so... i couldn't help but notice that among the headamp crowd the high end uses AC power supplies (the gilmore and the ppa, for example), yet in the speaker amplifier crowd, battery power is a method of highest approach reserved for uncompromising characters with deep pockets. what's the...

but another meta42 in the world. many thanks to tangent et al, the forum, the web, etc etc, for making a first electronics project easy. this one is populated with stock digikey and tangent parts. i simply selected what was better for an ac version, or better any time it was only a...

not having luck with Search, though i know it's in here. i've got a meta42 with ac power in a plastic case. SDS labs style psu with +15 -15 and ground. do i do anything with the ground tab in this config? nothing?

to quote the ever helpful tangent's site, "I recommend that you leave the current source out initially. The amp will work fine without it, and it's no more difficult to add it later. Also, some op-amps don't improve with a current source because they're internally biased to operate in class...

okay, this is a classic case of the eraser wearing out before the pencil, so i'd best ask for help. i'm looking at the circuit diagram for the SDS psu and its pcb. http://headwize2.powerpill.org/proje...stokes_prj.htm i'm trying to understand how the circuit relates to the legs of the...

i'm muddling my way through parts for a meta42. doing fairly well for the lost, thanks to headwize/head-fi/tangentsoft/et al, but i've run into a stumbling block with parts selection where the needed caps are obsolete, like C1 through C8 for the SDS psu. i'm fairly sure P4125-ND is the part...

i figure i'm missing a basic truth and hope someone will enlighten me. i want to make a simple switchbox that requires a single throw and six poles. i figured such a switch would likely be rotary for hardware simplicity, but since digikey only carries up to 4p, i now suspect i'm just asking the...

this morning Slashdot points to an article about electolytic capacitors made with an inferior water-based electolyte that are plaguing computer motherboards. http://www.ttiinc.com/MarketEye/zogb...s_20021014.asp would anyone here happen to know if this may include capacitors audio...

I've been reading the web for months. I'm going to start with a Gilmore class A amp. But I still need to find a good 101 level site. I've never messed with electronics before. Don't really know what I should do to 'hand match resistors' [I'm guessing, but I probably shouldn't]. Know what...