Leaderboard

So I got my birthday present from the wife today.. or I guess I should say it arrived. I don't get to wear it until the actual day a month from today. I wanted something fun for the water park, beach and boating this summer. I'm also originally from Chicago so bears colors as a bonus. She is at work so a quick fitting, pic and into the safe with it for now.

Quick Update: Fixed the issue. Not 100% sure what the issue was, tightened up all connections and changed out the XLR leads, and working fine now. Internal shot of the amp included if anyone is interested. Internal signal wiring is Teflon insulated silver (bought a bunch years ago at a surplus store). Custom PCB for the attenuator and 3D printed brackets for the switching and attenuator. Cheers

At 43.5, a bit larger than I like.

Test Tone @ Home live right now: http://mixlr.com/illuminator/chat

https://www.npr.org/2019/05/09/721067718/first-listen-brad-mehldau-finding-gabriel First listen of Brad's album.

Friday date garb.

Just bought a japanese hifi magazine issued back in 1995. It has the great omega+T2 combo on its cover with four pages of technical info of the t2. A nice collector's item under $20.

Yes you can. As I mention above, when laying out boards this can be exploited to ensure better signal routing.

Very interesting. I had not noticed until now. I have reviewed some J74 of my inventory (including a Linear Systems LSJ74) with several transistor testers and S and D appear reversed as well. Edit: If they are all symmetrical, could you connect them to the opposite?

It is very difficult to find any explicit data on asymmetrical JFETs, other than that they are rare and used mainly in high RF work or similar specialised applications. I think is is almost certain that the ones we typically use in audio are symmetrical.

That’s because it’s a JFET. Most (all?) are symmetrical.

MSI great. Just make sure you submit the warranty card.

Same same. I even referenced Wild Kingdom once when I caught an arc of guys staring at CGAW's ass (or so it seemed). "Here, we see the female administratorus databasus in her natural element. She lures the males into believing her submissiveness with her diminutive form, but we all know who wields the power here. One of the males approaches, attempting to curry favour with a showing of his mastery of language...let's watch." RIP the real deal.

I got the try on the new Santos. That bracelet feels amazing. The blue dial is black in some light, it's a really nice effect. The skeleton one is super cool looking but the premium is too much imo.

Santos in gold with an gator band is hard to go wrong with! I had a Baume et Mercier Hampton, a rectangular watch though an automatic. I liked it a lot. I sold it for more than I bought it for.

Test Tone @ Home live right now: http://mixlr.com/illuminator/chat

The whole capacitor thing is interesting. Back in the day I developed a supermarket security gate to detect product tags and hence shoplifting, which for a few years was in use globally. This used two audio frequencies superimposed on a 20Hz triangle wave. The amp was class D (quite something for thirty-odd years ago) and hence needed an output filter. Designed one, and bought the bits - chunky inductor, and polypropylene capacitors. First thing was that the inductor melted, and that was when I found out about proximity effect. The second thing was that the capacitors howled like a banshee being tortured with a hot poker. Anyway the capacitor thing was really interesting. I tried a variety of manufacturers, and found that acoustic output was determined by tight winding of the foils. Second that axial tubular ones were quieter than radials. That was down to the manufacturing process for the radials. First the foil is wound on a cylindrical former. The former is pulled out and what remains is squashed flat. The voids that are inevitably left cause the noise through electrostatic forces. The quietest were cylindrical audio capacitors - a design now made by Kimber. Far too expensive for the product of course. But I found Roderstein axial ones that were also silent and cost much less. Roderstein is now owned by Vishay. Anyway, it was an interesting exercise. As far as I know no-one tests audio grade caps by passing an audio band signal through them (of an amp or so) and listening to them. Any acoustic output is (a) frequency dependent and associated with mechanical resonance in the capacitor structure and (b) is clearly associated with a loss mechanism. Aha - found a few left over - they were MKP1845, and Vishay still make them https://www.vishay.com/docs/26023/mkp1845.pdf . Just E6 values, which is a pain.