Power supply schematic for the Sony KDL-40U2000 LCD television, a 2.1 MB PDF. The name refers only to the power section, so expect drawings of the mains input, PFC…

Power supply schematic shared by the Sony KDL-40S3000 and KDL-46S3000 LCD televisions, in a small 148 KB PDF.

Backlight inverter schematic for the Sony KDL-40S3000 LCD TV, delivered as a 110 KB PDF.

Schematic PDF of 674 KB whose name refers to Ziroshi, possibly with version 12-6 and the model code Bp7000.

Schematic PDF labelled only V400, a 327 KB file whose name appears to be a duplicate copy.

Document on building a transmission line loudspeaker enclosure, a 498 KB PDF filed among schematics.

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…

PCB artwork for the subwoofer 7294 design, version 1.1, in a 72.5 KB PDF. The Polish word oddruku in the name indicates a print-ready layout, meant for toner transfer or…

Printed circuit board layout for the subwoofer 7294 project, revision 1.1, as a 72.5 KB PDF.

Assembly drawing for the subwoofer 7294 amplifier, version 1.1, provided as a 138 KB PDF; montaz is Polish for assembly.

Sheet metal drawing for the subwoofer 7294 project, version 1.1, a small 23.7 KB PDF; blacha is Polish for sheet metal.

Main document for the subwoofer 7294 design, version 1.1, a 138 KB PDF without a further descriptor in its name.

Schematic PDF titled SENUSA, revision 2, with a fairly large size of 9.57 MB. The name gives no brand or device type, so open the document and read the title block to…

Schematic labelled SENUSA 3, a 5.87 MB PDF, apparently a later version of the SENUSA design that also appears as revision 2.

Schematic in PDF form labelled safari std, a name that in DIY audio circles usually refers to a Safari power amplifier design, standard version, though the file name…

PCB artwork for the top side of an R2 class power amplifier rated around 500 watts into a 4 ohm load, saved as a 177 KB PDF.

Bottom-side PCB layout for the R2 amplifier design rated 500 watts at 4 ohms, stored as a 138 KB PDF.

Preamplifier schematic, the file name being the Romanian word for preamp, delivered as a 574 KB PDF with no model or brand stated.

Romanian-labelled schematic of a preamplifier with tone corrector, meaning a bass and treble tone control section, provided as a 330 KB PDF.

Peavey transistor cross-reference sheet in a compact 96.6 KB PDF. Peavey amplifiers often use in-house part numbers on semiconductors, and a cross list like this maps…

PCB document named VDBL Multi, a 4.16 MB PDF that likely holds layouts for several board variants of a VDBL style amplifier design, as the multi tag suggests.

Top-side PCB print for an R2 amplifier rated 1500 watts into 2 ohms, with the Indonesian note langsung print meaning ready to print directly.

Bottom copper layer of the R2 power amplifier PCB rated 1500 watts at 2 ohms, marked langsung print, Indonesian for direct print.

PCB document for an R2 power amplifier listed at 1000 watts, as a 3.50 MB PDF. The larger size suggests detailed artwork, possibly with both layers or component…

PCB layout for a Matrix amplifier rated 125 watts, labelled Beta 2008, as a 266 KB PDF.

Final PCB artwork for an amplifier using Sanken output transistors, labelled 7 set, which likely indicates seven pairs of output devices, delivered as a large 7.42 MB…

Schematic or layout for a PA-300 amplifier, possibly a 300 watt public address design, saved as version 1 in a 1022 KB PDF, with a timestamp suggesting an April 2023…

Schematic for a mosque mixer, the Indonesian name Mixer Masjid, model Master Box X6, provided as a 585 KB PDF despite the doubled extension in the original name.

Matrix 1.4 amplifier design in BTL configuration, meaning bridge-tied load where two amplifier halves drive the speaker in opposite phase, as a 1.76 MB PDF.

Matrix II amplifier document labelled t13 x73-1, provided as a 1.84 MB PDF; the tokens appear to be a variant or board identifier, though their exact meaning is not…

Updated release of the Matrix II t13 x73-1 amplifier document, marked new, in a 1.69 MB PDF.

Top-side PCB print for a Matrix i4 amplifier rated 250 watts into 4 ohms, tagged langsung print, Indonesian for print directly.

Bottom copper artwork for the Matrix i4 amplifier board rated 250 watts at 4 ohms, labelled langsung print, meaning ready for direct printing.

Matrix 1.4 amplifier document tagged WS3, likely a variant or board revision label, in a 978 KB PDF. The name does not state power rating or load.

Document named f970, attributed by name to its author yahya, provided as a 3.14 MB PDF.

Small 173 KB PDF named dos vas, a short and uninformative title that most likely refers to a dual VAS layout, the voltage amplifier stage of a class AB power amplifier.

Top-side print for a universal dos vas Matrix board, likely a dual voltage-amplifier-stage module, marked langsung print, meaning ready to print directly.

Bottom copper layout for the universal dos vas Matrix board, probably a dual voltage amplifier stage module, tagged langsung print for direct printing.

Core board document for a Matrix 1.4 design paired with an R2 1000 watt amplifier, with the trailing 2 R likely meaning a 2 ohm load, in a 398 KB PDF.