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- Feb 19, 2013
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Ok, so then is it just a case of doing some maths to work out what 85db is?
ideally you'd set 200mv in a resistor of the value of the IEM, or with the IEM itself, because the voltage unloaded might not be exactly the same loaded. but in my case in practice it's often a small variation and it didn't really impact the results on what I tried(but then again I haven't tried that meany gears).
now what I warned you about before and seemed like it was poorly explained(as always ^_^), try to find a device where the maxed out voltage is known, and check that you read the right value with a 1khz tone on your multimeter(or at least close by, again the specs might not be unloaded). and if not try a lower frequency tone.
If you just want to monitor your DAP listening levels you don't need the Veritas. The mutimeter does the job if your IEM was already measured by innerfidelity.
If you just want to monitor your DAP listening levels you don't need the Veritas. The mutimeter does the job if your IEM was already measured by innerfidelity.
there is no certainty that when your multimeter writes 0.2v, that's really the output. because basically a cheap multimeter expects mostly to measure 50 or 60hz in your house electrical system as AC voltage. so instead of just trusting what you read, you should try to check with a known source of known voltage. maybe ask on the topic of some of your amps if somebody who knows what he's doing can check the max output so that you have that reference.
sure but the original purpose is to calibrate the veritas to make IEM measurements and get a proper idea of the set loudness on the graph. the veritas is only there in what I explain to enter the calibrated value into REW.
I'd recommend a different way to make sure that your multimeter will measure correctly at 1 kHz.
Just go here: http://www.audiocheck.net/audiofrequencysignalgenerator_sinetone.php
Generate three different tones:
- 50 Hz, 0dBFS, 10s
- 60 Hz, 0dBFS, 10s
- 1000 Hz, 0dBFS, 10s
Play all three tones. If you get the same voltage reading with every tone your good to go.
I'd recommend a different way to make sure that your multimeter will measure correctly at 1 kHz.
Just go here: http://www.audiocheck.net/audiofrequencysignalgenerator_sinetone.php
Generate three different tones:
- 50 Hz, 0dBFS, 10s
- 60 Hz, 0dBFS, 10s
- 1000 Hz, 0dBFS, 10s
Play all three tones. If you get the same voltage reading with every tone your good to go.
that's exactly what I was explaining from the start in a very long and overly complicated way!!!!