Choosing Associated Equipment; Operation; Bridged Operation - Cello PERFORMANCE AMPLIFIER II Owner's Manual

PERFORMANCE AMPLIFIER
Instructions (cont.)
The performance Amplifier can be used
as part of a complete Cello System, or
in conjunction with other speakers,
electronics, and cables.

CHOOSING ASSOCIATED EQUIPMENT

The following should be kept in mind:
1) Speakers should be of a design and
type capable of handling the extremely
high power levels produced by the
amplifier. This is especially important
if you plan to use the bridged amplifier
configuration.
2) Use only with preamplifiers having
protection against turn-on/turn off
thumps, surges or noises. All Cello
equipment uses muting circuits to
guard against such problems.
3) Make certain that units such as the CD,
tuner, tape and phono have no major
turn-on turn-off noises. If they do,
turn them on or off only while the
system is not operating.
4) Any failure of Cello equipment due to
the improper selection and operation
of related non-Cello components shall
void the warranty.
6

OPERATION

The Performance Amplifier is capable
of producing extremely high voltage
and current levels. Be sure to observe
standard precautions when operating.
The following steps are recommended.
1) Be sure all electrical connections are
correct. Triple check them.
2) Be certain that the terminal block
covers are installed. Do not run the
Performance Amplifier without these
covers in place.
3) Do not run power supply cables, AC
mains or audio cables under rugs or
sharp objects.
4) Turn peripheral source electronics on
first. Avoid switching these on or off
while amplifiers are in use.
5) Set volume controls on preamplifier
to minimum.
6) Turn amp supply switches on.
7) Bring the volume control up slowly
to the desired level. Use the amplifier
for musical enjoyment. Do not
overdrive to create distortion. The
Performance Amplifier is capable of
damaging loudspeakers if the volume
is up too high.
When you are through switch the
amps off first, before turning off the
peripheral equipment. Leaving the amps
on will not harm them, but be advised
that each unit draws approximately 400
watts at idle.
If physical damage has occurred to the
unit or it is exposed to water or other
liquids, do not use this device until proper
repairs and/or unit integrity tests have
been effected by authorized personnel.

BRIDGED OPERATION

One pair of Performance Amplifiers may
be used as a mono amplifier in bridged
mode. In this case, four times the power
is available. CAUTION: Bridged operation
should only be carried out with the recommen-
dation of the speaker manufacturer.
A bridging kit (part number
75-BRDG-00) is required to operate
Performance Amplifiers in the bridged
mode. The kit may be purchased from