kevin gilmore

So this is the time of the year from thanksgiving to new years where i have the time to do extraordinary projects. This year is no exception. So i delivered the hydrogen torch preamp prototype to a person in chicago that happens to own a ctc blowtorch with great success. (hearafter just refered to as just hydrogen)(a hydrogen torch is at least twice the temperature of a blowtorch) But this year i wanted to do something extremely over the top just for me. And while it is not done yet, enough of it is done for a couple of pictures. So I hereby present the $5000 hammer. (in fact its going to cost way more than that) http://gilmore.chem.northwestern.edu/hammer1.jpg http://gilmore.chem.northwestern.edu/hammer2.jpg Handle and head machined from a solid piece of titanium. Handle drilled out for perfect balance. Standard taper on the handle. Shown with 24k gold and phosphor bronze hammerheads. Also shown with black and white delrin and stainless steel replacement hammerheads. Still have to finish the pure platinum, pure silver, lead, copper and lignum vitae hammerheads. As well as the (probably burlwood) wood insert for the presentation case. Going shopping tomorrow for the burlwood. Still don't have enough rhodium to make a hammerhead (or anything else) and research safety has decided that i will not be allowed to machine up the chunk of beryllium that i have due to possible exposure to beryllium dust. I'm almost done making a chunk of my very own damascus steel, which i'm going to machine into a chisel that goes with the hammer. Maybe at the next meet in chicago i'll bring it along and attempt a couple of love taps to the extremely hard head of my good friend ray. Happy holidays.

koss esp950's are bass heavy with low bias. Best sound is about 620 volts of bias. And they can play very loud.

You can make the 6.8k resistor a 10k pot, that should give you more than enough range.

Raising one voltage does you no good. You have to raise both of them. If you replace the 2sa1156's with 2sa1413's then you can get to +/-550 Or if you replace the 2sa1156's with 2sa1968's you can probably get to +/-700

If you are going to try DHT's, you are going to have to have 4 completely seperate filament power supplys. Reason, 50 volts of audio on the cathode and opposite in phase with the other tube in the same channel.

Actually there are 2 ways. You do it, or you get someone to do it for you. The 3d21's would definitely work in a BH. But really they want to be run at 1kv+ and then you have to put current sources in series or otherwise they smoke.

I'm pretty sure i tried kt77's at one point, the skinny bottle versions should be a complete identical replacement. (I think, don't really remember) el360's are virtually impossible to find, and when you do they are chinese junk and the top cap likes to come off. kt88's, 6l6's and things like that seem a bit ratty when you run them all the way to 800 volts.

More than willing to hire 3 people. Its two of the three i can't find.

wanna bet?? Been looking for over a year now. I could just give in and take the next piece of trash that shows up, but the people above me would stop it anyway. Real money is involved as in 75 million a year. Goverment cost accounting standards. Gets messy if an idiot makes a mess out of everything.

Bingo. Also need someone that can do sql all day long.

Call it what it is. The generation Y types who were taught that you can never fail, and you are the only one who matters, and who want it NOW. Hold on to your hats, because it is going to get worse. Much worse. I've been interviewing for IT types. All i'm getting is gen Y idiots. People who have never written a single line of code, yet want a starting salary of $100k plus 5 weeks of vacation plus flex time plus plus plus. I've put these candidates in front of a machine with visual studio on it, and told them to make the one line C program "hello world". Not a single person has been able to do it yet. Give me a fucking break.

They did not loose money on the amplifier. Although the R&D to do that stupid multi output switcher in a box that size was not trivial either. Fact is the electronic parts inside the he90 including the circuit boards were of very low quality. The onboard bitstream dac was even worse. Justin's amp sounds better, is quieter and better built than the original. I own one, i should know. They ate it bigtime on the headphones. Special machinery to make the ultra thin glass stators. More special machinery to etch the holes in the glass. Even more machinery including very large vacuum chambers to put the conductive film on the stators. For a world wide total of less than 100 units. 20 to 30 of which never left the factory. These days for a company like Sharp or Samsung who is making the same kind of stuff for lcd panels this would be a slam dunk. On the otherhand Sharp just spent 5 billion on a new plant in mexico to make and coat the glass so the setup costs are not cheap.

Yes but where would be the fun in that. More than half the parts would not be needed. And yes i'm waiting on fets, but may have a different solution to that problem anyway soon.

Its the pumpkin preamp has output capacitors. Yuuch preamp does not have dual balanced differential input. Yuuch Does not do so well with unbalanced inputs. Many people will think that this is excellent, which it is. Power supply extremely excessive in the style of john curl. Lightyears ahead of anything ray samuels could ever come up with.

Actually my opinion is a bit different. You had a tube preamp, and a levinson solid state amp, so the tube preamp takes the edge off of what many consider to be a slightly dark amplifier. Overall still a glorious combo. Depending on what headphones you settle on, you would be much better off with an extreme, or anything similar because the first gain stage tube is most like the gain stage in your old tube preamp.

Would there be any interest in a preamp with a sound signature very close to the CTC blowtorch??? For about $5k (wild estimate) Fully balanced, with unbalanced inputs that get converted to balanced before the 512 step constant impedance relay attenuator (.25db steps), remote controlled and with adjustable balance. Fully solid state. Cause i'm working on one... Design almost done...

stax already went out of business once due to stupidity. Sennheiser is a very large company and has been swallowing up other companies in a bid to own much of the professional world. Neumann and B&K. Even so, with the current management, they are not likely to produce anything again when they know they can't make a profit at it. The he90 amp design comes from the late 1950's and was never patented and was not sennheiser's to begin with.

aerius, you are but an amateur. http://gilmore.chem.northwestern.edu/workarea1.jpg http://gilmore.chem.northwestern.edu/workarea2.jpg I have since cleaned up, as i moved offices, it will look like this again in a year or so.

The head3 design is all solid state with the apex chips. The NE-2's are actually better because they are significantly stiffer. But then the rest of the thing is highly boring, as only 8 tubes are visible, and no pretty glow lamps.

http://www.vwrsp.com/catalog/product/index.cgi?catalog_number=EM1.02584.1000&inE=1&highlight=EM1.02584.1000

That is why you can only take 500mg every 4 hours. The container has all sorts of warnings on it. Picture on monday. If you take 2 grams at one shot you are likely dead in 20 minutes. Powerful stuff.

I have a LARGE bottle of pharmacy grade caffeine that i'm willing to donate to the cause. (About 2lbs left in a 5lb cannister) Maximum safe dose is 500mg every 4 hours. 2.5 grams per day. I could ship enough to make sure jude stays awake for at least 2 more weeks...

There are 2560p projectors also available. (about $125k plus lens) http://bssc.sel.sony.com/BroadcastandBusiness/DisplayModel?m=10007&p=12&sp=96&id=85495 There is one of these on demo at abtelectronics on a 20 foot screen with all the room lights on. Very impressive. 8 inch exhaust tube for the massive amount of heat generated. used in the high end digital movie theaters, with massive hard disks downloaded off of highly encrypted satellite feeds. Double D5 resolution. There is only one camera that can record this, and it is still shipping in beta versions only (about $80k with lens) http://www.red.com/cameras I can't see any new consumer standard in 20 years or more that is going to be better than 1080p.

Liquid crystal on silicon. Also known as reflective lcd (as opposed to transmissive). Sony and JVC are the only ones currently doing this. Sony has both front projectors (vw50,vw60,vw100,vw200) and single piece rear projectors. JVC just released the RS2 which is a front projector. JVC stopped making a single piece rear projector last year. Absoutely fabulous pictures. The front projectors require continuous tweeking to maintain perfect picture. Shading, gamma, and adjustment of the 1/4 wave plates. i made a lot of money writing software that does this automatically. So i'm pretty picky when it comes to making things absolutely perfect. Still in addition to light bulbs these things really do deteriorate over time, and really are not able to be made perfect after about 5 to 6 years. By which time they are worth absolutely nothing anyway. And issues with dust are still a big problem.

That is no way to do low impedance headphones, with one winding completely unterminated. Needs to be wired with a switch that puts both secondaries in parallel for low impedance phones.