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SPEAKER TERMINALS
These terminals are offering a low voltage output of 8Ω (minimum load). 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 (minimum load) 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 (the power LED will
illuminate). Turn BASS and TREBLE controls to the 12 o'clock position (pointing straight up) and turn GAIN rotary control up
part way for testing.
•
Ensure a signal is being fed to one of the inputs and gradually increase the volume control for that channel until the output is
heard through the speakers. Turn up the GAIN to the maximum required volume level and reduce the channel volume
control if necessary.
Note:. The output of the amplifier is represented on the level meters in each zone.
•
If a microphone is connected, 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" (detect) the speakers, which can cause feedback (squealing or
howling noise).
In addition to channel and GAIN volume controls, there are BASS and TREBLE 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). Rotating the BASS
control clockwise boosts the low frequencies in the audio, whilst rotating it anticlockwise will cut these low frequencies.
Likewise, rotating the TREBLE control clockwise boosts the high frequencies in the audio, whilst rotating it anticlockwise will
cut these high frequencies. Adjust these controls to suit the type of audio signal or compensate for the room acoustics.
100V LINE SYSTEM
For 100V line systems, connect the amplifier to the first speaker in the system using double-insulated speaker wire which has
adequate current rating to handle the total output of the amplifier.
Connect the "100V" output terminal to the positive (+) connection of the speaker and "COM" output to the negative (-) connection
of the speaker. Connect further speakers in parallel to the first speaker with all positive terminals and connected together and all
negative terminals connected together as shown below.
A 100V line speaker system can comprise of many speakers connected together. The determining factor for how many speakers
can be used on a single amplifier is the power rating. For most purposes, it is advised to connect as many speakers as needed
with a combined wattage of no more than 90% of the amplifier's output power rating.
The terminals of a 100V speaker are connected to a transformer and in some cases, this transformer may be "tapped" for different
power ratings. These tapings can be used to adjust the wattage (and output volume) of each speaker in the system to help
achieve the ideal total power of the system for the amplifier.
MAXIMUM LOAD
The "single" speaker output can be loaded up to the maximum power rating of the amplifier, i.e. 240W, 360W or 480W depending
on the model.
The 100V zone outputs can be individually loaded to a maximum of 240W per zone, where the combined power cannot exceed
the maximum power rating, i.e. 240W, 360W or 480W depending on the model.
REPLACING THE FUSE
If the 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.
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