Miklo
New Head-Fier
- Joined
- Jan 1, 2016
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Line Input
Line input uses Burr-Brown PCM4220 ADC, supporting audio recording of up to 24-bit/192kHz in Direct mode, and up to 24-bit/96kHz in DSP mode. The same AD converter chip as the one used in high-end audio interface TASCAM UH-7000. From my observation, it seems there is a +6 dB adjustable input gain at the line input. Frankly, I didn't expect this, as I prefer to have line input that is directly goes to ADC input without additional input gain.
Standard unbalanced line input maximum input voltage is 2 Vrms. SB X7 line input can only take 2 Vrms without clipping when the input volume is set to 50%. At 100% input volume, maximum input voltage is only 1 Vrms. I guess the extra 6 dB input gain is to accommodate some low output sources. Anyway, what's important is the sound quality.
OP,
So if I already have a high output going into the Line Input, then wouldn't I set the line input to 0? I don't understand what you mean by +6db. So if I have vocals recording from a high end preamp at 45db, then going into the X7 line in, it will be raised to 51db? Then anytime the line in volume is boosted in the mixer panel, will that also raise the input DB or just the output DB? At 50% what does that mean? It's sending 50% of my 45db signal to my DAW?
Also, do we know what the ADC specs are for the Mic In in front? Cfreative states the 123adc is for the line in on back, no specs given for the front mic line in.
Thanks for the clarification.