subsonicsaxx
Member
Hey everyone. I'm new on the boards but I've been reading a bunch of pm1k posts in preparation for my racking project (parts are in the mail!) You can pretty much assume I know almost nothing about electronics besides some basic theory I've read on allaboutcircuits.com. So, I have a couple of questions:
1- I've been looking at this page:
http://www.groupdiy.com/index.php?topic=7685
I liked the idea of the caps on the line input in order to isolate it from phantom power. I ran across one thread discussing ideal values of caps to use (which I have since been unable to find.) But, I couldn't find any discussion of how specifically to wire it up. Any thoughts/links to thoughts? (btw I will be using Neutrik switching combo jacks).
2- Does anyone know of a way to add an LED indicator to the phase invert switch without screwing with the signal? Ideally using a DPDT switch?
3- Has anyone had any experience with par-metal pre-cutting the rack faceplates? Like, especially as pertains to pricing? I've been messing around with Google SketchUp trying to get a design down and I'd like to avoid excessive metal cutting (using substandard tools) in my garage-less Brooklyn apartment.
4 (may not fit into the lab thread, but oh well)- I am missing some basic conceptual knowlege on how, exactly, electrical signal carries sonic information. Does anyone know of a good site that lays down how variations in direct current from +0A to +whatever get translated into a signal wave that has both positive and negative values over time? I am pretty sure this relates to AC theory somehow, but then how can this information be relayed by a DC circuit? Can one assume that more current in the signal path translates to higher amplitude of a sound wave, or does higher voltage do so? I am also trying to figure out why it is, exactly, that a capacitor filters certain frequencies. These all seem to be ideas that people on this board take for granted, but they're stumping the hell out of me! Any help with this, or just a link to some comprehensive info would be hugely appreciated.
1- I've been looking at this page:
http://www.groupdiy.com/index.php?topic=7685
I liked the idea of the caps on the line input in order to isolate it from phantom power. I ran across one thread discussing ideal values of caps to use (which I have since been unable to find.) But, I couldn't find any discussion of how specifically to wire it up. Any thoughts/links to thoughts? (btw I will be using Neutrik switching combo jacks).
2- Does anyone know of a way to add an LED indicator to the phase invert switch without screwing with the signal? Ideally using a DPDT switch?
3- Has anyone had any experience with par-metal pre-cutting the rack faceplates? Like, especially as pertains to pricing? I've been messing around with Google SketchUp trying to get a design down and I'd like to avoid excessive metal cutting (using substandard tools) in my garage-less Brooklyn apartment.
4 (may not fit into the lab thread, but oh well)- I am missing some basic conceptual knowlege on how, exactly, electrical signal carries sonic information. Does anyone know of a good site that lays down how variations in direct current from +0A to +whatever get translated into a signal wave that has both positive and negative values over time? I am pretty sure this relates to AC theory somehow, but then how can this information be relayed by a DC circuit? Can one assume that more current in the signal path translates to higher amplitude of a sound wave, or does higher voltage do so? I am also trying to figure out why it is, exactly, that a capacitor filters certain frequencies. These all seem to be ideas that people on this board take for granted, but they're stumping the hell out of me! Any help with this, or just a link to some comprehensive info would be hugely appreciated.