Good luck! VTL does not give out schematics, even to authorized dealers, even on old models. When I needed to have work done on my VTL Deluxe 500 monos, my tech had to draw his own. Fortunately, he's good enough that he could.
VTL MB450 Schematic
I have a pair of VTL MB450 signature monoblocks. Has anybody got a copy of the circuit schematic ? I have been trying to contact VTL but getting no response. From reading some of the threads this is not unusual ! One of the amps is in for repair and the schematic would assist the engineer.
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Most VTL and other push pull tube amps are loosely based on the Williamson push/pull amp circuit, if the tech is experienced he shouldn't need it. https://www.google.com.au/search?q=Williamson+Tube+Amp+circuit&source=lnms&tbm=isch&sa=X&ved=0ahUKEwi-8oOvlsvQAhUJ-mMKHQiOCEEQ_AUICCgB&biw=1680&bih=933 Cheers George |