User Manual
4
13
CONTROL ELEMENTS
1.MIC INPUT VOLUME KNOBS
MIC channel 1 would have priority over other MIC input channels. This functions can be disabled by
adjusting the MIC priority knob at the back of the unit.
Adjustment of high gain may distort the original signal but too low may cause insufficient signal.
Trim each channel individually by fixing the main output to a certain level while turning off other
channels. Repeat this step and mark the level at each knob to avoid constant sound setup.
The rotary knobs for microphone inputs 1 to 6, 7/8, 9/10,11/12 are for adjustment of input signal
levels. In setup, adjust this gain to the optimum level according to the required output level.
Different channel may have different input source(ie:condenser or dynamic MIC, etc)
2.SIGNAL LED
The presence of the input signal is indicated at this LED. The strength of input signal shall determine
the brightness of the LED indicators.
3. MIC CONTROL KNOBMIC/LINE SWITCHABLE BUTTON&
The button is used for selecting the MIC out or LINE out. When the
button is pressed, only CH1-CH6 have output from MIC out, MIC
LINE out has no output(this function is used for monitoring the
MIC out from CH1-CH6). When the button is released, all out have signal output except MIC out.
volume knob is activated(at
present the MIC1 has no priority). The volume can be adjusted by rotating the knob to increase/
decrease the MIC output level. But
MIC / LINE SWITCHABLE
-LOW
This is the bass control. It is used to boost male voice, kick-drum or bass guitar. Your system
will sound much bigger than what it is. The gain range goes from -15dB to +15dB with a centre
frequency of 80Hz.
The pre amplifier is equipped with 3-band mid sweep EQ: LOW, MID & HIGH.
4. EQUALIZER
Sleeve=Ground/Screen
Tip=Signal
Sleeve=Ground/Screen
Ring=Return Signal (Connected together)
To Channel Insert
To Tape or FX Input
'Tapped' Connection Direct Output Lead
(Enables the Insert to be used as a Direct Output
while maintaining the channel signal flow)
Sleeve
Sleeve=Ground/Screen
Ring=Return Signal
Tip=Send Signal
To Channel Insert
To Processor Input
To Processor Output
Ring
Tip
Y-Stereo lead for insert Connection
(To be used when the processor does not employ a
single jack connection for the In/Out Connections)
FRONT PANEL
1
2 3
6
5
4
7
8
9
CH 2CH 2 CH 3CH 3 CH 4CH 4 CH 5CH 5
CH 6CH 6 CH 7/8CH 7/8 CH 9/10CH 9/10 CH 11/12CH 11/12
SIG
ON
OFF
CH 1
CH 1
0 10 0 10 0 10 0 10 0 10 0 10 0 10 0 10 0 10 0 10 0 100 10
L R
CLIP
+10
0
SIG
0
-10
+10
0
-10
+10
+10
0
-10
+10
+10
HIGHMIDLOWLOW
SIG SIG SIG SIG SIG SIG SIG SIG
SPA-12
MIXER
PREAMPLIFIER
MIXER
PREAMPLIFIER
OUT OUTOUTOUT
MIC INMIC IN STEREO INSTEREO IN MIC EQ MONOMONO MASTERMASTER
ON
OFF
PROFESSIONAL MIXER PREAMPLIFIER