Magura

I don't know... Maybe you should buy a UV and X-ray camera/scanner/whatever - just to be on the safe side :buehehe:Nice toy!

Does having access to an X-ray scanner count? Yeah, it's good fun, and quite educative as well. You catch a mismatched differential pair within seconds, without as much as touching the circuit Magura

Hey it supports grayscale too, I just figured that you guys would get an easier time if it is in colors.See, we aim to please Magura

As you all know, the one with the most toys wins So I figured I would give myself a thermal camera for my birthday. Today it was in the mail, so I fired up the Donuts as they represent the most interesting image at hand.It turns out that the Donuts actually works as expected, everything is within approx. 1 degree C.Magura

So, another 1500km can't make much of a difference? Magura

Ohh, how nice to see Vladimir in vacation mode.....and a nice little present Next time you're in this end of the world, you gotta drop by us up here in Denmark.Magura

That's a fact, but as this could be a project for somebody with a less relaxed attitude towards that kind of stuff, I just wanted to point out that if the project was made for those voltages, there would be options.Those whom stray away from the beaten path, most likely also have an idea about the consequences (counting out Helicopter-boy that is).Magura

Well, if she goes on a diet for a year or two, she may even turn out to be a relatively good looking woman How about making this amp usable on -12V and +24V ? That would sort out a problem that sure will arise, as they don't like the power transformer any place near the inductors.12 and 24V SMPS at 150W is quite cheap and common, and does not sport that issue.Magura

I guess that's right, at least from what I've heard.I've done so years ago with a couple of BOSOZ modules, it works rather well actually. Sometime in the future I will do so with a bunch of Drek modules. Magura

No, no, no, no, and no Now that you have finally begun having interest in real amps, you could as well make a real input selector for the pre section.You just build as many pre stages as you need inputs, and just one psu. Hook up one pre section to each input, and power the one you need. When you wanna switch input, you simply switch the power on, to the respective input section, and power down the one that you used previously. This way you get rid of relays / switches in the signal path, and we both know that sooner or later they're gonna cause trouble. Don't forget to divide the reference to ground, or you will get into trouble.Magura

What a beautiful woman Magura

I just saw your "twin" thread at big Diya. It's gonna be fun to see if anybody there has the balls to actually build one.Regarding Eagle......you know I can deal with it, so it has to be a walk in the park Magura / whom soon will be served pancakes

The servo will make the life of future builders somewhat easier. Thermal compensation may also be worth consideration.Magura

So??? It's time to power up the lathe my friend Magura

Then why so high DCR ? 4R7 seems like a lot. ...But then again, you also don't need 0.9H, so you could loose some turns and loose some DCR in the process Magura

For a super low power Donut, I would think such a transformer is close to ideal, as that would have been my second choice, if I had not made air core donuts instead. The only drawback I came think of, would be loads of heat generation, if you some day wake up, and feel like having a few W of power.How big are they? Magura

It could be worth a shot.For sure you should build the servo version. I am still wondering what was going on with mine. A servo would sure cure any sort of problem in that regard.Magura

I would think 0.9H is plenty, why should it not be so?Looks interesting, are you for once actually going to build one for yourself? Magura

You know Choky, someday you just might get around to actually build this thing Magura

Well, Metaldanske has figured that he may have to deal with the fact, that he needs to find a different place to store those magnets.I can make the speaker do 20Hz....that's all very impressive. What I can't make it do, is pass 25Hz or so on the way. Looses total control of the cone. Now why is that?Because some phucker has blocked half the horn with magnets Magura

So, what you're suggesting is that for the cone for the FR driver, I simply make a negative cast of Mrs. Magura? That would be quite a good sales argument Magura

Ahem......I for one do Magura

Are we talking boobs or speakers here? :cheers:Magura

Those drivers sure are real nice.What do you plan to do with them?Magura

Leonardo,That reference is almost the same as a price list. Whatever that guy smokes, he ought to quit.Magura

I could make such, if you care to arrange a group buy....as some around here already knows, I'm no fan of handling GB's :cheers:Never the less, I could sure make such, if the need is bigger than 4 pcs.Magura