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output

  1. david winter

    Output transistors subs with higher gain

    Hi, I've been wondering whether the gain of output transistors is critical if the subs have 2 to almost 3 times the gain of the originals and what changes should be done to compensate. I'm interested in this quesiton in a general case after trying to find subs for a Sony output stage using...
  2. D

    Output coupling capacitors receivers and amplifiers from Germany

    Hello. I searched the net but I can't find any information about this subject. I know about Japanese products but how about products from Germany? Have the old Saba, Grundig, Telefunken, Wega , Dual, Basf, Nordmende, Uher, ITT, Braun, Revox, or other vintage manufactures output coupling...
  3. W

    What else to do when output transistors go bad?

    I have replaced output transistors in many different receivers and usually they function just fine afterward. Some continue to repeatedly blow the transistors. Besides merely replacing the transistors, what other steps and measures should be taken to ensure an amplifier is running properly and...
    • W.T. Holt
    • Thread
    • amp bias bjt output output transistor transistor
    • Replies: 13
    • Forum: Solid State
  4. HiResDes

    General Question about Elekit TU-879s

    Alright guys, I've never really dealt with tube amplifiers in the speaker world and I'm just generally confused about why they seem to be sought after in some circles when they don't seem to ever have as much output power as even entry level receives and solid state integrated amplifiers. I...
    • HiResDes
    • Thread
    • boston acoustics a150 diy tube amplifier elekit tu-879s impedance output polk monitor 7 sensitivity watts
    • Replies: 6
    • Forum: Tube Audio
  5. Fonzombie

    PIONEER SX-3900 - Cracked Output transistor sockets

    I have a pioneer sx-3900 and it seems to be working great - i opened it up to give it a look through and found on the bottom side connected to the heat sink most, if not all, of the white silicon output transistor heads were cracking. Is there a way to fix this??? The rest of the unit is in...
    • Fonzombie
    • Thread
    • output pioneer silicon sx-3900 transistor replacement
    • Replies: 20
    • Forum: Pioneer Audio
  6. david winter

    SAE Two model A7 - need technical info for rebuild (500+ mV per channel...)

    Hi, I'd like to restore an old SAE Two type A7 amplifier. I'm not used to redo SAE amps hence my request. I already recaped the output section but still have over 500mV on both channels. Three output transistors are not original. The relay clicks after two seconds once powered on despite the DC...
  7. T

    Tandberg TR 2080 not producing any sound

    Hey guys, first post :) I have a Tandberg TR2080 that was my fathers. I beat the crap out of it in my teenage years unfortunately so it is in need of some TLC. I convinced him to let me do right by my mistakes from when I was a younger man and offered to restore it as best I could. It powers...
    • TheSeanis
    • Thread
    • 2080 help output tandberg tech tr 2080 vintage
    • Replies: 7
    • Forum: Solid State
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