It would really help if you could post some pics of two buf634s. The differences could just be from TI standardizing the silkscreen on burr brown chips after TI bought them.

did anyone get their money back? It looks like their website died.

But even by your arguement, there still shouldn't be a (audible) difference between the ladder and the series version, since, in both cases, the signal has to "push" through the same impedance.

Just wondering, what exactly causes resistors to color the noise? If its just thermal noise, won't the ladder and series give the same noise, since thermal noise depends on the resistance?

That won't exactly work, since then all 24 of your volume setting resistor pairs would be in parallel, producing a rather hard to drive load for your source.

Two six step attenuators. Going to use them in a ppa at some point.

NMR is cool. Where do you work?

and my parents tell me i will mature as i get older....

what you say does work, since increasing the value of R*C decreases the -3db point. however, when you increase the value of r2, its thermal nose goes up, so there's a bit of a tradeoff there. there's probably some sort of happy optimum, where the noise and bass roll-off are both tolerable, but...

It can be worked into an m^3, but it requires some planning, since theres only four holes you could mount it on.

if you flip that eqn, you get x = (1/a+1/b)^-1 = ab/(a+b) , or product over sum. I couldn't get rick's link to work, but wikipedia has the same thing under nomograph:

Does anyone here know anything about the company that makes kinatechnics vises? Google isn't saying much. All i could find was Marshall Group Kinatechnics 336 Los Coches St. Milpitas, CA 95035 (408) 942-4710 I need to get a new pair of jaw covers for my kinatechnics vise, so any help...

yeah. you're correct. the battery life will be the same (more or less) for two batteries or one battery. the current won't increase. it just goes through both batteries, and since their mAhr numbers havent changed, both batteries will die after the specified number of coloumbs have passed...

but the silmics look so pretty...

Has anyone gotten their RMA's yet?