We ultimately had to buy a filter because my homebrew, effective as it was, did not have a UL sticker on it.
I was aware of audible issues just reliability. What kind of problems did the industry run into with the change over??
Rob
Tim, that says it all. You really don't get it, as regards to improving sound quality. To you, unless something hits you over the head with a big stick then it ain't real. So, distortion isn't distortion unless it's screaming at you, threatening to blow out your eardrums, the idea that that something can be obvious, like a rock band playing in a small club space with everything mic'ed up, playing through a PA system that's trying to break every piece of glass in the place, but other things can be subtle, seems to escape you.
Perhaps I was not clear - do you know what was the multiwave option? Yes, the killer is tin whiskers, very fine threadlike, crystalline growth of the tin metal. The photos of the stuff looks amazing, you wouldn't believe that metal would do things like this of its own accord. Grow far enough, bzzzzzzzzzz, lovely short circuit: bye, bye component ...
I've posted this here before: Tim may have a fantasy of what mains power looks like, going by textbooks, but this is the reality:
Ignore time, you mean? If you don't believe in strange behaviours, have a look: http://en.wikipedia.org/wiki/Tin_whiskersBack you went
And you don't get why that wouldn't work either: the very nature of an AB/X would preclude getting good results because the actual mechanism, setup of the equipment used to run the test interferes with the quality, the nature of what you're trying to measure, compare. This may seem strange to non-scientists, who may believe that test instruments and switching mechanisms have a miraculous ability to disappear from the scope of an experiment. But scientists and engineers who have to get real measurements, of real but subtle behaviours, have enormous problems getting meaningful results: they spend staggering sums of money, create bizarre test apparatus which would an OTT tweaked audiophile's fairy castle look like a child's toy in terms of the attention of detail gone into. Just to get a reading, or result, which is real: not something influenced by the way the person looked at it, nor an authoritive looking, but completely off the mark, number on an expensive HP device with lots of knobs on it.
Unfortunately I could hear it, over 25 years ago. That's what got me going in this game, way back then: no-one told me I should hear it; just that I would do something like reinserting a connection for some reason and I thought: "That's strange, the system is sounding a bit better just now, compared to what it was 10 seconds ago, what's going on?" It was as simple as that, and started the ball rolling, right up to now. Being intensely curious, and a pretty keen experimenter I kept on going with the business, trying everything to see if it made a difference, and blow me down, everything did!
I'm afraid it is no longer in production but a good DVD rewinder is indispensable.
Connect it to a power conditioner for best results...
