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Recent content by Cesare

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    Flux removal from PCB

    Looks to be a water/alcohol mix with some surfactant, so basically record cleaning solution. I find straight IPA then actually soak up the resulting IPA with a paper cloth gets things to a pretty good state. Saying that, the sort of crud you discover under any surface mount components even...
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    Vintage computer fun

    Found a monitor that worked with the graphics card, found mouse, bought a period correct keyboard: Tried making some boot floppies without success, and can't find a suitably formatted hard disk in my collection, so some progress. I'll also need to spend some time sorting the plastics as they...
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    Air Fryer

    I still live in the dark ages, i've never owned a microwave, let alone an air fryer. The one gadget I have is a bread maker, which is one of those things that turns a boring task (making dough) into something that is basically effortless. My kitchen is however not really designed with the...
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    Audiophile songs you're sick of

    70s child here, and so my hifi purchasing in the late 80s from shops coincided with CDs, so there was lots of DSOTM, Dire Straits, and Phil Collins type stuff. I've been fairly free of the hifi shop experience since then, so i'm not sure I know what would be typical these days. Given it's an...
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    Vintage computer fun

    I thought i'd mention where I am with my Mac IIcx. I dismantled the power supply, and there was nothing particularly terrible going on, nothing obviously leaky, so I replaced the rifas, which had cracked after 35 years, which is fair enough: As I mentioned before, i found a battery, 30pin...
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    XLR or RCA!

    Hmm, I think that's taking an implementation detail you've seen and applying it everywhere and assuming that is the how it works. If you take a balanced connection and connect the hot to a single ended input, yes, you'll see half the voltage, hence 6db lower, but that's not the same as saying...
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    XLR or RCA!

    If you've spent any time around pro audio gear, microphones, consoles, active monitors, you know all about XLRs. They work, they are rugged, and they are a pain in the arse to solder. There's no magic though, it's just a bit of wire with some plugs on the end. There are also 5 pin XLRs, not very...
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    XLR or RCA!

    It's what you stick down the wire not what the connector is that matters.
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    PFM Help Sought: Choose my son's final eight...

    Just as a comment about how to whittle these down, i'd suggest he comes up with a title for each of them. If he does that, I think he'll find that the ones that are hard to describe will have less clear messages, and don't tell as much of a story. Maybe these are then not as 'strong' and don't...
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    Naim Pre Sonic Differentiation - Voicing of NAC52 (incl. NAC72 & NAC102)

    72/72 + boards and 82 here. I've not owned a 52. All of these amps use the same basic circuit, with the differences being related to how the power supplies are configured. It's therefore no surprise to find that changing power supplies is the main factor in the differences in performance, not...
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    Vintage computer fun

    His first episode is with a IIcx, so some content for me to trawl through, thanks for the tip!
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    Vintage computer fun

    On the subject of old computers, and macs is particular, i've just picked up a Mac IIcx, which was the first mac i owned (back in 1991). This one is broken, but the motherboard is in decent looking shape, so I suspect it's power supply issues. I've had a dig around in old boxes of useless bits...
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    Vintage computer fun

    Well apple did do this for a number of years, with the Duo Dock which was like a large VCR for your laptop, sitting under your office monitor with keyboard/mouse etc connected: https://apple.fandom.com/wiki/Duo_Dock It's an obvious idea, and i'm kind of surprised that there isn't really...
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    AI and human communication

    Training an AI involves a few steps, but they aren't exactly programming. First, build/collate a dataset which expresses the property that you would like the AI to learn. Let's say you want to feed images of cats and dogs to an AI, and have it tell you which is which. The dataset would be a set...


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