ericn
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Balance Engineer
Posts: 16,083 
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Post by ericn on Jul 24, 2024 14:57:11 GMT -6
Got called out to help a friend with a problematic gig, it was a combination of PA / recording using a Midas M32 & Remote stage box. The problem was the LF hummm of the HVAC in every mic input, now if the stage box were to have analog filters before the AD we could have cleaned it up and retained our headroom, instead the Air conditioner ate all our headroom at the converters.
My question why can’t we have digitally controlled filters and a nice limiter on the stage box before we get to the digital world?
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Post by jaba on Jul 24, 2024 15:37:03 GMT -6
Amen.
I'm no expert in digital live consoles but is this normal or an example of "you get what you pay for"? Does for example, a high end Digico system also have the potential for this problem?
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ericn
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Balance Engineer
Posts: 16,083
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Post by ericn on Jul 24, 2024 15:50:25 GMT -6
Amen. I'm no expert in digital live consoles but is this normal or an example of "you get what you pay for"? Does for example, a high end Digico system also have the potential for this problem? From what I have seen they all do. Talking to friend who has worked for a couple of manufacturers on digital console projects, there is this attitude of “ it’s digital dude” vs let’s use analog where appropriate and digital where appropriate. It was even suggested to me that it could be done outboard, but then I don’t have control at FOH ! |
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Post by Dan on Jul 24, 2024 17:17:29 GMT -6
Amen. I'm no expert in digital live consoles but is this normal or an example of "you get what you pay for"? Does for example, a high end Digico system also have the potential for this problem? From what I have seen they all do. Talking to friend who has worked for a couple of manufacturers on digital console projects, there is this attitude of “ it’s digital dude” vs let’s use analog where appropriate and digital where appropriate. It was even suggested to me that it could be done outboard, but then I don’t have control at FOH ! Average digital console is crap compared to what's available itb. They don't even care to minimize zipper noise in the eqs by using a couple more instructions per filter and following best modern filter practice. Or even ramp the parameters like has been done since 90s for better stuff. Offer filters before the conversion? They're mostly using junk, they're not going to spend a buck for an analog filter on the preamps. |
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Post by ironinthepath on Jul 25, 2024 7:34:44 GMT -6
I’m just curious if this is hum induced electrically (60Hz, 120Hz) or acoustical hum from mics picking up HVAC.
If the first, it sounds like a ground loop somewhere. Is there stage gear on a different circuit than the mixer? All mics/signals are balanced? I’m just curious about how the hum is getting picked up.
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Post by Dan on Jul 25, 2024 8:35:23 GMT -6
Amen. I'm no expert in digital live consoles but is this normal or an example of "you get what you pay for"? Does for example, a high end Digico system also have the potential for this problem? From what I have seen they all do. Talking to friend who has worked for a couple of manufacturers on digital console projects, there is this attitude of “ it’s digital dude” vs let’s use analog where appropriate and digital where appropriate. It was even suggested to me that it could be done outboard, but then I don’t have control at FOH ! for Dante, need to get expensive remote Pres like focusrite mp8r or millennia hv316 with built in pre converter high pass filters, not behringer. Live sound guys love apologizing for Behringer and other garbage. Unfortunately, the remote control protocols are all usually proprietary and require a laptop to control. Live sound reinforcement usually sucks for amplified music. |
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