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Discussion Starter #1 (Edited)
iam a bit confused.
Today i started calibrating my new Tascam US-122mkII:
See Screenshot below and the text on the Left:
Sample rate: 44100 Hz
-3 dB points: 17,5 Hz,  21,126 kHz
Input device: Eingang (TASCAM US-122 MKII)
Input: No input selected
Channel: Left
Input volume: no control
Input RMS target: -18,0 dB
Actual RMS at 1 kHz: -17,8 dB
Output device: Lautsprecher (TASCAM US-122 MKII)
Output: No output selected
Sweep level: -18,0 dB
20 Hz .. 20 kHz flatness: +0,0, -2,5 dB
I've seen measurements with this soundcard with much lower -3db point.
Like this: http://www.hometheatershack.com/for...t-soundcard-calibration-run-2.html#post441249

Whats wrong with my Tascam or the calibration process?

Edit: The second Picture shows a 1hz - 22khz 1M measurement with the Loopbackcable.
That one looks like i have expected. I dont know if that helps.


Premium Member
6,711 Posts
The first and second pics look like they are showing the same thing, just with a different vertical scale so the second looks flatter but would be the same with the same scale.

Do you have the Tascam input switch on mic/line (not guitar)?

Although the roll-off starts a little earlier than other plots it is still perfectly OK to use.

5 Posts
Discussion Starter #3
But look at this one: http://www.hometheatershack.com/for...t-soundcard-calibration-run-2.html#post441249

He is using the same Soundcard but bis -3db Point is around 4hz not 20hz like mine?
Can i ignore that?

Iam using the Left Channel but the Switch is set to Mic/Line
Mono Switch is "On" (Iam not sure if this is correct? )
Mon/Mix all the way to Computer
Input L all the way to Mic
And Phones/Line Out at about 70%
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