kevin gilmore

I would probably not go back to everest, lots of other places to try. froggy's in highwood is right off the train station, and definitely does lunch M-F http://www.froggysrestaurant.com/location goosefoot is on my list of stuff to do soon.

Well if you really want to stretch the budget there is always Everest or Alinea

le france closed years ago. carlos closed in january, replaced by high end burger thing. le-titi is closing in june. not much high end french left these days in chicago.

1 or two for me please

I'll take a couple of those adapter boards, i have a bunch of those pots...

That is the alpha pot. Very nice actually and of reasonable size.

Yep, that one is virtually done too. I've been spending time on other stuff, but the prototype definitely works. And works well.

Unfortuantely i have cleaned out the local binny's of all cask strength rye and bourbon. At least till they restock next month.

Kerry still messing with the multi amp I'm waiting on hopefully final preamp boards

I was trying to keep it a secret. That way i never age. Thanks for the good wishes.

The first one is easy. The blind mounting thing I use, make the flange Part a bit thicker, and maybe a bit bigger in diameter Drill a blind hole in it, but in a spring and a small ball Then machine indents on the face panel or an additional Blind piece. You could do the same sort of thing on the shaft directly on the inside. For the lock you need something similar to The ten turn locking knobs Or a setscrew behind the spring if doing it on the inside.

You proably don't want to do that. 700 volts on tubes that should take no more than 450v. But the voltage gain is similar, so if the tubes don't arc, it would work.

rmaa is not the problem, it is the people who use it, especially with 16 bit sound cards, then don't set the levels correctly. If you have an 18 bit or better a/d and you set the input level at -3db, then adjust the gain of the amplifier under test to the equivalent -3db, then the numbers are at least close to equipment that sets the gain automatically. But if you set the levels at -10db or worse, on a 14 bit a/d, then you get silly readings.

unless you are mikhail in which case 800 volts is no problem.

Just wait till he releases his threatened "timex vs rolex" article. I have no idea whats in the pile of diatribe, but i'm sure there are going to be lots and lots of pissed off people. Something continues to tell me that since he thinks the benchmark is the best thing since sliced bread, he probably had something to do with it, possibly working as a consultant to them. Very few people would pay retail price for something like a dscope, and those that would probably would buy the audioprecision. at least he does not sand off the numbers on the chips. So one could probably reverse engineer the thing in a few minutes. And lay out a compatible board in a couple of hours. The issue would be the availibility of the chips. Since he is all about extremely low distortion numbers et all, you know that he is going to rip nelson a new one, because most of his amps are in the .05% to .1% thd range.

Well... If you have a high impedance source, and a low impedance pot (say 10k or less) you can loose a few db even at maximum volume.

Andy built one, and so did I. Maybe a few others that i don't know about.

There is a better way to make output transformers. Just like Mcintosh did on their 150 and 300 watt tube amps way back when. A total of 4 output windings, bifilar wound with the primary. In this case, lets say each winding was designed for 120 ohms. All 4 windings in parallel, and you have 30 ohms. 2 windings in series in parallel with the other 2 windings and you have 120 ohms. All 4 in series and you have 480 ohms. Perfect for all the popular headphones out there, no resistor loading needed.

The new dynahi is balanced only. Its the only way to do supersymmetry. You can actually use one side to ground, but that is not the point.

opa445 can handle up to +/- 45 volts for the 7815 you jumper pins 1 and 3 for the 7915 you jumper pins 2 and 3

Thats a lil-knight thing. I do like the bipolar thatcorp 340 as the input device instead of the jfets so maybe i'll do a version of the board for that. Its definitely sweet on the multiamp. Until linear systems pulls their fucking heads out of their fucking asses.

Last group buy board. Labeled as dynahi version 1.0 copyright 2004,2011

You have to jumper across the regulators

You are really going to like the new supersymmetry balanced dynahi, and the multiamp (multiple feedback option balanced dynalo) Both stuffable with currently available parts.

Correct. I have tested the plastic on the 4686a (collector to sheet of metal underneith it, bolted tight) to about 2kv before breakdown. You can put the aluminum oxide insulator in, but it adds unnecessary thermal resistance and you don't need the voltage protection.