Panel reference Global controls Gain Adjust the Channel EQ gain with this knob. This is useful for level-compensating when doing drastic boosts or cuts. Range: +/- 18.00 dB The signal level is shown in the meter. The Filter section The Filter section contains a 12 dB/octave low pass filter and an 18 dB/octave high pass filter. The parameters are as follows: HPF On Click the On button to activate the high pass filter. HPF Freq The High Pass filter (HPF) removes low frequencies from the signal, resulting in a thinner sound. The HP filter slope has a 18 dB/Octave roll-off. Set the desired cutoff frequency for the high pass filter. Range: 20 Hz - 4 kHz LPF On Click the On button to activate the low pass filter. LPF Freq The Low Pass filter (LPF) removes high frequencies from the signal, making the sound less bright. The LP filter has 12 dB/Octave roll-off curve. Set the desired cutoff frequency for the low pass filter. Range: 100 Hz - 20 kHz. The Equalizer section The Equalizer section features a four-band EQ with parametric midrange controls and high and low frequency shelving bands. The EQ can be switched between two operating modes, each with slightly different curve characteristics. The Equalizer has the following parameters: LF Gain The LF section provides low frequency shelving equalization. All frequencies below the set LF Frequency will be cut or boosted by the set LF Gain amount. Set the LF Gain/Attenuation amount. Range: +/- 20 dB LF Frequency Set the LF Frequency. Range: 40 Hz - 600 Hz LF Bell Click the LF Bell button to switch the LF EQ to peaking characteristics. This means it works like a regular parametric EQ band, cutting or boosting the signal around the set LF Frequency. Bell mode has a fixed bandwidth or "Q" value. LMF Gain The low medium frequency EQ is fully parametric. Set the LMF Gain/Attenuation amount. Range: +/- 20 dB LMF Frequency Set the LMF (center) Frequency. Range: 200 Hz - 2 kHz LMF Q The “Q” parameter adjusts the bandwidth around the set center LMF Frequency. The higher the Q value, the narrower the affected frequency range - except in “E” mode (see “E Mode”). Set the Q value for the LMF EQ. Range: 0.70 - 2.50 E Mode Click to switch to E Mode. When the E Mode button is activated the EQ will have slightly different curve characteristics. In normal mode (E button deactivated), the Gain setting will also affect the bandwidth (Q value) for the LMF and HMF EQs. The higher the Gain, the narrower the bandwidth and vice versa. With E Mode activated, the bandwidth is constant at all Gain settings. HMF Gain The high medium frequency EQ is fully parametric. Set the LMF Gain/Attenuation amount. Range: +/- 20 dB HMF Frequency Set the HMF (center) Frequency. Range: 600 Hz - 7 kHz HMF Q The “Q” parameter adjusts the bandwidth around the set center HMF Frequency. The higher the Q value, the narrower the affected frequency range - except in “E” mode (see “E Mode”). Set the Q value for the LMF EQ. Range: 0.70 - 2.50 HF Gain The HF section provides high frequency shelving equalization. Frequencies above the set corner Frequency will be cut or boosted by the set HF Gain amount. Set the HF Gain/Attenuation amount. Range: +/- 20 dB HF Frequency Set the HF Frequency. Range: 1.5 kHz - 22 kHz HF Bell Click the HF Bell button to switch the HF EQ to peaking characteristics. This means it works like a regular parametric EQ band, cutting or boosting the signal around the set HF Frequency. Bell mode has a fixed bandwidth or "Q" value.