1. Federmann

    Topology Federmann, HQQF-55 ...

    I dedicate audio 40 years, I never disclose their topology until the last years. Here is one of my latest amplifier topology.
  2. S

    2sj200 2sk1529 toshiba mos-fet

  3. S

    Amp goes on protection?

    Hey, I own a Rockford Fosgate 350s amp and it goes on protection when there is a load. My circuitry look great. I have read that my output mosfets are burnt. Could it be something else? Much thanks, steven123654
  4. S

    Rockford Fosgate/Mosfet

    Hey, I own a rockford 350s amp, and I burnt my output mosfet. I want to replaced them but I dont know how to remove them from the heat sink.The problem is that the amp uses what Rockford call Mesha witch is the back of the mosfet (big metal connection for heat transfer) connected to a PC board...