dsavitsk

Would be nice. The only one I know that will do the panelization is Olimex. But, they have started charging 5 EUR per design to do it. Plus, their panels are a little small for the price, and shipping takes forever -- I've waited 3 months for boards from them before. Most places won't allow you to do multiple designs on one board, even if it is within their space requirements and they don't have to do panelization, or depanelization. I've managed to put multiple designs on a single board with both Advanced and Imagineering, but both said they generally charge extra for doing so. Gold Phoenix is the only one I have found that is more laissez-faire about the whole thing. Though, they have started adding rules, and increasing prices lately, so it is not the deal it once was. Anyhow, for Eagle files, the Gerbmerge software is relatively easy to use.

Kevin, I get the following: Traceback (most recent call last): ... RuntimeError: File ./blackhole.cmp has uninterpretable line: M00* Probably not worth the effort to try to tack this down right now.

Thanks everyone! I ate too much for dinner, sat around until I was not quite so stuffed, then ate too many cupcakes.

The board outlne layer looks like it might be the sticking point, and I believe the panelization software needs it.

If you can put te Gerbes into the following format, I might be able to get it to work. *.drd = drills *.bor = board outline *.cmp = top copper *.sol = bottom copper *.plc = top silkscreen *.stc = top solder mask *.sts = bottom solder mask I am using Gerbmerge to do the panelization. Double, but single will work, too..

I am having some PCBs made, and I have a 3.5" x 3.9" spot left empty on the panel. If anyone has a small board they want made, and it will fit within that spot (that size or smaller), I am happy to add it. Board will be 2oz copper and RoHS if that matters. Cost is Free. The only complication is that I am sending the order in late Sunday, or possibly very early Monday, so I'd need the files before then. I guess the other complication is that if you did not do the board in Eagle, there is no guarantee it will work. We'll see.

Anyone know off the top of their head what the closest SMD equivalent of the FM's is?

AC currents move in a loop, so in a circuit where signal currents go through capacitors, it is worth considering what one uses in those spots. That means coupling, but is also means places like Rk bypasses in a grounded cathode stage, or "Ultrapath" caps, or certain types of power supplies. That said, many boutique caps, particularly electrolytics, are not really that good, or are just rebrandings of other things. Also, if you find youself needing lots of fancy parts as band-aids, it might be time to consider a better circuit -- topological improvements will make a bigger difference than parts upgrades (that is not a comment on the Dynahi or Sigma mentioned by the OP which should not need band-aids as they are great circuits). In this case, I'd agree to the OP to just use FMs (I've never liked FCs for whatever reason.) Here's a nice little write up: http://www.nutshellhifi.com/library/ETF.html

I lived in the building on the far right with the little round windows for a summer ... and I've stayed in the hotel peeking up (http://concoursehotel.com/hotel/)

The L-2 is a hybrid in the sense that it uses both tube and solid state parts in active roles. But, the term is typically used for something that uses a tube for voltage gain and a solid state buffer, which is not the topology used. In the case of the L-2, as Nate noted, the tube is used for both voltage and current. Solid state parts are used for rectifiers, voltage regulators, constant current sources, and biasing shunt regulators. In other words, the tubes do the work, but the solid state parts set the operating points. Also, the clear up a point, the output transformer has 32 and 300 ohm taps (labeled lo and hi on the front). The transformers have plenty of inductance such that any dynamic headphone should be fine -- you just choose the one that is closest. At the extreme, I found that with 600 ohm Beyers, it was helpful to put a 600 ohm resistor in parallel (to make a 300 ohm load) to make them sound their best (and the T1's did sound pretty good, b/t/w/ -- actually quite a nice combination) through they worked OK without. Gain into 32 ohm is actually a little less than 5 -- just a bit over 3. Into 300 ohms it is around 8. These can vary slightly with different tubes. Practical power limit is a little under 1/2W, though distortion will be pretty high at that point.

Happy Birthday!

There is a comment after the review looking for some L-2 measurements. I thought I'd post some here. These are taken via RMAA at ~125mW output, which is 2Vrms into 32 ohms. That is very very loud -- louder than anyone should ever listen. When the level is more resonable, much of that drops into the noise floor, so take these as worst case. At any rate, THD is ~0.14% and IMD is ~0.12%. (The 60Hz bump is in the soundcard.) THD: IMD:

Thanks Tyll, and Nate, for the great review. I am humbled.

The fact that Koss made something less comfortable is not an argument in favor of the LCD's.

Happy Birthday!

QFT

That's no fun. Some of the best money I ever spent was on an endodontist and getting a root canal done right. Nothing like the year of pain, and the pain of having the root canal that the regular dentist did redone.

That would be sea men.

This is basically what I do. I use small metal spacers between the second piece and the front plate to recess it even more.

400% more open ...

Happy Birthday!

powerpoint?

For most purposes, it doesn't matter. By the time you use one up, which is realistically at least several years, you'll be able to get a new one that is much larger and much cheaper, and probably faster.

The deals seemed to dry up as the day went on. I picked up a 256 for my X201, but I need the space for running a bunch of VMs.

Newegg is running a 24 hour sale on Crucial M4 SSDs. They are all ~$1/G