Recent content by karma78

  1. K

    Aguilar OBP1 DB924 repair

    Hi everyone, A friend of mine gave me a Agular DB924 bass Fet Preamp to repair ! As I'm electronic technician, I thought I could repair it easily but....when I opened it, I was surprised to find some silicon inside ! As I cannot find the schematic of the preamp on the net and repair it is an...
  2. K

    Manual for ampeg B15T

    HEllo everybody, I'm looking for the Service Manual ( schematic ) for this amp !:crying: Where can I find it ? Thank you ;)
  3. K

    Schematic for Ampeg BT-25 (obscure solid state head)

    hello everybody, Does anybody already have adjust the bias of a BT15 / BT25 head amp ? Can someone tell me where the 2nd Pot. (r812 15K) is located ? thank you for your help Jim - France
  4. K

    AMPEG Bt-15 problem !!!!!!

    Hello there ! I have a Ampeg BT-15 (solid state/trasnsitor) with problems ! The sound is distorted and it comes from the power stage (the preamp seems to be OK) ! does anybody here have the schematic of the Amp ? here are the part nb of the boards (Preamp: 64-60-054C / Power Board...