A
DJUSTMENT PROCEDURE
3
Adjustment Procedure
1. Select the following as the supplied signal sources at each channel.
Final out level is affected by gain control, channel fader, group fader etc. Adjust gain control proper so as to
be balanced at each source under setting at "U" if gain is high or low, then, it is diffcult to adjust fader under
operating.
If channel will be used with microphone input.
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Don't depress the pad switch.
2. Adjust the each channel as the followings.
Turn the gain control all the way counterclockwise.
Turn the Aux sends (Aux 1~4) control all the way counterclockwise.
Don't depress E.Q switch
Don't depress 100Hz switch
Turn the panpot to the left or right
Turn the gain control to "U"
Depress PFL switch
Turn PFL/AFL gain control all the way clockwise
Connect the headphone plug into headphone jack
1. Minimize at feedback by adjustment of fixed direction and location speaker.
2. Adjust input fader according to procedure so as not to make howling.
3. Adjust mid EQ for reducing howling.
4. After marking of setting up for fader. And return to initial setting.
3. Adjust as the following after sending the signal into channel input.
If you turn the gain control switch to clockwise slowly. Input signals is are appeared at L/RMix meter
(Adjust the signal level to 0dB, then the signal LED will be lighten)
If you want equalizer, depress EQ switch.
After adjusting each EQ, turn the gain control to 0dB at meter again.
Depress PFL switch again.
4. Adjust GRP output as the following.
Depress the GRP switch at channel.
Depress the channel output switch(on switch).
Turn GRP fader up slowly then adjust to 0dB at meter (0dB=4dB/1.23V RMS).
Depress AFL switch in signal output GRP then, check output signal
(after checking it, depress the switch again).
5. If channel will be used with microphone. Select the following function .
Depressing 100Hz switch in vocal then, cut off the low pass filter.
Improve the clarity of sound through adjusting EQ.
6. Adjust the other input strip as the above.
If microphone will be used with phantom power.
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Connect Mic connector into the jack before depressing the phantom switch.
If channel will be used with key board line input.
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Depress the PAD switch or turn the gain control all the way counterclockwise.
IMPORTANT LEVEL SETTING
It is necessary to minimize howling, using the mic.
For the better sound without howling, we recommend using of JFS-142 to minimize howling due to
bandwidth of octave of MID peaking curve.
HOW TO MINIMIZE AT HOWLING
