Audio Valve Challenger Owners manual

INSTRUCTION

manual

for

CHALLENGER

MONO POWER AMPLIFIER

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This handcrafted product was special made for your high demands,

to display the music on ist finest way.

We guarantee,that this amplifier was carefully produced

and tested in all details.

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Congratulations on your decision to become the proud owner of the
AUDIO-VALVE Challenger power amplifier.

This manual has been prepared to help you understand the operation

of your amplifier and to provide some information about its design and
the variety of ways it may be used.

We have designed and manufactured this amplifier to faithfully and
accurately reproduce music. This hand build instrument should give
a lifetime of pleasure and with a little care and a full understanding
of the operation recommendation in this manual the Challenger
should provide trouble free performance.

Please take time to read this manual
thoroughly before using your amplifier.

List of contents

- Warning and precautions page 3

- Front panel - rear panel page 4

- Drawing front panel page 4 a

- Drawing rear panel page 4 b

- Input - output terminals page 5

- Polarity - phasing page 5

- Installation and operation page 6

- Automatic bias control ( ABR ) page 7

- Specifications page 8

WARNING

This amplifier Challenger operates in class - A and is
therefore capable of generating a moderately high temperatue
which requires carefull placing to aviod any effect this heat
may have on other equipment, funiture and fittings etc.

Do not remove the top cover from this ampllifier.
Hazardous voltages are present. Any repair work should
be referered to a suitable qualified and experienced
service person.

Do not attemt to connect any input of this amplifier to
any of its outputs.

Do not earth any output terminal or connect any of these
terminals together without following the instructions in
this manual or seeking qualified assistance.

Do not place this amplifier in any position where liquids
or any foreign material may accidentally enter it.

Do not disconnect any in / output wire, while the amplifier is
operating.

Do not connenct any voltage source short circut, earth / ground
or appliance (other than suitable HiFi quality loudspeakers )
to any output terminal.

Some preamplifiers, prossesors, CD players etc produce
large switching pulses when switched on, causing a loud
click through the loudspeakers. For this reason, turn on
all other equipment in your system and operate the
Stand - by mode of the amplifier before turning on the Challenger.

Note: the Challenger power amplifier do not cause this problem.

FRONTPANEL

The front panel of the Challenger power amplifier
incorporates with a small panel filled with two switches.
These switches control the day to day function of the amplifier.
The operation of this two switches is like following:

MAIN SWITCH

This heavy duty rocker switch is at the right side
of this panel and switched the mains / line power of the
amplifier On or OFF. A blue LED immediatly beside the
switch illuminates to indicate that the power is ON.

This amplifier draws o moderate high current when
switched on. It is not good practice to repeatedly
active this switch ON and OFF rapidly.

STAND - BY SWITCH.

This switch on the left of the panel alters the operation
STAND BY of the amplifier. Switch down is operation
STAND BY , ( the LED is off).

REAR PANEL

The facilities on the rear panel of the Challenger may
seem not so complex. The rear panel incorporates all
of the terminals for connencting the input signals and
the output signals to the loadspeaker. A reasonable
understanding of this amplifier and the logical approach
should ensure that you are listening to this amplifier in a
very short space of time without any difficults at all.

Please remember that the AUDIO VALVE Challenger
power amplifier is a high quality electronic instrument
capable of an exeptioneal level of performence.

Be sure that you understanding your requirements fully
before you make any connection to this amplifier.