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CHANNEL CONTROL SECTION:
1. PEAK LED INDICATORS & TRIM CONTROL -
PEAK INDICATORS - These LED indicators will “light” when the input signal reaches 5dB below the
channel’s clipping point. If the LED “lights” more then usual, you should use the TRIM CONTROL to
decrease the input level of the channel. If this does not work, reduce the output level of the connected
source.
TRIM CONTROL - This adjustment is used to adjust the audio source signal input gain for a channel.
The best S/N and dynamic range balance will be reached if you adjust the TRIM CONTROL so that the
PEAK INDICATORS “light” occasionally.
Channel Sensitivity”
MIC input sensitivity is between +6dB and -50dB.
Line input sensitivity is between +14dB and -30dB.
The Mono/Stereo Combo input channel sensitivity is between +20dB and -20dB.
2. HPF (HIGH PASS FILTER) BUTTON - This button toggles the HPF (Hight Pass Filter) on or off. To
turn the HPF on press the button in. The HPF cuts frequencies below 75Hz.
3. EQUALIZER - Please see the chart below for the Max. Boost/Cut for each control.
CHANNEL HIGH CONTROL - This knob is used to adjust the high (treble) frequency levels of the channel.
Turning the knob in a counter-clockwise direction will decrease the amount of treble applied to a channel
signal, turning the knob in a clockwise direction will increase the amount of treble applied to a channel signal.
CHANNEL MID CONTROL - This knob is used to adjust the midrange levels of the channel. Turning
the knob in a counter-clockwise direction will decrease the amount of midrange applied to a channel
signal, turning the knob in a clockwise direction will increase the amount of midrange applied to a
channel signal.
CHANNEL LOW CONTROL - This knob is used to adjust the low frequency levels of the chan-
nel. Turning the knob in a counter-clockwise direction will decrease the amount of bass applied to a
channel signal, turning the knob in a clockwise direction will increase the amount of bass applied to a
channel signal.
4. AUX CONTROLS - The AUX knobs control the signal level that the channel sends to AUX bus.
5. PRE/POST BUTTON - This button determines if the AUX signal is Pre Fader (signal level is not
affected by fader position) or Post Fader (signnal level is affected by the fader position).
6. EFX CONTROL - These knobs control the signal levels sent to the EFX bus. The channel signals
mixed by this bus have their overall level set by the MASTER EFX SEND control to the EFX jack located
on the front top panel. Since the control is place after the channel fader, the signal level will be
affected by the channel fader’s setting.
NOTE: The Effect bus signal is also fed into the internal DSP (digital signal processor).
M1624FX CHANNEL CONTROLS AND FUNCTIONS cont.
©American Audio® - www.americanaudio.us - M1624FX Instruction Manual Page 9
CONTROL
MAX.
BOOST/CUT
FREQUENCY TYPE
HIGH ±15dB 12kHz Shelving
MID ±12dB 2.5kHz Peaking
LOW ±15dB 80Hz Shelving