■ HF Frequency Selector Switch
The HF Frequency Selector selects the frequency that is affected by the HF Knob. In the
up position, shelving begins at 16 kHz, when depressed, shelving starts at 8 kHz.
■ LF Knob
The LF knob provides 15 dB boost or cut starting at the frequency selected on the LF
Frequency selector switch.
■ LF Frequency Selector Switch
The LF Frequency Selector selects the frequency that is affected by the LF Knob. In the
up position, shelving begins at 120 Hz, when depressed, shelving starts at 60 Hz.
3.8.5 M/S Section
The M/S (Mono/Stereo) determines the Stereo mode of the Main path.
■ Pol Rev
Pressing Pol Rev reverses the polarity of the right channel of the main path to correct
out of phase stereo signals. When Pol Rev is depressed, the right channel is reversed.
■ Left/Right/Mono Buttons
The Left and Right buttons determines how the Main inputs appear in the Main path.
The following shows how the input is affected by the M/S switches:
Left and Right Up Normal Stereo (Left to Left, Right to Right)
Left Depressed only LEFT Input to both channels
Right Depressed only RIGHT Input to both channels
Left and Right Depressed Mono (Left and Right summed to both channels)
3.8.6 Main Path EQ
The Main path EQ is a 3 band EQ designed for program equalization. The Main path EQ
section also includes a High Pass Filter.
■ HF Knob
The HF knob provides 15 dB boost or cut starting at the frequency selected on the HF
Frequency selector switch.
■ HF Frequency Selector Switch
The HF Frequency Selector selects the frequency that is affected by the HF Knob. In the
up position, shelving begins at 16 kHz, when depressed, shelving starts at 8 kHz.
■ MF Knob
The MF knob provides 15 dB peak boost or cut starting at the frequency selected on
the MF Frequency selector switch.
■ MF Frequency Selector Switch
The MF Frequency Selector selects the frequency that is affected by the MF Knob. In the
up position, peak eq begins at 6 kHz, when depressed, shelving starts at 3 kHz
■ LF Knob
The LF knob provides 15 dB boost or cut starting at the frequency selected on the LF
Frequency selector switch.
■ LF Frequency Selector Switch
The LF Frequency Selector selects the frequency that is affected by the LF Knob. In the
up position, shelving begins at 120 Hz, when depressed, shelving starts at 60 Hz
■ High Pass Filter
The Main path filter is an 18 dB/oct. high pass filter with a 3 dB down point of 80 Hz.
Section 3 - Controls and Indicators
August 1999 3 - 39
STATUS 18R Operation and Maintenance Manual
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