The D3V features four EQ bands, two of which are linked to the “Position” and “Room” switches.
The “Desk” switch targets two specific frequency ranges:
the lower midrange, to reduce unwanted resonances caused by reflections from the desk surface,
and the upper midrange, to smooth out slightly harsh high frequencies.
Below are the detailed values for each filter setting:
Position
Filter type: Low Shelf
Corner frequency: 400 Hz
Cut: 0 dB, -3 dB, -6 dB
Q: 0.707
Desk
Small
Filter type: Bell Filter
Center frequencies: 300 Hz and 2000 Hz
Cuts: -3 dB and -2 dB
Q: 1 and 2
Large
Filter type: Bell EQ
Center frequencies: 200 Hz and 1500 Hz
Cuts: -6 dB and -4 dB
Q: 2 and 2.5
Room
Filter type: High Shelf
Corner frequency: 6500 Hz
Cut: 0 dB, -1.5 dB, -3 dB
Q: 0.707