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- Users: Beftus
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Starving Student PCB's
Should be ample current for it. Enough for adding a bunch of LEDs too.- Beftus
- Post #142
- Forum: DIY (Do-It-Yourself) Discussions
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Starving Student PCB's
The original used a .38A (or 380mA) PS. The .313A might not be enough to get it up and running. You planning on using some LEDs with it? Power LED, tube LEDs? The tube heater draws 150mA of current, and since you have two tubes both will draw 300mA of current. Throw in a LED or two tube LEDs and...- Beftus
- Post #137
- Forum: DIY (Do-It-Yourself) Discussions
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Millett "Starving Student" hybrid amp
If you don't want tube LEDs just omit them and their associated resistors.- Beftus
- Post #6,598
- Forum: DIY (Do-It-Yourself) Discussions
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Starving Student PCB's
Got mine today. Looks good. Thanks!- Beftus
- Post #39
- Forum: DIY (Do-It-Yourself) Discussions
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Millett "Starving Student" hybrid amp
Quote: The minimum is 48 volts, 0.38A, so 0.4A is enough to get it up and running.- Beftus
- Post #6,532
- Forum: DIY (Do-It-Yourself) Discussions
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Millett "Starving Student" hybrid amp
Quote: It does indeed get hot, that's perfectly normal for this amp. How hot it gets is also a function of how large the heatsinks you used are. Bigger heatsinks cool things better.- Beftus
- Post #6,511
- Forum: DIY (Do-It-Yourself) Discussions
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Maverick D1 Op-amp upgrade and other tweaks, advice needed.
Quote: Yes they are!- Beftus
- Post #2
- Forum: DIY (Do-It-Yourself) Discussions
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Please Recommend an AD8397 Pocket Amp Schematic
Hmm less robust is debatable... My Mini3 with ARZ still going strong after nearly 3 years. The opamp doesn't get really hot in use either. Running form the line out of my iPod with volume knob @ 12 o'clock into a 32 ohm Sennheiser PX-100ii (= pretty loud, borders on the uncomfortable for me) I...- Beftus
- Post #17
- Forum: DIY (Do-It-Yourself) Discussions
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Please Recommend an AD8397 Pocket Amp Schematic
Quote: The AD8397 comes in two flavors, the -ARDZ and the -ARZ. The -ARDZ has the E-pad, which allows you to use the PCB as a heatsink for better cooling for higher power applications. In the Mini3 the -ARDZ can be replaced with the -ARZ, see Mini3 construction notes. My Mini3 has the...- Beftus
- Post #15
- Forum: DIY (Do-It-Yourself) Discussions
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Dipping my toe - where to buy DIY cables/connectors in Europe?
This one perhaps? http://www.qables.com/shop/- Beftus
- Post #4
- Forum: DIY (Do-It-Yourself) Discussions
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Millett "Starving Student" hybrid amp
Quote: My build didn't have a power LED, the tube LEDs double as a pair of power LEDs. I connected the on-off-on switch, LED resistors and both tube LEDs to the 48 volts right after the power switch. For the LED resistors I used two resistors in parallel to distribute the power...- Beftus
- Post #6,244
- Forum: DIY (Do-It-Yourself) Discussions
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Millett "Starving Student" hybrid amp
Quote: Consider using an on-off-on switch so you switch of the LEDs with the switch in its central position. Need LED resitor values? Check this: http://led.linear1.org/1led.wiz- Beftus
- Post #6,241
- Forum: DIY (Do-It-Yourself) Discussions
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my DAC design - pup1 DAC
Nice touch, having added a puppy! I'm glad to see there's still progress.- Beftus
- Post #220
- Forum: DIY (Do-It-Yourself) Discussions
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Millett "Starving Student" hybrid amp
For the sake of tinkering, you can make the tube LEDs switchable. I wired a on-off-on switch between the tube LEDs, I can run them at two different levels of brightness.- Beftus
- Post #6,044
- Forum: DIY (Do-It-Yourself) Discussions
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Millett "Starving Student" hybrid amp
It's all in this thread: http://www.head-fi.org/t/319231/millett-starving-student-hybrid-amp/5685#post_7319936 Quote:- Beftus
- Post #6,042
- Forum: DIY (Do-It-Yourself) Discussions
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my DAC design - pup1 DAC
That's great news. I had almost given up on this puppy. Will Beezar be selling complete kits of this DAC (just like the GrubDAC) in the near future?- Beftus
- Post #215
- Forum: DIY (Do-It-Yourself) Discussions
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Millett "Starving Student" hybrid amp
Quote: A complete waste of capacitance IMO. Perhaps you could use them to make a flux capacitor...- Beftus
- Post #5,935
- Forum: DIY (Do-It-Yourself) Discussions
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Millett "Starving Student" hybrid amp
You build the 12au7 version of the amp. Start reading here: http://www.head-fi.org/t/319231/millett-starving-student-hybrid-amp/3870#post_6024902 Schematic: http://diyforums.org/SSMH/variants/SSMH-12AU7.gif- Beftus
- Post #5,929
- Forum: DIY (Do-It-Yourself) Discussions
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The GrubDAC
Listening to Return of the Headhunters right now with my GrubDAC feeding my 12AU7 Starving Student. What a great sounding setup. Good luck assembling your GrubDAC, it's a bit fiddly to make but once you've got it working you are rewarded with a very fine DAC.- Beftus
- Post #754
- Forum: DIY (Do-It-Yourself) Discussions
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Millett "Starving Student" hybrid amp
A 12AU7 build needs to dissipate more heat than the original 19J6 build. Every bit of extra heatsink surface area helps to keep things from getting too hot to touch.- Beftus
- Post #5,884
- Forum: DIY (Do-It-Yourself) Discussions
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Millett "Starving Student" hybrid amp
Those 63mm tall heatsinks are a good choice. You can also use cheaper 50mm tall ones but they will get noticeably hotter.- Beftus
- Post #5,882
- Forum: DIY (Do-It-Yourself) Discussions
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[Starving Student] DAC to go with SSMH amp
Another vote for the excellent GrubDAC. Sounds great, fairly cheap to build. Oh and and stripboard DAC? You're kidding right?- Beftus
- Post #5
- Forum: DIY (Do-It-Yourself) Discussions
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So, the Objective2 headphone amp - designed entirely around the measurements? (PLEASE READ RULES BEFORE POSTING)
GrubDAC output into Mini³ into PX100's gets really loud past 11 o'clock using recent source material. Go beyond that and your eardrums start clipping violently, but not the Mini³...- Beftus
- Post #248
- Forum: DIY (Do-It-Yourself) Discussions
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So, the Objective2 headphone amp - designed entirely around the measurements? (PLEASE READ RULES BEFORE POSTING)
Quote: That's exactly what I do: iPod Classic line out into a Mini³ (5x gain) into a pair of PX100's. Works like a charm. Could easily blow your eardrums, I think.- Beftus
- Post #246
- Forum: DIY (Do-It-Yourself) Discussions