• Provide adequate ventilation. Do not operate on carpet or any other surface that
might block air flow. The chassis will become warm in normal use!
• Do not allow the chassis to touch any metal parts, such as the frame of an equipment
rack. This might create a parallel ground path that could degrade the sound of your system.
• Input connection is via single ended RCA jacks or XLR jacks (which can be from
balanced or unbalanced sources).
• Connect the input and speaker cables.
• Connect the power cables from the power supply to the power amplifier.
• Connect the power supply to the power source indicated on the voltage selector
card (visible by the main fuse), either 115 or 230 volts AC. The voltage may be select by
means of the removable selector card located behind the fuse in the power connectors.
Remove the cards and reinstall so that the desired voltage may be read; be certain to
change the fuse to the correct value. Connect the power supply to the power source
indicated on the rear panel. Avoid power conditioners that float the ground pin. ALWAYS
connect power cord to component before plugging it into an AC outlet, and make sure
that unit's power switch is set to the "OFF" position before making the final connection. For
best performance, try to route the power cord away from signal cables.
• Power requirements are approximately 380 watts per channel. Pay close attention to
power quality, and be aware that different power cords can alter the sound.
• Set the output impedance switch to either “4 ohm” or “8 ohm” to suit your
loudspeaker. Connect the speaker cables: the black lead goes to “-“, the red lead goes
to “+”. For further information see Tips : Impedance Matching.
• Select the appropiate sensitivity of the input via the “Gain” swithch. It has 3 positions:
- H – high gain – to be used with preamplifiers with very low output impedance
capable to drive 600Om loads and provide 2V undistorted in it.
- M – medium gain – moderate input impedance matching most equipment it
needs 4V well within the capabilities of most preamplifiers.
- L – low gain – to be used with some tube preamplifiers with higher than usual
output impedance it would need to deliver 8V for full power. See Tips: Input gain
• Set the input type switch to XLR or RCA, to match the source and cables.
WARNING: Do not allow anything to touch the tubes in normal operation - they become
very hot. Take care to keep everyone, especially children and pets, from being able to
reach and touch the tubes, which become extremely hot and may cause serious injury.
Never touch a tube if the glass is broken. The internal structures carry high voltage and
could present a serious, possibly lethal shock. If a tube breaks, unplug the amplifier and
wait 30 minutes, then remove the tube. Keep flammable objects away from the amplifier.
INSTALLATION
6
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