Tri-Vista Power Instructions for Use Page 6 of 9
AUDIO CONNECTIONS
Either of the two Tri-Vista Power ampli-
fiers can be used with a preamplifier or
line level source which has a volume con-
trol. We highly recommend the matching
Tri-Vista preamplifier available from
Musical Fidelity.
Connect the left and right audio outputs
from your pre-amplifiers to the RCA input
sockets on each of the two Tri-Vista power
amplifiers marked
INPUT
, using good
quality co-axial audio leads (not supplied).
LOUDSPEAKER CONNECTIONS
Using the accessory speaker leads supplied,
connect your loudspeakers to the terminals
on the back panel marked
SPEAKER
OUTPUTS
. Any of the three pairs of ter-
minals provided can be used. The wiring
must be “in phase”, namely, the
+
and
-
terminals connected to the left and right
speakers the same way round.
Warnings:
1:
The Tri-Vista Power amplifier has a
very large output capability. All input,
output and power connections must
therefore be reliable, and made with the
mains power switched OFF to prevent
possible damage to your loudspeakers.
2.
The negative (black) terminal is part of
a “bridged” circuit, and therefore has
live speaker output. It must not be con-
nected to any chassis or earth terminal.
Issue 1: March 2003
POWER CONNECTIONS
There are three accessory interconnection
leads supplied for each of the two
monobloc amplifiers, two leads for low
voltage and one thick armoured mains
cable. Connect one set of leads between
the power supply unit and the left channel
amplifier sockets, and the other set from the
power unit to the right amplifier sockets.
Left and right channel destinations must be
as shown by the panel socket markings.
Plug the two accessory IEC mains leads
into the rear panel sockets of the power
supply unit, then the other ends into con-
venient wall outlets.
BEFORE SWITCHING ON
. . . . .
Turn the volume control on your preampli-
fier to minimum, and switch on its power.
OPERATION
Press the
POWER
rocker switch on the
back panel of the power supply unit. A sin-
gle blue
PSU POWER
LED on the front
panel will light to confirm that power is
applied, but the system will not operate, as
control is now from the front panel.
To switch on, press the
ON
button on the
front panel. One amplifier will power up
first, then after a short delay the other chan-
nel, confirmed by left and right blue power
LEDs on the front panel.
LEDs in the feet of the amplifiers and
power supply will also light red for about
six seconds, indicating that all audio out-
puts are muted. Muting is then disabled,
and feet illumination fades over approxi-
mately fifteen seconds to amber, showing
that your Tri-Vista Power amplifiers are
now ready for use.
continued
. . .
CONNECTIONS and OPERATION
