Crossover Component

The Crossover Component divides the audio input signals into 2 to 6 frequency bands for distribution to the appropriate loudspeakers for each band. In the default mode, there is a low-pass filter on the lowest band, and a high-pass filter on the highest band. You can choose up to 4 band-pass filters between the highest and lowest band. Both the highest and lowest bands have the option to become band-pass filters. You can choose the Slope rates and filter types (Butterworth, Linkwitz-Riley, Bessel-Thomson, Chebyshev) for each filter in each band.

The Crossover Component is capable of up to 256 channels and 6 Bands. Refer to the Properties table below for complete capabilities. You can create and configure as many crossovers as you need.

Controls

Control	Function	Default/Range
Response - All	Turns the all individual band crossovers and slopes on and off.	On / Off
Response - Phase	Turns the phase graphic on or off.	Off / On
Invert	Inverts the polarity of the output signal for the associated band.	Normal/Inverted
Mute	Mutes the output for the associated band.	Off/On
Gain (dB)	Adjusts the output gain for the associated band.	Default = 0 Range = -100 to +20
Frequency (Hz)	Determines the frequency the band will start (high-pass) and stop (low-pass) passing the audio signal. The low-pass frequency of a band cannot be lower than the high-pass frequency of the same band - the high-pass frequency will automatically adjust lower.	Default = 1000 Range = 20 to 20000
Slope	Determines the rate of change of attenuation at the high-pass and low-pass frequencies of the band. The slope setting establishes the crossover region between two adjacent bands. The available Slope settings depend on the choice made in the Crossover Properties Max Slope.	Depends on Type
Type (dB / Octave)	The Type setting includes: Butterworth, Linkwitz-Riley, Bessel-Thomson, Chebyshev filters. You can select any combination of two of these filters for a band's high-pass and low-pass frequencies. When you choose Bessel-Thomson, you are given the option of various types of normalization.	Default for all = 48 Butterworth - Range = 6 to 60 Linkwitz-Riley - Range = 12 to 60 Bessel-Thomson Range = 6 to 60 Chebyshev - Range = 6 to 60
Bypass	The Bypass button is available only on the highest and lowest bands, and only when High-pass Low Band and Low-pass High Band options are chosen in the Crossover Properties. The Bypass button bypasses the high-pass filter for the lowest band, or the low-pass filter for the highest band. Basically, it makes it as if you had not selected the High-pass Low Band and Low-pass High Band options.	Off/On
Bessel Normalization	Selects the type of normalization for the High-pass and Low-pass Bessel-Thomson filter.	High-pass Natural Phase Match -3 dB Flat Group Delay -3 dB Mirror Magnitude Natural Mirror Magnitude Low-pass -3dB Cutoff Natural Cutoff
Link	The Link button links the high-pass frequency control of a band to the low-pass frequency control of the adjacent lower band. The two controls are synchronized, and controlled by the low-pass knob in the lower band. This makes it easier to keep two adjacent bands' crossover region in sync.	Off/On

Control

Function

Default/Range

Response - All

Turns the all individual band crossovers and slopes on and off.

On / Off

Response - Phase

Turns the phase graphic on or off.

Off / On

Invert

Inverts the polarity of the output signal for the associated band.

Normal/Inverted

Mute

Mutes the output for the associated band.

Off/On

Gain

(dB)

Adjusts the output gain for the associated band.

Default = 0

Range = -100 to +20

Frequency

(Hz)

Determines the frequency the band will start (high-pass) and stop (low-pass) passing the audio signal. The low-pass frequency of a band cannot be lower than the high-pass frequency of the same band - the high-pass frequency will automatically adjust lower.

Default = 1000

Range = 20 to 20000

Slope

Determines the rate of change of attenuation at the high-pass and low-pass frequencies of the band. The slope setting establishes the crossover region between two adjacent bands. The available Slope settings depend on the choice made in the Crossover Properties Max Slope.

Depends on Type

Type

(dB / Octave)

The Type setting includes: Butterworth, Linkwitz-Riley, Bessel-Thomson, Chebyshev filters. You can select any combination of two of these filters for a band's high-pass and low-pass frequencies. When you choose Bessel-Thomson, you are given the option of various types of normalization.

Default for all = 48

Butterworth - Range = 6 to 60

Linkwitz-Riley - Range = 12 to 60

Bessel-Thomson Range = 6 to 60

Chebyshev - Range = 6 to 60

Bypass

The Bypass button is available only on the highest and lowest bands, and only when High-pass Low Band and Low-pass High Band options are chosen in the Crossover Properties. The Bypass button bypasses the high-pass filter for the lowest band, or the low-pass filter for the highest band. Basically, it makes it as if you had not selected the High-pass Low Band and Low-pass High Band options.

Off/On

Bessel Normalization

Selects the type of normalization for the High-pass and Low-pass Bessel-Thomson filter.

High-pass

Natural Phase Match

-3 dB Flat Group Delay

-3 dB Mirror Magnitude

Natural Mirror Magnitude

Low-pass

-3dB Cutoff

Natural Cutoff

Link

The Link button links the high-pass frequency control of a band to the low-pass frequency control of the adjacent lower band. The two controls are synchronized, and controlled by the low-pass knob in the lower band. This makes it easier to keep two adjacent bands' crossover region in sync.

Off/On

Properties

Crossover Properties

Property	Function	Choices
Max Slope	Controls the maximum slope you can apply to a band. The Slope settings in the Control Panel are set by default with a range of 6 dB per octave, to 48 dB per octave.	12, 24, 36, 48, 60, 72, 84, 96 dB/Octave
Band Count	Band Count controls the number of frequency bands you have in the crossover component. For every input channel, there is one output channel for each band. For example, two input channels, four bands = eight output channels.	2 through 6-way
High-pass Low Band	Determines if the lowest band has a high-pass filter or not.	No / Yes
Low-pass High Band	Determines if the highest band has a low-pass filter or not.	No / Yes

Property

Function

Choices

Max Slope

Controls the maximum slope you can apply to a band. The Slope settings in the Control Panel are set by default with a range of 6 dB per octave, to 48 dB per octave.

12, 24, 36, 48, 60, 72, 84, 96

dB/Octave

Band Count

Band Count controls the number of frequency bands you have in the crossover component. For every input channel, there is one output channel for each band. For example, two input channels, four bands = eight output channels.

2 through 6-way

High-pass Low Band

Determines if the lowest band has a high-pass filter or not.

No / Yes

Low-pass High Band

Determines if the highest band has a low-pass filter or not.

No / Yes

Channels

Property	Function	Choices
Type	Determines the Crossover Component's channel type. NOTE: Stereo = two mono channels	Mono Stereo Multi-Channel
Count	Determines the number of channels for Multi-channel.	2 to 256

Property

Function

Choices

Type

Determines the Crossover Component's channel type.

NOTE: Stereo = two mono channels

Mono

Stereo

Multi-Channel

Count

Determines the number of channels for Multi-channel.

2 to 256

Response Panel

Property	Function	Choices
Enabled	Enables the graphical Response panel in the Control Panel	Yes / No
Size	Adjusts the size of the Response panel.	Small Medium Large

Property

Function

Choices

Enabled

Enables the graphical Response panel in the Control Panel

Yes / No

Size

Adjusts the size of the Response panel.

Small

Medium

Large

Control Pins

The available Control Pins depend on settings in Properties.

Each band in the Crossover can have High and Low settings. The following table lists the duplicated settings only once.

Pin Name	Value	String	Position	Pins Available
Gain	-100 to 20	-100 dB to 20 dB	0.000 to 1.00	Input / Output
Bypass	0 1	active bypass	0 1	Input / Output
High or Low Frequency	10.0 to 20,000	10 Hz to 20 kHz	0.000 to 1.00	Input / Output
High or Low Normalization	0 1 2 3	-3 dB Flat Group Delay -3 dB Mirror Magnitude Natural Mirror Magnitude Natural Phase Match	0 .333 .667 1.00	Input / Output
High or Low Slope	6.0 12.0 18.0 24.0 30.0 36.0 42.0 48.00 54.0 60.0 66.0 72.0 78.0 84.0 90.0 96.0	6 dB/Oct 12 dB/Oct 18 dB/Oct 24 dB/Oct 30 dB/Oct 36 dB/Oct 42 dB/Oct 48 dB/Oct 54 dB/Oct 60 dB/Oct 66 dB/Oct 72 dB/Oct 78 dB/Oct 84 dB/Oct 90 dB/Oct 96 dB/Oct	0.00 .067 .133 .200 .267 .333 .400 .467 .533 .600 .667 .733 .800 .867 .933 1.00	Input / Output
Type	2 3 4 5	Butterworth Linkwitz-Riley Bessel-Thomson Chebyshev	0 .333 .667 1.00	Input / Output
Band Invert	0 1	normal invert	0 1	Input / Output
Band Link	0 1	enable disable	0 1	Input / Output
Band Mute	0 1	unmute mute	0 1	Input / Output
Master Gain	-100 to 20	-100 dB to 20 dB	0.000 to 1.00	Input / Output
Master Invert	0 1	normal invert	0 1	Input / Output
Master Mute	0 1	unmute mute	0 1	Input / Output

Pin Name

Value

String

Position

Pins Available

Gain

-100 to 20

-100 dB to 20 dB

0.000 to 1.00

Input / Output

Bypass

active

bypass

Input / Output

High or Low Frequency

10.0 to 20,000

10 Hz to 20 kHz

0.000 to 1.00

Input / Output

High or Low Normalization

-3 dB Flat Group Delay

-3 dB Mirror Magnitude

Natural Mirror Magnitude

Natural Phase Match

.333

.667

1.00

Input / Output

High or Low Slope

6.0

12.0

18.0

24.0

30.0

36.0

42.0

48.00

54.0

60.0

66.0

72.0

78.0

84.0

90.0

96.0

6 dB/Oct

12 dB/Oct

18 dB/Oct

24 dB/Oct

30 dB/Oct

36 dB/Oct

42 dB/Oct

48 dB/Oct

54 dB/Oct

60 dB/Oct

66 dB/Oct

72 dB/Oct

78 dB/Oct

84 dB/Oct

90 dB/Oct

96 dB/Oct

0.00

.067

.133

.200

.267

.333

.400

.467

.533

.600

.667

.733

.800

.867

.933

1.00

Input / Output

Type

Butterworth

Linkwitz-Riley

Bessel-Thomson

Chebyshev

.333

.667

1.00

Input / Output

Band Invert

normal

invert

Input / Output

Band Link

enable

disable

Input / Output

Band Mute

unmute

mute

Input / Output

Master Gain

-100 to 20

-100 dB to 20 dB

0.000 to 1.00

Input / Output

Master Invert

normal

invert

Input / Output

Master Mute

unmute

mute

Input / Output

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