Australian Monitor KA800 User Manual
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Operation Manual
IMPORTANT!
Please read carefully.
This operation manual contains important information
regarding safety precautions, installation, performance,
operation and maintenance of your
amplifier. You should familiarize yourself with the contents
of this manual before operating your amplifier.
Safety Precautions
and Labelling
The rear panel of the unit has a number of markings
and internationally recognized symbols related to the
hazards and precautions that should be taken when
operating MAINS connected equipment.
The presence of a LIGHTNING FLASH with an
arrowhead contained within the boundaries of an
equilateral triangle is intended to alert the user that
dangerous uninsulated voltages may exist within the
unit's enclosure. These voltages may be of a sufficient
magnitude as to constitute the risk of an electrical
shock.
This symbol is reinforced with the text:
KA-KA-
KA-Series power
KA-KA-
REFER SERVICING TO
QUALIFIED PERSONNEL.
NO USER SERVICEABLE
PARTS INSIDE.
The user should not attempt to service the unit. Only
qualified and knowledgeable personnel familiar with
the internal workings of the unit should attempt any
repair, servicing or authorized modification to the
unit. The unit does not contain any parts which the
user can service or re-use in this or any other product.
!CAUTION!
RISK OF ELECTRICAL SHOCK
DO NOT OPEN
The presence of an EXCLAMATION MARK contained
within the boundaries of an equilateral triangle is
intended to alert the user that there is important
operating and maintenance literature that
accompanies the unit.
!WARNING!
DO NOT EXPOSE TO EITHER
RAIN OR MOISTURE
The unit should not be operated in a situation where
it may encounter the entry of water, rain, or any fluids.
To expose the unit to the above conditions may make
the operation of the unit hazardous and increase the
risk of electrical shock.
If you are in need of special assistance and the
information you require is outside the scope of this
manual, please contact your nearest service agent or
Australian Monitor direct:
THE TECHNICAL OFFICER
AUSTRALIAN MONITOR
C/- AUDIO TELEX COMMUNICATIONS PTY LTD
PRIVATE BAG 149,
SILVERWATER. N.S.W. 1811
AUSTRALIA.
Phone Fax
Local (02) 9647-1411 (02) 9748-2537
International 61-2-9647-1411 61-2-9748-2537
Email ho@audiotelex.com.au
Internet www.australianmonitor.com.au
Features:
- Custom designed, 2RU heavy duty alloy chassis.
- Open modular construction for ease of servicing.
- Symmetrical layout - even weight distribution.
- Well-regulating, high current power supply.
- High efficiency toroidal mains transformer.
- Binding post and Neutrik "Speakon" output
connection.
- Stereo or bridged / mono operation.
- Input signal strapping (loop through) connectors.
- 21 Position detented attenuators.
- Balanced inputs and buffered attenuators.
- 1 Watt output indication (2.828 volts).
- 1 dB below output clip indication.
- Massive heat-sink / heat-exchangers.
- Efficient front to back cooling.
- Dual, twin speed axial fans.
- Multi-role output fault indication.
- Front carry handles. Rear rack mount ears.
- Plug in signal modifiers (optional).
- Signal ground lift switch.
- High-quality, close-tolerance components
throughout.
Protection Features
- Suppression of inrush current at mains turn-on.
- Input muting at turn-on.
- Input overvoltage protection.
- Radio-frequency interference suppression.
- Short-circuit protection and indication.
- High overload mains fuse.
- Internal, independent DC supply rail fuses.
- Layout, grounding, decoupling and componentry
have been optimized to provide the user with
stability, reliability and longevity.
Contents
Page
1. Introduction 5
2. Controls, Connectors and Indicators 6
2.1 Front Panel 7
2.2 Rear Panel 9
3. Installation 11
4. Operation 13
5. Bridge Mode 15
6. Two Ohm or Not Two Ohm 16
7. Maintenance 17
8. Warranty 18
9. Specification 19
List of Illustrations
Page
Figure 1. Block Diagram 5
Figure 2. Front Panel Layout 6
Figure 3. Rear Panel Layout 8
Figure 4. Case Dimensions 10
Figure 5. "Speakon" Connector Wiring 12
Figure 6. Bridge Mode Speaker Wiring 15
1. Introduction
Introduction 5
Congratulations on choosing Australian Monitor for
your professional amplification requirements.
The design of your
embrace all the aspects of a well designed unit. The
visual design, mechanical, electrical and sonic parameters, along with our dedicated manufacturing
process, have all been optimized to provide a professional tool that exhibits quality, reliability and longevity.
KAKA
The
KA-Series amplifiers are 2 unit (3.5") tall, 19"
KAKA
wide rack mountable units.
KAKA
KA-Series Audio Power Amplifiers
KAKA
Each channel of the amplifier comprises a balanced
active input with a buffered attenuator driving a
differential class A drive stage which in turn drives a
fan-cooled, class AB, MOSFET output stage
configured as a source follower. The unit operates
from a high current-capable linear power supply.
These units have been specifically designed to deliver their high power output with minimal distortion,
and provide the critical degree of control required by
your speakers, at high duty cycles for extended
periods.
Figure 1 Amplifier Block Diagram
6 Controls & Connectors
2. Controls,
Connectors
& Indicators
Figure 2 Front Panel Layout
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