Quote:
| JohnM wrote:
I'm assuming you ran the soundcard calibration, which uses the analog connections. If you keep that cal file and use the SPDIF output you will be compensating for low freq roll-off in the analog output stage which is no longer there, hence the boosted displayed results there. If you have not run soundcard cal you will still see a boost (of half as much) at frequencies below the point the analog output's low feeq response starts to roll off. |
Ah, very interesting, i hadn't thought of that. It makes perfect sense that that might have something to do with it. I do seem to remember that the roll-off of the soundcard was actually small, but still...
Hmmm... could / should i try to do the soundcard calibration by running an output (such as "monitor") from the AVR into the soundcard's LINE IN? That would calibrate the whole "loop" ...?