Australian monitor KLA User Manual
Australian Monitor
Introduction
Ktu
K snnlns LooP AMPLIFIERS
Australian Monitor is
the successful K-Series range, these amplifiers utilise
provide
system
detail
Hosting most of the features and
loop amplifiers offer some additional
up of an lnduction loop system.
These
to
whilst maintaining
include:
,
Additional
construction
strapping
features include:
for
connectors, massive
proud
a constant
lntemal
10dB into compression indicator
lnput Level
level
Dual
Low frequency output current limiting
Loop disable relay at turn on
Loop open / voltage too high indication
Binding Post and
Active
Signal Ground
ease
introduce
to
cunent into a single turn
total stability.
protection
limiter
Balanced lnputs
of
with 250mV threshold and
Control
output cunent indicators
Speakon
"LlFT"
Custom
servicing, well
heatsinking, Front to back cooling and a dual speed axial
you
to
circuitry, controls
for adjusting input signal for the ideal operating window
switch.
its range of lnduction Loop amplifiers. Modelled
networks of the K-series Audio Amplifiers the KLa
loop connections
designed
regulating high current
our unique impedance and
lnduction Loop, resulting in clarity and
and lndicators
panel
front
(and
indication)
-
heavy duty chassis, open modular
assist
to
indication
power
supply, lnput signal
phase
in the conect set-
sensing
fan.
on
Protection
over-voltage
Breaker,
The layout,
stability, reliability and longevity.
features include:
protection,
lndependent
grounding,
DC supply rail Fuses.
decoupling and componentry have been optimised to
RF interference suppression, Short-circuit
ltu
Mainrs inrush cunent
suppression, lnput muting at tum on, lnput
protection,
provide
Mains
the user with
Circuit
Austdlan Monitor
KLa Loop Amplifiers 2
Front Panel
Your KLa loop amplifier is furnished with simple controls and indicators to assist in the set up of
the amplifier for driving a
to show the
1 Input Level
"lnput
A
suitable for
lnput Level
lnput Signals between
proper
Level" attenuation control is
Controls and Indicators
operating levels
Control.
processing
Control
provides
properly
by the internal limiter.
-10
calculated lnduction Loop. The indicators
of input signals
provided
attenuation only.
and
+10d8
but OdB
provide
and output current.
as to adjust
so
The circuit is based on a fixed
The input of the unit can deal with Gain
(.775v)
preferable.
is
your
incoming signal
visual detail
gain
and thus the
to a level
Levelled
2 Operating Window
This Bi-Colour LED indicates signal level to the unit's limiter circuitry.
Green indicates the
applied signal should be illuminating
position.
Red indicates that the signal is 10dB or more
illuminated
continuous
3 Output
This LED is
driven into clipping. ldeally this LED
too high, that the loop has
4
Output
"Output
The
peak
the
all the time but should flash with
toggle between the LED illuminating
Voltage
provided
Drive Control.
Drive" level control dictates current drive
current level required to
Indicator.
threshold
Indicator.
Clip
and will illuminate amber when the output voltage
gone
of the
open circuit
limiter and is factory
this
with the lnput Level control in the appropriate
LED
into compression. This led should not be
programme
green
should never illuminate and implies that
and/or the loop impedance is too
properly
drive the
peaks.
and red.
to the loop. lts
loop as indicated by the chart on
preset
for 250mV
ldeal signal level will cause a
(-10dB).
of the amplifier is
the output level is
high.
position
will be dictated by
page
Any
8.
/tu
Australlan Monitor
5
Current Level
"Cunent
The
Indicator.
Level"
LED
provided
is
as indication
to show the
peak
KLa Loop Amplifier.s
cunent
in the loop.
3
KLa I -
KLa2 -
see chart for
6 Fault
Green
Green
3Amps,
=
5 Amps,
=
loop calculations.
/ Current Limit
This amber coloured
indicates
infrequent
illuminating
The
on the output.
7
On lThermal Indicator
This is
on and receiving
ln the advent
temperature
shut down and
has had a cool
suppression,
limiting of
flashing
of this
LED will also illuminate
a Bi-Colour
of a Thermal
of
of this LED
LED requires
LED which
mains
the amplifier
isolated itself
down
input muting
Red
=6Amps.
Red
10 Amps
=
Indicator.
LED will
the cunent
power.
period
illuminate when
into the load
peaks
on
the output drive
with other
will normally illuminate
Overload this LED will tum
has exceeded
from the loop.
faults such
the unit
and the
loop relay isolation
load cunent exceeds
and will flash
at lower
a safe level
The fan will
frequencies
to be reduced.
as blown negative
green
red indicating
of operation
continue to
with
quite
is
and indicates
will restart automatically
will be bypassed.
a safe value.
programme peaks.
acceptable.
rail fuse and short
that the amplifier
that the intemal
and that the amplifier
run and once the
providing
inrush
The led
Constant
circuits
operating
amplifier
current
The
is
has
8 Power
Press the switch down
should
ofr.
At tum-on
Switch
be the last
a number of events
a)
Mains inrush cunent
b) A relay isolates
c) lnput signal to
for
ON and up for
piece
of equipment
happen during
suppression is
the lnduction
the main amplifier
Loop until the amplifier
OFF.
you
tum on and
the
provided,
is muted
Like
any other
power-up
(>30d8)
power
the first
of
has established
for approx'2
piece
the amplifier.
amplifier in
of equipment
itself,
to 3 seconds.
any system it
you
tum
/tu
Aushalian
lYonitor
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