kevin gilmore

you think that is some bad soldering, look at this one, the lastest SP disaster http://gilmore.chem.northwestern.edu/raffy3.jpg Not even sure how you get cold solder blobs like that.

precision automation is such a wonderful thing... http://gilmore.chem.northwestern.edu/ampbars.jpg That is enough for 4 amplifiers, left another 8 at work, on monday the same thing except 10 inches for the power supplies... Heatsinks will be in house in about 3 weeks, program already written and tested on a hunk of wax... Then the front/back panels after that, then the circuit board order. Top and bottom panels are a no brainer.

how about some of these specifically designed for O2's SIEVEKING SOUND OMEGA HEADPHONE STAND (ZEBRANO) - elusivedisc Dr. wood, i know you can do a better job.

So the size of the RK50 dictates positioning too. Its actually perfect flush mount for the noval's, and the octal will be .230 high, and i'll make .250 rings. Or maybe plates, ray style luvdunhill, what is the thickness of the ceramics you have (need to be .09 id) and .25 long. and do you have 600 of them that you want to sell?

The transformers just arrived http://gilmore.chem.northwestern.edu/transformers.jpg precision machined mounting bracket behind them.

look at the pictures again... the pins on the noval aren't anywhere near long enough. If i make the holes real big for the octals i can push them thru to the threads and gain another .12 inch.

what to do? http://gilmore.chem.northwestern.edu/sockets.jpg If i make the octal sockets flush with the top of the amplifier then the 9 pin sockets are .23 inches below the top of the amplifier? If i make the 9 pin sockets flush with the top of the amp, then i have to make the holes for the octals bigger and they stick up .23 inches? Or push them both thru the top and make different sized tube rings? any suggestions... would rather not machine up some tube rings..

they say that it IS for counterfeit prevention. Evidently very hard to print those things.

The 4 input tubes are actually 2 x 6sn7's and are twin triodes. However the original circuit was 2 x 12ax7's which have more gain. Fact is that as shown the amp just barely has enough gain to work. In fact its a good idea to change out the 1500 ohm resistor to 1k ohm to bump up the gain a bit. If you do replace the front end with 12ax7's then you need to lower the B+ to that section because 400 or 450 is too much. There is another power supply in the T2 that would be great for 300 volts...

Feel free to lay out the board as you see fit. If yours is better, i'll make that one instead. hot off the presses... http://gilmore.chem.northwestern.edu/singlehoures1fix2.pdf

let me be slightly more specific. something like the old vampire right angle single rca jacks, circuit board mount. justin's are not right angle.. The connex one is the only one currently available, and it is way to long, i.e. i have to mount it 1 inch back from the circuit board edge to get it to fit the backpanel. The cardas is even longer as a dual.

I just hate it when good quality parts are no longer available. I'm looking for (a regularly stocked item) pcb mount rca jacks. (not those 99 cent pieces of shit) tiffany style like on the older krell stuff. or cardas gfca style. vampire rca connectors no longer in stock anywhere... neither are the gold neutriks. otherwise its going to stay XLR only, and you can buy the neutrik rca to XLR converters. The stock T2 supply is not RCRC. In fact its just diode bridge into capacitors...(balancing resistors and discharge resistors don't count) An ES1 amplifier section is 8 tubes, 36 resistors, 4 GOOD capacitors, 8 pots, 4 cathode capacitors... (yep thats it)

DIY ES1/2 coming Same chassis(s) Same power supply as the T2 except 2 of the supplies are unpopulated. Rigged as +400, -400 and -450. Quad filaments. And REAL bias supply. Amp board would be trivial for anyone to build as there are virtually no parts other than the 8 tubes. Still going to be the connex sockets however... So you guys want autographed... How about micro engraving? http://gilmore.chem.northwestern.edu/num.jpg thats a .002 diameter carbide bit plowing .003 into polished stainless. (thats about 50x) (i love my new eyes...)

solid titanium knobs will be about $100.

Not a joke. But i don't expect anyone to buy one either. I have enough gold in stock for 3 knobs, and enough platinum in stock for one. But i do like the idea of making knobs out of titanium. Looks like you made it out of sterling, except that it does not tarnish.

At this rate there may be more of these than the originals... I'm starting to adjust the position of parts to make sure it is easy to build. The dynafet is much harder to stuff...

Board sets will be available seperately.

Whats funny is that in the late 1970's B&O produced speakers that needed at least 100 watts to drive properly, and those were the connectors on the end of a 16 gauge cable.

The MLB is giving away these cards at the local jewel (grocery store) this is at 20x http://gilmore.chem.northwestern.edu/bob1.jpg notice the thing in the star... this is at 250x http://gilmore.chem.northwestern.edu/bob6.jpg printed holograms... The second hologram is .007mm in diameter

The biggest thing is to make sure you don't over voltage any of the resistors. There are parts of the circuit that have 4 resistors in series to make sure you can handle killovolt swings. The original used a lot of surface mount resistors that could handle only 250 volts each. If you use the standard rn60's they are good for more than 450 volts each.

This is why i'm doing just the pieces for which there will be no argument. Although the jury is still out on powder coating vs hard anodizing. or having my friend that owns an audi approved (aluminum) body shop put a few layers of paint on it. That is how wilson audio gets those kind of finishes... Spies Hecker black is one of my all times favorites.

That is how it is wired. Just checked the real circuit board pictures to make sure. Figure on about $4k in parts total including an RK50. If you are creative, you might be able to save a couple hundred in parts.

yup. That was back when those 2sc3381's were about 50 cents each. unless you know the right place to buy them from, go and check the bdent pricing. Way stupid.

I was joking. We have seen some of the magic cables produced by some of the whacked out cable manufacturers. One of which fills their cable with conductive crap. With 800 volts inside the cable, stuff like this is probably not a good idea. Neither is accidentally wiring the cable wrong and getting one of the high voltage lines switched with a low voltage line. Instant and very serious kaboom. You think these people are actually going to test their cables ?? Are they going to get a real cable to copy from... The filament lines are different sized wires from the high voltage lines. Will they know. Would they even care?

icarium x 2 sets of heatsinks.