The Crossover block uses a combination of high-pass, low-pass, and band-pass filters to divide the audio frequency spectrum (20 Hz to 20,000 Hz) into distinct segments, or ranges, suitable for individual loudspeaker use. All-pass filters built into the Crossover block automatically phase compensate the outputs at the crossover points.
Add Delay to the output. The physical construction of multi-way loudspeaker cabinets often results in drivers being offset by some distance. This displacement means that audio at the crossover frequencies, being driven from adjacent but offset drivers, acoustically sum out of phase. Adding Delay to the output of the driver closer to the audience gives the audio from the further driver a chance to catch up, eliminating acoustic phase interference at the crossover frequencies. Sound travels approximately 13.5 inches per millisecond. So, the maximum output delay of 10 milliseconds could compensate for drivers that are as much as 11 feet apart.
UI Element | Purpose |
---|---|
Input node | Connection point for wiring input to the 2-way Mono Crossover block |
High node | Connection point for wiring the block's High output to another block |
Low node | Connection point for wiring the block's Low output to another block |
(Hover over the thumbnail below to view the properties dialog box.)
UI Element | Purpose |
---|---|
Response graph |
Graphical representation of filters. Use the brown handle to adjust the selected filter's frequency. |
Filter selection list | Select the filter to display and configure. |
Mode button | Displays the current configuration mode. The default mode is Simple, in which the frequency controls between pass-bands are linked, and all filters use the same Type/Order (alignment). Advanced mode allows you to independently set the cut-off frequencies and alignments (Type and Slope) of each band-pass filter. To change the mode, click this button. |
Frequency control | Displays the current frequency of the selected filter. Change the frequency by moving the slider or editing the frequency value in the edit box. |
Type and Slope/Order control | Displays the Type and Slope/Order (alignment) associated with the selected filter. To select a different option, click the down arrow and choose from the list that appears. |
Gain control | Set the relative levels of the Crossover block's outputs. |
Delay control | Add Delay to an output to eliminate acoustic phase interference at the crossover frequencies (in situations where the drivers in multi-way loudspeaker cabinets are offset by some distance). |
Invert | Compensate for reversed wiring on an amplifier or loudspeaker channel by checking this box to invert the output of any band. |
Mute control (beneath Invert) | Check this box to mute each output of the Crossover block independently while you characterize the frequency response of other drivers in the loudspeaker. |
Table View | Displays the settings for each filter. You can also mute an output by selecting its associated Mute checkbox. |
Mute All | Selecting this checkbox mutes all outputs. |