Little tech questions from your day

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japmn wrote:A 150' coil of RG59/U Broadcast Video cable just fell into my lap. It looks almost just like guitar cable. I need to make a shit load of guitar cables and interconnects for 3 pedal boards. These are this cables specs:Nominal Capacitance = 16.5 pf/ftThis is well-shielded co-ax for RF distribution. In theory, it should work fine as a guitar cable since it is low capacitance, but my main worry would be flexibility and durability when bending. I assume it's solid core.

Little tech questions from your day

63
tbone wrote:eliya wrote:Alright so I bought an LCD monitor and it's pretty cool. It has analog and digital input, my card supports both, so I plugged in to the digital since I never done it before.What are the differences between the digital and analog source/outputs? Like, what are the main differences/benefits?Also, this monitor has a little buzz/hum, it's nothing too loud but I don't know if this is supposed to be like that, should I go back and replace it or save my time and use it?LCD monitors shouldn't have any kind of buzz/hum. Are there speakers built into it, and are they turned all the way up but is the audio cable on the monitor not plugged into anything? Otherwise it's probably bad.The LCD itself is noiseless, but LCD screens are usually backlit, and that's done with fluorescent lighting, which is very noisy, and on top of that, they usually have dimmable ballasts for the fluorescent, which is insanely noisy, as far as EMF is concerned.
"The bastards have landed"

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Little tech questions from your day

65
scott wrote:tbone wrote:eliya wrote:Alright so I bought an LCD monitor and it's pretty cool. It has analog and digital input, my card supports both, so I plugged in to the digital since I never done it before.What are the differences between the digital and analog source/outputs? Like, what are the main differences/benefits?Also, this monitor has a little buzz/hum, it's nothing too loud but I don't know if this is supposed to be like that, should I go back and replace it or save my time and use it?LCD monitors shouldn't have any kind of buzz/hum. Are there speakers built into it, and are they turned all the way up but is the audio cable on the monitor not plugged into anything? Otherwise it's probably bad.The LCD itself is noiseless, but LCD screens are usually backlit, and that's done with fluorescent lighting, which is very noisy, and on top of that, they usually have dimmable ballasts for the fluorescent, which is insanely noisy, as far as EMF is concerned.So it's ok that it's noisy?About the RF cable, isn't it a problem that it's impedance is 75 ohms?

Little tech questions from your day

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eliya wrote:About the RF cable, isn't it a problem that it's impedance is 75 ohms?It's own impedance isn't 75 Ohms. That was be specified per length and would be strange seeing as the cable has a copper core.It specifies what the destination impedance is, and is designed not to cause any issues working as a cable at RF frequencies for that given impedance.

Little tech questions from your day

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Lonesome Bulldog wrote:My question: proper angle of rim-mounted SM57s on toms?* Facing dead center, or??*I know I know, the correct answer is "in the rubbish"At risk of sounding like a dick, the proper angle is the one that you think sounds best.Generally, I start wit ha 57 about 3 inches above the rim and pointed toward halfway between rim and center. Then I move to taste.Ben

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