Circuit schematic for the subwoofer 7294 project, version 1.1, a 55 KB PDF. The name suggests an amplifier built around the TDA7294 audio power IC, but the PDF itself should confirm this. The schematic shows the amplifier stage, filtering and supply connections, useful for building, testing or repairing the module. It belongs to a set of files for the same design, including PCB layouts, an assembly drawing and a metalwork drawing. Check supply voltage and heatsinking against the drawing before powering up.
The button opens the matching file on RM Schematics, or a source page if it is not catalogued there yet. The original attachment is from @pdf_servicemanual. Enginerys does not host this file.
How to open a .pdf file
The standard format for schematics, block diagrams, power-sequence charts and service manuals.