Service schematic for the Bose AM15P, as named in the file, likely an amplifier or powered bass module from an Acoustimass-type speaker system.

PDF of 6.86 MB titled for an XTi series, with no brand given in the name. Crown sells a power amplifier line called XTi, so the document may relate to it, but contents…

Merged PDF of application circuits for the STK41XX series, the Sanyo thick-film hybrid power amplifier modules used in many audio systems and mini components.

Modified schematic for the Yamaha PA-2400 power amplifier, an 83 KB PDF marked as version 1 and apparently a copy of an earlier file.

Tone control circuit intended for a 2.1 channel audio system, in a 159 KB PDF. It shows the bass and treble adjustment network that sits between the source or preamp and…

Speaker protection circuit for a 2.1 audio setup, a user-drawn design in a 139 KB PDF. Such boards normally delay relay engagement at power-up to stop thumps and…

PDF document named after TAS5614LA, a Texas Instruments Class-D audio power amplifier IC used in audio equipment.

Service manual for the Audio Pro Ace Bass B1-39 subwoofer, a compact 272 KB PDF that likely holds the core amplifier schematic and perhaps a parts list.

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.

Compact PDF schematic whose name points to a parametric equalizer combined with a subwoofer filter stage.

STK4121V datasheet in PDF format, 92 KB, covering a hybrid audio power amplifier module from the Sanyo STK series.

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.

Large 962 KB PDF for the LM324P, the quad operational amplifier in a plastic DIP package, as the P suffix commonly indicates.

Ground resistance map for the iPhone 7 Plus RF power amplifier area, labelled LBDSM_RF in the Chinese title, supplied as a 7.31 MB PDF.

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…

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

Archive for the Blaupunkt GTA 250 amplifier, part number 7607792037, packed as a 649 KB RAR file.

Network or RF section from the Samsung Galaxy A30s (SM-A30S) schematic collection, as a 4.29 MB PDF file.

Service manual PDF for the Audio Pro TA150 receiver, matching the rec and sm tags in the name.

Datasheet PDF for the KIA324P with an additional F suffix in the name, 321 KB, filed under schematics.

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.

Network and cellular RF section of the Samsung Galaxy A12 (SM-A12) schematic, 3.40 MB PDF.

Service manual for the Audio Pro B1.35 MK2 subwoofer, read from the B1_35MK2, sub and sm tokens in the name.

Datasheet for the 2N3055, filed here under schematics as a 39.8 KB PDF. The 2N3055 is a classic NPN silicon power transistor, usually in a TO-3 metal can, found in…

Datasheet covering the 2N3055, the classic NPN power transistor in a TO-3 metal case, provided as a 171 KB PDF.

Schematic PDF for the JBL PartyBox 710 portable party speaker, delivered as a 13.5 MB RAR archive.

Datasheet PDF for the IRFP240, a 60.1 KB document. The IRFP240 is an N-channel power MOSFET in a TO-247 package, commonly found in power supplies, amplifiers and…

Class H power supply schematic, version 0.2, fuse type, marked final, in a 1.39 MB PDF.

Very small PDF schematic named only 4kw2, probably a second sheet or variant of a 4 kW power amplifier design, though the name gives no further detail.

Datasheet for the 2N5301 transistor, stored as a 252 KB PDF with an RE suffix whose meaning the name does not explain.

PDF bundle of Bose schematics, 1.53 MB in size, whose name lists no particular model, so the covered products must be confirmed by opening it.

Named only 2SC4365, this 148 KB PDF is filed with schematics but should contain the manufacturer datasheet for that transistor.

PDF schematic for an active subwoofer project designated PSW500, a 284 KB document credited to Rat Net, whose name describes it in Spanish as an active subwoofer.

Datasheet in PDF form for the IRFP250 N-channel power MOSFET, a compact 92.6 KB file. Expect absolute maximum ratings, on-resistance, gate charge, safe operating area…

Datasheet for the IRF510 N-channel MOSFET, a 97.7 KB PDF. The document should cover ratings, transfer and output characteristics, capacitances and the TO-220 pinout.

PDF schematic labelled BCi with the year 2012, most likely an amplifier design from the same family as other BCi drawings, though the name itself states no power rating…

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

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

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…