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The Muffsy MC Head Amp is Alive!
08/03/2016 at 08:53 • 3 commentsI got an MC cartridge, a nice little Ortofon MC30 Supreme:
Connecting the turntable to the Muffsy MC Head Amp and then to the Muffsy Phono Preamp. nothing but sweet silence.
Then the needle dropped, and the silence turned to sweet, sweet sound. This little rascal performs way beyond what was expected with a deep black background, rich and detailed sound and a fantastic sound stage.
A kit is getting closer, but a lot of components have to be sourced and the final PCB has to be ordered and tested.
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Muffsy MC Head Amp - Final Design
08/07/2016 at 17:02 • 0 commentsThis is the final design of the Muffsy MC Head Amp MH-1, after two prototypes (number 1 and number 2) and lots of testing and measurements.
The project front page has been updated with these new pictures.
First a rendering:
PCB Layout, top and bottom without ground:
PCB top, with ground:
PCB bottom, with ground:
Silkscreen:
Circuit Schematic:
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The Final PCB Version is Ordered
08/27/2016 at 16:16 • 0 commentsYup, that's right. The PCBs are now ordered, expected arrival in about a week.
Sourcing of components have started as well. Between building, testing and photographing the latest version so that instructions can be created, and stuffing the components, I hope to be able to offer a kit some time in the beginning of October.
Here's the latest rendering:
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Final Version of the PCB - Received
09/05/2016 at 11:35 • 0 commentsDHL came to visit, we're getting closer and closer to the final kit:
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Back Panel for the Muffsy MC Head Amp
09/06/2016 at 14:33 • 0 commentsFor those of you familiar with the Muffsy Phono Preamp, the connectors on the back panel have to be grounded (using cables) like so:
This is perfectly fine for the high output that an MM cartridge delivers, but it can be a source of noise for the lower MC signals. Here's a solution to that problem:
The RCA connectors and the ground screw will have direct contact with the copper rings around the mounting holes. These copper rings are connected with copper traces beneath the black coating, eliminating the need for separate ground cables.
Here's a look at the other side of the panel, which fits the B0905 cabinet perfectly:
Here it is with connectors, ground screw and power switch:
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The Final Version of Muffsy MC Head Amp Soldered
09/11/2016 at 16:02 • 0 commentsHere it is. There are still a lot of components coming in, documentation and packaging needs to be completed as well.
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Muffsy MC Head Amp - Build Instructions
09/11/2016 at 20:26 • 0 commentsThe build instructions for the Muffsy MC Head Amp is now available on the Muffsy home page, still hidden from the site's menus as it's not yet available.
The instructions can be found here:
http://www.muffsy.com/build-the-muffsy-mc-head-amp-mh-1.html
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Assembling the Muffsy MC Head Amp Kit
09/13/2016 at 21:30 • 0 commentsThe assembly of the kit has started, first out are the cables, connectors, sockets and switches:
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I Made it to the Hackaday Front Page!
09/18/2016 at 11:13 • 0 commentsThe Muffsy MC Head Amp made it to the Hackaday front page, that's really cool!
http://hackaday.com/2016/09/16/hackaday-prize-entry-high-end-preamps/
There's been a bit of a mix-up between this project and the Muffsy Phono Preamp though, so I wrote about it on the Muffsy Blog to clear up some of the misunderstandings:http://www.muffsy.com/blogs/post/The-Muffsy-MC-Head-Amp-on-HACKADAY/
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The Final Version of the MC Head Amp Sings :)
09/18/2016 at 20:42 • 0 commentsIt's done, it's built, it's the first of its kind, it's plugged in, it sings!
UPDATE: The kit is here and available on Tindie.
No hiccups, no artifacts, it just works playing the 40th anniversary "Crime of the Century" by Supertramp.
Sweet :)
This does mean that, with some effort, the kit will be ready in about two weeks.
Also, the build instructions are very close to finished, I'm still writing the part about testing to make sure your head amp works before plugging it in.
http://www.muffsy.com/build-the-muffsy-mc-head-amp-mh-1.html