I think I’ll need another box, a volume controler and a input selector (not really a pre-amp but similar in use)
I only need some connectors to have all the stuff I need to build this : http://diyaudioprojects.com/Chip/DIY-TDA2050-Hi-Fi-Chip-Amplifier/ I don’t actually need this amp because I have a nice one already but I want to have some fun. Chiisai Fukurou It’s a pleasure to share stuff, one of the few joys of the internet.
Half of the simple shielding I’ll do in the amp case and the Jan Meier Crossfeed.
Cmoy board using a darn Burr-Brown 2132PA. The JRC’s that I got need at least 9V in each rail to work fine…darn. Next crossfeed section from Jan Meier. I really need to shield these boards.
The DC regulator and rail splitter boards in the headphone amp enclosure. 12VDC to a 9V 7809 regulator to a dual TLE2426 rail splitter that outputs 4.2V to the V+ & V- rails. I flipped the RCA and power back panel after taking this photo, now the PWR jack is closer to the PWR switch. … Continue reading Headphone amp update.
Still need to make the led holes.
Headphone amplifier in the works. Not sure if I’ll use 9V batteries or a regulated source, maybe both. Believe or not that’s a lot of money on a table.
My passive audio router half build, I still need to solder the jacks and LEDs. Sorry for the quality of the photos, my cell sucks with macros.
Yea, I’m actually building something for a change…Yeeeaaaa for me! Got tired of Y adaptors so I started building a passive stereo signal router. Easy concept, computer audio goes in, I select one of 3 independent positions, stereo signal goes out to one of them. Passive but it still needs power because I want the … Continue reading Building my passive audio router.
I made these years ago
Image: Wikimedia.org What does Burr-Brown, JRC and Grado have in common? The Grado RA1 headphone amplifier, beautiful enclosure and sound until someone discovered that it uses a JRC 4556 opamp in a circuit similar with the popular Cmoy. Fanboys went nuts…an expensive headphone amplifier that uses a cheap opamp!? No way! We shall upgrade it to … Continue reading JRC 4556 opamp.
After working a decade in civil construction I have a pretty idea that shit happens to all of us specially if we are makers of things. My typical advice is to use protection gear and always but always think about safety first! In fact most DIY sites remember that all the time, but people forget about it … Continue reading The dangers of DIY.
My very small corner for small DIY works, mostly audio electronics related stuff. The picture is self explanatory, I love the little pink spoon on the block…my little daughter strikes again! XD I love being a parent!
My workbench for electronics and small projects. I had a space problem at home and this bench is the solution. Recycled legs from an old kitchen table, pine wood because I had those boards around. Light and power on the table so I can change places fast. Sorry for the mess but my home is … Continue reading Workbench for electronics.
Made this today, it’s a Headphone Dummy Load to help me debug some amplifier projects, don’t want to test new amps with expensive headphones so this will do. Audio jack connected to a DPDT Switch with two resistor settings of 33 Ohms and 330 Ohms, my version is made with four 10W resistors with a 5% … Continue reading Headphone dummy load.