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Fader Meter Behavior in PT8 and Fader Weights
Can someone explain to me a bit about setting the weight of the faders meters? I understand that it has to do with voltage (as once explained to me by O.G. Killa) but I don't think I have the proper equipment to calibrate correctly, and am not sure what the exact difference would be between
-18dbs & -16dbs and how that would effect the behavior of the fader Or the look of the meter? Are those my only 2 options as well -18 and -16? It seems like a free text field. Thanks D |
#2
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Re: Fader Meter Behavior in PT8 and Fader Weights
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#3
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Re: Fader Meter Behavior in PT8 and Fader Weights
It's got nothing to do with voltage as most digital meters measure relative to "digital full scale"...
__________________
Janne What we do in life, echoes in eternity. |
#4
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Re: Fader Meter Behavior in PT8 and Fader Weights
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Your "calibration reference level" on a digital meter is in reference to an analog voltage measured at the output of your interface. That's what Dr. Ford was alluding to. There was a big, heated discussion/debate about this over in the PTHD tips forum. There is also some confusion about it sometimes. For example, -15dBfs on a 002 will have the exact same analog output volume as a PTHD 192 IO (Using Trim A) at -18dBfs or a 192 IO (Using Trim B) at -20dBfs. Since +4dBu is used as the reference voltage level for most professional audio equipment, with a volt meter connected to the outputs of your interface a sine wave at a certain dBfs level should create an output voltage of 1.228 Volts (RMS). That Certain dBfs level on a 192 IO is -18dBfs using trim A, -20dBfs using trim B and I believe it's -15dBfs in a 002/003 (Maybe -14dBfs?). This way... if you are using a mixing console who's line inputs are calibrated for +4dBu = 0 VU, when a signal with a voltage of 1.228 Volts (RMS) comes into the mixer's line input the VU meter will read "0 VU". Then say you send your mix to a 1/2" analog tape machine which is also calibrated for +4dBu=0VU, when your mix bus meters are saying 0 VU, your tape machine meters will be saying 0 VU. And if you simultaneously split your mix to a DAT or CD recorder that is calibrated for +4dBu= [Some number] dBfs (for this example we'll say -18dBfs), when your mix bus on the console says 0VU and the meter on the tape machine says 0VU the meter on the CD player will read -18. And if your PTHD system is using it's factory Calibration of -18dBfs as well... the chain would look like this... PT -18dBFS (1.228volts) = 0 VU (1.228 volts) on console channel = 0VU (1.228 volts) on Console MixBus = 0VU (1.228 volts) on tape machine = -18dBfs (1.228 volts) in the CD recorder. The term "weight" of a fader's meters is something I have not heard of before... so I'm not sure how it relates to calibration and reference levels. |
#5
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Re: Fader Meter Behavior in PT8 and Fader Weights
Thanks OG, I will check where exactly it is and post tonight.
D |
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