10, 12, 12MTK User Manual
5.1.1: MONO INPUT CONTROLS
CHANNEL CONTROLS > MONO INPUT CONTROLS
5.1.1: MONO INPUT CONTROLS
HPF 100Hz
Activate the High Pass Filter
The High Pass Filter (HPF) is an 18dB/Octave filter that attenuates frequencies below 100Hz. This can be useful for
filtering out low 'rumble' from microphones affected by extremely low traffic noise, air flow, and so on.
USB RTN (12 MTK only)
Enable the USB Return function
When active, the audio on USB channel 'n' (where 'n' is the console channel number) will replace the analogue
inputs post-gain (pre HPF / EQ) and the analogue audio path will be broken. Please see section 7 for more details.
HF
Adjust the boost/attenuation of the high frequency shelving filter
The HF shelving filter has a fixed frequency of 12kHz. Frequencies above this will be boosted or attenuated
depending on the control setting. With this Sapphyre asymmetric EQ, there is a small boost at the filter frequency
on cut and a small cut on boost. See section 1.02 for more detail.
MF Level
Adjust the boost/attenuation of the MF bell-type filter
This will adjust the gain or attenuation of the audio band centred according to the MF Frequency. This is an
asymmetric EQ, so boost has a wide bandwidth (low Q), and cut has a narrow bandwidth (High Q). See section
1.0.2 for more detail.
MF Frequency
Adjust the centre frequency of the mid-range filter
The Signature mid-range EQ band has a bell-type, semi-parametric filter. This control adjusts the centre frequency
of that bell between 140Hz (approximately C3) and 3kHz (approximately F#7).
