This one had me intrigued enough to try out -- but, no, it sounds the same with no bolt at all.
It'll be interesting to see if its twin is the same. Then again, the DC Trap gives me one more thing to build. 🙂
The Richlite I used for the front-end-board brackets wasn't up to holding M3 tapped holes. I've tapped successfully into other phenolic boards before, so I'm not sure if it's the difference between paper-based phenolic (Richlite) and linen/cotton-based ones, or if it's just the tiny threads on M3.
In any event, I had to Helicoil them:
This shows the new routing of the output wires along the back panel instead of from the fronts of the output boards. While not in this picture, the feedback wire also attaches to the output post.
In any event, I had to Helicoil them:
This shows the new routing of the output wires along the back panel instead of from the fronts of the output boards. While not in this picture, the feedback wire also attaches to the output post.
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Cannot get enough of the railroad! So amazing! 
How about an audio system for Jefferson Station next?
We know you can build big beefcake amps but how about little ones? 😀
How about an audio system for Jefferson Station next?
We know you can build big beefcake amps but how about little ones? 😀
I know this is a but late but is the circuit board shown available somewhere for purchase?
An externally hosted image should be here but it was not working when we last tested it.
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The source files are posted here somewhere. I also know a couple of people made up batches of them, and may have extras. My memory is hazy, but probably Carsten and Dennis?
@WntrMute2,
sorry, I'm have no more left of these boards. They are cheap search for there gerbers and let make you own, it is easy!
sorry, I'm have no more left of these boards. They are cheap search for there gerbers and let make you own, it is easy!
That board appears to have been designed by Jeff Young who put his name on the silkscreen layer -- you can see it on the color photo.
post #642 of the F3 builders thread, contains Gerbers.
And then later, he enhanced the PCB as shown in post #17 of his Beefcake thread. Notice the new nickname on the beefed up diode board.
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post #642 of the F3 builders thread, contains Gerbers.
And then later, he enhanced the PCB as shown in post #17 of his Beefcake thread. Notice the new nickname on the beefed up diode board.
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He responded in another thread. Doesn't have boards and the files are buried here on DIY somewhere. Will keep searching and thanks to all!
PCB Prototype & PCB Fabrication Manufacturer - JLCPCB
These guys have done well for me. Quick too. Just submit your files and they will let you know if all is well.
These guys have done well for me. Quick too. Just submit your files and they will let you know if all is well.
Some board houses will take just the .kicad_pcb file directly so you don't have to worry about all the Gerbers and drill files. I *think* JLCPCB is one of those, but I'm not 100% sure.
But if they took the .zip then all should be good.
But if they took the .zip then all should be good.
FWIW, Beefcake turned in to Jam Jar, which got an even bigger bridge (Jammy Bridge).
But it would be overkill for a FirstWatt-size amp.
But it would be overkill for a FirstWatt-size amp.
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