Please Help By Sharing Fourier Sans Pareil OTL Biasing Instructions/Procedures?

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    • #1728
      Massimo Stefanizzi
      Participant

        Stay away from these amplifiers if you don’t want to risk serious accidents. It is an outlawed design! Buy yourself a current solid-state amplifier of adequate power for your speakers (no less than 300w.) and you will live happily and carefree, your speakers will be grateful.

        https://www.audioasylum.com/cgi/vt.mpl?f=otl&m=122

      • #1726
        BounceHit
        Participant

          Post-holiday re-request for help with biasing instructions for the “original” Fourier Sans Pareil amps? 🙂 Thanks, BH

          • #1729
            lotus123
            Participant

              Sorry couldn’t help. The risk of frying your ESL is high with them. sold my Atmasphere last year and couldn’t be happier with a pair of class D mono blocks.

              • #1730
                Massimo Stefanizzi
                Participant

                  I totally agree. For eight months now Mola Mola Kaluga has opened my eyes and ears, and the A1s have thanked me!
                  Size, weight, power consumption and price that is only a small fraction of that of the usual Class A and AB amplifiers of similar power.
                  Moreover: performance and sound quality are unquestionably superior.

            • #1715
              BounceHit
              Participant

                No Fourier Sans Pareil OTL owners here with access to a manual and/or biasing instructions? Thanks! BH

              • #1695
                BounceHit
                Participant

                  Hello!

                  I am in the process of having my vintage Fourier Sans Pareil OTL’s reconditioned.

                  The tech is very experienced, an electrical engineer by trade, but needs a copy of the Fourier Sans Pareil OTL manual, including the specific instructions to bias the amps.

                  Can anyone here please help?

                  @atmasphere

                  Thanks!

                  BH

                  • This topic was modified 5 months ago by BounceHit.
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