Monolith III internal Step-up schematic

[JonFo]

Here is the schematic of the board and wiring for the component that is mounted inside a Monolith III woofer box, depicting the step-up transformer and wiring to the panel.

Note: the Monolith III depends on external crossovers, either the IIIp external box, or the IIIx Exos active crossover (or your own modern DSP), so the inputs on the back of the speaker are a panel input and a woofer input. The woofer input feeds a 2-conductor wire that goes straight onto the woofers posts. The panel input feeds the circuit depicted here. Not shown in this schematic is the line-voltage input.

 

[JonFo]

I note that the diagram does not have a detailed circuit path and parts value for what's on the circuit board. But if updating caps, then just replace like-for-like (or higher spec) components, IIRC, they are all labeled.