The English Manual included here is the 2017 Sound Reinforcement Manual. (Most JW's have never heard of this manual.)
The link for that manual is here:https://docdro.id/j8tRbQ3
This second link contains leaked German 2019 BOE's, Files, Forms, a Video etc. The English Manual mentioned above is included in this zipped folder.https://we.tl/t-fDrpYiizJr
Petra!