GelbeMusik
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- Apr 19, 2020
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... passive radiator will be a necessity. Tomorrow I'll optimize my BMR crossover ... see whether all these great measurements really make an audible difference.
The B/S400 I think was a design that reportedly exhibited some shaking, when driven hard. The rattling would not sound that good, so I expect two impulse-cancelling passives at opposing sides to be necessary.
Regarding listening tests, I expect the 50..60Hz region to be most critical. If You find some time and are interested too, a dedicated IM test would be nice.
Due to my own anecdotal experience the Doppler, which is Frequency Modulation could possibly transform into Amplitude Modulation in-room, making it more objectionable. Maybe because of the very rough sound-field in-room (before visual smoothing).
I also had the feeling, that the FM became quite unpleasant, when the sound wasn't just bass (e/g 60Hz) plus one single, modulated tone. A mix of a bass modulated tone, plus some other clean tone--from the midrange--could reveal more.
Thank You anyway.