manual

“ADVANCED” screen Chapter 4. System screen
MTX Editor User’s Manual
91
APF (All Pass Filter)
This filter passes the signals of the entire frequency range, affecting only the
phase. It is used mainly to correct the phase of the crossover region.
This is APF 1st. The phase will be rotated 90° at the specified frequency, and will
be rotated 0°–180° when seen over the entire frequency range. For APF 2nd, the
phase will be rotated 180° at the specified frequency, and will be rotated 0°–360°
when seen over the entire frequency range.
Horn EQ
A directional horn speaker is characterized by a high frequency level roll-off.
Horn EQ is an equalizer that compensates for this characteristic. For this reason,
Gain is restricted to 0 dB or higher and Freq. is restricted to 500 Hz or higher.
• [MUTE] button
Mutes the output.
• [Output Level] knob
Specifies the output level.
■ LIMITER
•[ON] button
Turns the limiter on/off. If the button is off, the limiter will be bypassed.
• Gain Reduction indicator
This will light when the threshold value is exceeded.
• [Threshold] knob
Specifies the threshold.
• [Attack]
Specifies the speed at which the limiter will take effect. If Manual is selected, a knob
is shown, allowing you to specify the setting in msec units. If Fast/Mid/Slow is
selected, the following settings will be made automatically according to the
crossover’s HPF cutoff frequency in the Speaker Processor settings.
Fast ....................................1/4 wavelength of the cutoff frequency
Mid ....................................1/2 wavelength of the cutoff frequency
Slow...................................1 wavelength of the cutoff frequency
•[Release]
Specifies the speed at which the limiter will release. If Manual is selected, a knob is
shown, allowing you to specify the setting in msec units. If Fast/Mid/Slow is selected,
the following settings will be made automatically according to the crossover’s HPF
cutoff frequency in the Speaker Processor settings.
Slow...................................4 wavelengths of the cutoff frequency
Mid ....................................8 wavelengths of the cutoff frequency
Slow...................................16 wavelengths of the cutoff frequency