User Manual

5
12
-HIGH
This is the treble control. You can use it to get rid of high frequency of human voice. The gain range goes from -15dB to +15dB with a centre frequency of 12kHz.
5.MONO
The level control knob sets the level of mono output signal, ranging from - to +10 dBu.
6.L/R LED METER
The LED meter indicate the level of input signal. Also a clipping indicator is supplied.
7.MASTER
This knob is used for adjusting the LINE output level. To avoid over amplification, it's recommended that this level be set properly. It is advisable that the gain be set to minimum when powering the system as well as shutting down as this can eliminate sudden signal burst to your system.
8.POWER SWITCH &LED INDICATOR
This switch controls to power on/off the unit. When the unit is switched on, the LED will light up. The unit is also provided a 24V DC backup power supply. Then the switch will control its on/off.
9.MOUNTING EAR
The mounting ear is adopted to easily install the unit on the rack.
10.AC INLET with FUSE HOLDER
This connector is meant for the connection of the supplied power cord. Please check the Voltage accepted by the unit and the Voltage available from AC sockets before connecting the unit to the Mains.
Some Final Tips on Wiring Configuration
You can connect unbalanced equipment to balanced inputs and outputs. Simply follow these schematics.
Strain Clamp
Sleeve
Tip
Ring
Sleeve=Ground/Screen
Ring=Right Signal
Tip=Left Signal
Use for Headphone
1/4" Stereo (TRS) Jack Plug
Strain Clamp
Sleeve
Tip
Sleeve=Ground/Screen
Tip=Signal
Use for Mono Line In, Mono 1/4"Jack Plugs
1/4" Mono (TS) Jack Plug
Strain Clamp
Sleeve
Tip
Ring
Sleeve=Ground/Screen
Ring=Return Signal
Tip=Send Signal
Use for Inserts Points
1/4" Stereo (TRS) Jack Plug
2=Hot(+)
3=Cold(-)
1=Ground/Screen
(seen from soldering side)
Use for Balanced Mic Inputs
(For unbalanced use, connect pin 1 to 3)
3-pin XLR Male Plug
2=Hot(+)
3=Cold(-)
1=Ground/Screen
Use for Main output
(For unbalanced use, leave pin 3 unconnected)
3-pin XLR Line Socket
(seen from soldering side)
1
2
3
1
2
3
REAR PANEL
10
12
11 13
14
15
16
17
18
19
PHPH PH PH PH PH
PROFESSIONAL MIXER PREAMPLIFIER
-MID
This is the midrange control. It provides -12dB to +12dB boost or cut with a centre frequency of 2.5kHz. It can affect most fundamental frequencies of all musical instruments and human voice.