Re: Tascam DR-680 specifications again

["Raimund" animalsounds]

"But that begs the question - why include a block diagram of the signal flow if 
it doesn't accurately reflect the design of the recorder?"

Hi Paul,

In order to figure that out, I just ran a quick test with the low cut set to 
120 Hz and recorded a 10 to 400 Hz sine sweep signal at two different recording 
levels::

http://www.avisoft.com/scratch/DR-680 sweep.wav
http://www.avisoft.com/scratch/DR-680 sweep clipped.wav

If the filter was located in the analog section in front of the ADC, then there 
should be no distortion at the lower frequencies below the cut-off frequency. 
However, it can be seen that sine signal is indeed distorted at those lower 
frequencies, where the recorder itself did not indicate any clipping. So, the 
block diagram is obviously correct.

Tascam obviously chose that less than optimal design in order drop the price of 
the unit...

Cheers,
Raimund