TPA3118 home stereo amplifier with high WAF

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2010-01-17 9:20 pm
[FONT=Nimbus Sans L, sans-serif]Being tired of the 30 years old bulky high-fi-tower that does not fit into any shelves with its impervious cable tangle [/FONT][FONT=Nimbus Sans L, sans-serif]on the back side[/FONT][FONT=Nimbus Sans L, sans-serif], I decided to design a home stereo of my own that is taylored to our personal needs.[/FONT]
[FONT=Nimbus Sans L, sans-serif]Priority design goals [/FONT][FONT=Nimbus Sans L, sans-serif]were[/FONT]
[FONT=Nimbus Sans L, sans-serif]-small dimensions[/FONT]
[FONT=Nimbus Sans L, sans-serif]-ease of use[/FONT]
[FONT=Nimbus Sans L, sans-serif]-as simple as possible[/FONT]
[FONT=Nimbus Sans L, sans-serif]-Bluetooth & WiFi-connectivity[/FONT]
[FONT=Nimbus Sans L, sans-serif]-[/FONT][FONT=Nimbus Sans L, sans-serif]no fancy components[/FONT]
[FONT=Nimbus Sans L, sans-serif]As a result there is one single pcb 50x100mm encompassing a TPA3118 stereo amp, a RIAA-pre-amp, a 5V powered USB-socket for a bluetooth dongle and a 3.3V output for some WiFi-interface. Speaker terminals are substituted by ¼ inch phone jacks, RIAA-inputs are RCA-type sockets.[/FONT]
[FONT=Nimbus Sans L, sans-serif]There is no need for [/FONT][FONT=Nimbus Sans L, sans-serif]bass or treble control, loudness, tape monitor, speaker group switches [/FONT][FONT=Nimbus Sans L, sans-serif]and [/FONT][FONT=Nimbus Sans L, sans-serif]all these fancy knobs and switches [/FONT][FONT=Nimbus Sans L, sans-serif]of the eighties. [/FONT][FONT=Nimbus Sans L, sans-serif]A[/FONT][FONT=Nimbus Sans L, sans-serif]ll I have to do [/FONT][FONT=Nimbus Sans L, sans-serif]is [/FONT][FONT=Nimbus Sans L, sans-serif]wire a stereo potentiometer between source selector switch and power amp input and do the signal wiring to input jacks, RIAA-amp output, bluetooth and WiFi-stereo out. [/FONT]
[FONT=Nimbus Sans L, sans-serif]Audio inputs are 3.5mm stereo jacks for an easy connection to CD-players, smartphones, MP3-Player, notebooks etc. [/FONT]
[FONT=Nimbus Sans L, sans-serif]All t[/FONT][FONT=Nimbus Sans L, sans-serif]his does not require any pcb but can easyly be handwired [/FONT][FONT=Nimbus Sans L, sans-serif]according to required input sources.[/FONT]
[FONT=Nimbus Sans L, sans-serif]The power is delivered by some small notebook AC-Adapter, [/FONT][FONT=Nimbus Sans L, sans-serif]anything between 12~24V= will do.[/FONT]
 

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