31-May-2015, 13:57
Devialet announces 36 Hz without SAM for the B&W 683 S2, although B&W rates them at 30 Hz -6dB. On the other hand, they announce 17 Hz bass extension !
I did an experiment by playing a 20 Hz 0dbFS sine wave: the woofers move like they are going to come out the speaker (even at -25dB volume) but basically no sound/vibration is produced. I have to go up to 28 Hz and then the bass become really audible, and at the same time the woofer calm down significantly ! Very strange... Moreover, each time I turn the volume control, while playing the 20 Hz sound, a very weird digital noise is produced, including some "pops" and "ticks" which do not sound very good. Nothing like that happens when SAM is disabled.
Besides that, SAM works very well on most music with the 683 S2, but sometimes I have the feeling the woofers move too much compared to the playback volume/amount of bass produced. Looks like SAM is trying to make them reproduce frequencies they cannot...
I did an experiment by playing a 20 Hz 0dbFS sine wave: the woofers move like they are going to come out the speaker (even at -25dB volume) but basically no sound/vibration is produced. I have to go up to 28 Hz and then the bass become really audible, and at the same time the woofer calm down significantly ! Very strange... Moreover, each time I turn the volume control, while playing the 20 Hz sound, a very weird digital noise is produced, including some "pops" and "ticks" which do not sound very good. Nothing like that happens when SAM is disabled.
Besides that, SAM works very well on most music with the 683 S2, but sometimes I have the feeling the woofers move too much compared to the playback volume/amount of bass produced. Looks like SAM is trying to make them reproduce frequencies they cannot...
