miniDSP Ltd, Hong Kong /
/ Features and specifications subject to change without prior notice
34
7
S
IGNAL
P
ROCESSING
B
LOCKS
7.1
C
ROSSOVER
Each output channel has independent high pass and low pass filters. Click on the
Xover
button to open the
crossover settings window:
Crossovers “split” the frequency band to send to different drivers. In a two-way loudspeaker, for example, a
low
pass
filter is used to remove high frequencies from the signal sent to the woofer, and a
high pass
filter is used to
remove low frequencies from the signal sent to the tweeter. In a three-way speaker, the midrange driver will
use both the high pass and low pass filters. Crossover filters can also be used to limit low frequency content
delivered to a speaker or subwoofer, to help protect it from over-excursion.
Unlike conventional analog crossovers, the flexibility of DSP allows a completely arbitrary mix of different filter
slopes and types. Filters can be set at any frequency, or disabled completely. This allows maximum flexibility in
matching your crossover to the acoustic characteristics of the loudspeaker drivers.
Crossover filters are displayed in two groups of four—channels 1 through 4, and channels 5 though 8. Each
group is configured by default as a four-way crossover. The current channel is displayed in orange, with the
other three in the group in grey.
Hovering the mouse over the curve brings up an overlay
showing the frequency and the attenuation at that frequency.