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Showing content with the highest reputation on 05/08/2017 in all areas
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Spent Friday, Saturday and Sunday replacing the deteriorating wood decking with composite. Thanks to my bro-in-laws for doing 80% of the work, the deck lives again. Sent from my iPhone using Tapatalk11 points
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I usually stagger after the joints... Sent from my iPhone using Tapatalk6 points
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Colin's IV (which is a common base topology) is a good alternative for a current out DAC. It is similar to Jocko's circuit, or Nelson Pass', and it can be made differential without too much trouble. For a voltage out DAC, a simple emitter or source follower works great as a buffer. Even a diamond buffer is a good alternative, and it can be made DC couple-able with the help of a servo (unlike some off the shelf diamond buffers.) Or any of Pass' recent buffers are good options. There is this myth of tubes as being pleasant sounding, and tooby. The reality is that tubes are very linear amplifiers with excellent bandwidth, and the bulk of the added distortion and limited bandwidth attributed to them has to do with the topologies and the surrounding components used. Similarly, the myth of DAC digital glare probably has more to do with the opamps used in the IV than the DAC chips themselves.5 points
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Well to be fair, it was actually much darker than the picture shows and I had spent the last twenty minutes navigating through a fog of ganja smoke.3 points
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Had a weekend in Atlanta and got to hang with Colin and Justin and Purk. Had a few snacks. **BRENT**2 points
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I can definitely do a I/V converter with a discrete cfa amplifier with the current input directly feeding the emitters of a complementary input stge.2 points
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Not a bad Sunday. My standing table top group solved case 7 of Sherlock Holmes Consulting Detective, than then I puttered around on some projects at home. A nice cigar and a couple drinks post dinner, and now time for a good walk, and then some good ol' "TeeVee," when I get back home. I think I'll start watching the new season of The Americans.2 points
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I have a working II+. I pull it out every few years to play Microsoft Olympic Decathlon.2 points
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The ultimate DIY? Absolutely magnificent! Nascent Audio. Sounds promising.1 point
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Magnetic Fields are still on my list of bands I need to see live before I die. He always puts together a great ensemble and does interesting things with arrangements. Me: I finally saw one of my favourite discoveries from Prog magazine -- The Fierce and the Dead -- in their one American appearance. So glad I went, they are crazy tight, and phenomenal live. All four of them (two guitarists, drummer, and lead bassist) are superb musicians on their chosen instrument. I got to meet all four of them and their label runner, all lovely people. I've been in heaven all day, just like after the Hiromi show. Going to have to forego Slowdive though. 's'too bad, as the album is really good.1 point
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you could do a really nice tube output stage with 6c33. But you need 4 of them for balanced. Output impedance of 30 ohms. But that is way past goofy, at least 200 watts power consumption by the time you are done. And its huge. Or 10 tubes in parallel (40 tubes total) like the big Conrad Johnson preamp which also gets you under 50 ohms. The Conrad Johnson thing has the benefit of very low noise. you could do transformers and use the patent from audio precision to bias the transformer in such a way as to completely remove all second harmonics, you would be surprised at the amount of distortion that even the best low level transformers have. my favorite is a pure class A output stage.1 point
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I'm going bring Wachara's Orpheus Clone to the meet as well.1 point
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Dammit Colin Sent from my SAMSUNG-SM-G890A using Tapatalk1 point
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Second that. Some nice write-ups based on actual testing of different cable types, including USB: http://archimago.blogspot.se/2015/06/musings-audio-cables-summary-non.html Summed up; if your DAC is asynchronous (i.e. the computer is not doing the clocking), every cable which meets USB2.0 requirements will perform identically.1 point
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