SONUS FABER LILIUM FLOOR-STANDING SPEAKERS $75,000 REVIEW

April 24, 2020 § Leave a comment

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“The impulse response also can be used to plot the step response, which shows when each driver becomes active in relation to the other driver(s) when the signal voltage is initially applied. Below is the step response of the Sonus faber Lilium. The first peak on the left side is the tweeter, followed 0.23 ms later by the midrange and woofers (the midrange and woofers are the same size – 7”, and their summed output is larger than the single tweeter peak). 2.3 ms after the midrange driver is the subwoofer driver, followed by 1.7 ms later by the passive radiator. So, between the tweeter and passive radiator, there is a 4.23 ms delay. This shows you cannot fight the laws of physics. The reason there is delay is that the cones for the larger drivers have more mass, and therefore, it takes more time to “get them moving” when the signal voltage is applied. However, even though the passive radiator cone is the same diameter (10″) as the subwoofer cone at 10”, the passive radiator has to respond to the subwoofer movement rather than the directly applied voltage. So, the voltage is applied to the subwoofer, it moves, causing air pressure to change in the enclosure, and that change in air pressure then causes the passive radiator cone to move. Frankly, I am surprised there is only 4.23 ms in between the tweeter and passive radiator. That is just 4.23 thousandths of a second.”

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