4
SPEAKER TERMINALS
These terminals are offering a low voltage output of 8Ω. A 100V commercial output is also available.
Please note that one wire only should be connected to COM screw and one wire to the selected impedance or voltage.
ATTENTION: Multiple combinations cannot be done at the output level.
Two different types of connections are provided. The low impedance section: 8Ω is designed for a small amount of speakers to
be connected to your amplifier. The 100V section is especially designed for a multiple speaker distribution. When using the
100V output, speakers have to be equipped with a 100V transformer. The maximum amount of speakers to be placed on your
distribution line is in relation to the power allocated to each speaker. The total wattage set on the secondary side of the
transformers on your speaker line must not exceed the maximum RMS output power of the device. Failure to respect this may
cause permanent damage to the amplifier.
OPERATION STEPS
• When all connections to the amplifier are made, turn all rotary controls down and switch on the power and the power
button LED will illuminate. Turn BASS and TREBLE controls to the 12 o’clock position (pointing straight up) and turn
MASTER rotary control up part way for testing.
• Ensure a signal is being fed to one of the line inputs and gradually increase the volume control for that channel until the
output is heard through the speakers. Turn up the MASTER to the maximum required volume level and reduce the channel
volume control if necessary.
• Note: The initial test can be made using the built-in USB/SD audio player. The output of the amplifier is represented on the
level meter LEDs and care should be taken that the Red “0” LED is only lit momentarily during use. Anything longer than a
short flash of this LED may be indicating distortion or clipping of the output signal and the MASTER should be turned
down.
• If a microphone is connected to MIC1 input, make sure it is switched on and if it requires phantom power, make sure this
feature is enabled. Gradually increase its volume control whilst speaking into the microphone until the required volume
level is reached. The microphone should not be able to “hear” the speakers, which can cause feedback (squealing or
howling noise).
In addition to channel and MASTER volume controls, there are BASS and TREBLE EQ controls to adjust the tone of the overall
output. At the 12 o’clock position, these controls are applying no effect to the signal (no boost or cut). Moving the BASS control
clockwise boosts the low frequencies in the audio, whilst moving it anticlockwise will cut these low frequencies. Likewise,
moving the TREBLE control clockwise boosts the high frequencies in the audio, whilst moving it anticlockwise will cut these high
frequencies. Adjust these EQ controls to suit the type of audio signal or compensate for the room acoustics.
REPLACING THE FUSES
If a fuse is defective, replace the fuse with a fuse of the same type and value. Before replacing the fuse, unplug mains lead.
Procedure: Step 1: Open the fuse holder on the rear panel with a fitting screwdriver.
Step 2: Remove the old fuse from the fuse holder.
Step 3: Install the new fuse in the fuse holder.
Step 4: Replace the fuse holder in the housing.
