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Questions about microphone setup

post #1 of 3
Thread Starter 
So I currently have a dynamic mic plugged into my focusrite 2i4 interface and neither has an on/off switch. I use the 2i4 for audio playback as well, so I can't ever unplug it.

Is it hard on the interface to leave the gain knob turned up all the time? Right now I just turn the gain down to zero when I'm not using the mic, but it's a pain to have to turn it back up to just the right setting. This is just used for voice chat, so I have to mess with the gain multiple times per day. Is there a way to add a hardware on/off between the mic and interface? Even if that is possible, would it still be bad to leave the gain on the amp turned up all the time?
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post #2 of 3
I don't know, but it's possible that the gain knob works like a light dimmer, using variable resistance. As the resistance increases, the total gain drops and the heat in the resistor increases. If you turn the gain knob up, the heat in the resistor will drop, but more charge flows throughout the circuit, which will increase the heat there.

Either way, I really don't think the resistor or the rest of the circuit is in any danger of frying. (The 2i4 doesn't run hot.) It's probably more likely that you break the knob by turning it too much.
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post #3 of 3
Thread Starter 
Alright thanks, that sorta confirms my suspicions. It certainly doesn't heat up to any noticeable degree.
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AMD 1800X Asus X370 Crosshair VI MSI 1080 Ti Gaming X 32GB GSkill 3200 CL14 
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Windows 10 Pro Qnix 1440p IPS 96Hz NEC PA272 27" 1440p Leopold FC660C Topre 
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My System
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AMD 1800X Asus X370 Crosshair VI MSI 1080 Ti Gaming X 32GB GSkill 3200 CL14 
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Samsung 840 Pro Intel 730 WD RE3 Noctua DH-15 
OSMonitorMonitorKeyboard
Windows 10 Pro Qnix 1440p IPS 96Hz NEC PA272 27" 1440p Leopold FC660C Topre 
PowerCaseMouseAudio
EVGA 850W Supernova G2 Fractal Design Define R4 Logitech G502 ODAC + O2 
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