-887 AM tuner schematic

    Realist 36-887 AM tuner schematic

    Radio Shack Realist 36-887 AM tuner schematic
    • ChrisW6ATV
    • Media item
    • 36-887 radio realist schematic shack
    • Comments: 0
    • Category: Member's Tube Gear
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