Fet version of the Engl530
Schematics (pdf)
Ready to transfer PCB (pdf)
Upper side assembly (pdf)
Bottom side assembly (pdf)
Assembled board.
With proper assembly, tuning is reduced to the adjustment of the drain voltage of transistors in accordance with the schematic by trimmer resistors.
Controls (pdf)
Reamping samples using 5W Fet PA and 4x12 cabinet. Tone controls at preamp in middle position, "Presence" and "Depth" at PA also in middle position. Digits after channel name represents "Gain" setting.
Recording path: E-MU Tracker Pre->Fet Engl->Fet PA 5W->Bull 412V+L(4x12)->Sennheiser e906->E-MU Tracker Pre
Reamping samples using V30 speaker simulator output. Tone controls at preamp in middle position. Digits after channel name represents "Gain" setting. Files marked "R" before extension recorded via stereo reverb.
Recording path: E-MU Tracker Pre->Fet Engl->V30 speaker simulator->E-MU Tracker Pre