• Introduction
3
• Installation and safety notes
3
• Accessories
3
• Rear panel diagram
4
• Power inlet
4
• Power switch
4
• My-Link input/output
4
• Remote trigger control
input/output
5
• Loudspeaker outputs
5
• Line Inputs
5
• Line Outputs
5
• Front Panel Controls
6
• Standby switch
6
• Loudspeaker output
protection and muting
6
• Trouble-shooting guide
7
• Specifications
7
2
CONTENTS
No sound:
• Power turned off or system in standby
mode. Check that the LED in the
STANDBY button is blue.
• The input connection is loose or
missing. Check that the connection is
secure.
• Protection relay has operated because of
a short circuit loudspeaker wire or
amplifier overheating. Carefully check
all wiring after switching the amplifier
POWER OFF to allow it to cool.
• The fuse in the power cord inlet has
failed. Unplug the power cord from both
the wall socket and the amplifier and
pull out the small receptacle below the
power cord inlet. Two fuses should be
visible. The further fuse is the operative
one and should be checked. If it has
failed, replace it with the nearer (spare)
fuse. If this too fails, then return the
amplifier to your dealer for service.
• UK version only: The fuse in the mains
plug has failed. Check and replace if
necessary.
Sound in one channel only:
• Loudspeaker cable pulled loose. Check
all connections, both at the loudspeakers
and amplifier.
• Interconnect cable pulled loose or
making poor contact. Check and, if
necessary, un-plug and re-plug all
relevant cables.
• Amplifier produces less power than
normal. First level temperature
protection activated (see page 6). Reduce
volume, or improve ventilation to allow
amplifer to cool.
Amplifier fails to respond to My Link
remote commands (from e.g. MDP
500
Preamplifier-Processor):
• My-Link cable is loose or not connected.
Check connections on all linked units.
Loud buzz or hum:
• Interconnect cable pulled partially out of
its socket.
• Defective interconnect cable.
Incorrect operation - some functions not
working:
• Control processor latched. Switch off
POWER on rear panel and wait for
about one minute. Then switch POWER
on. Normal operation should resume.
TROUBLE-SHOOTING
GUIDE
SPECIFICATIONS
Some of the most common problems
Five channels driven
Continuous average power output(<0.05% THD, 20Hz-20kHz) …………………………………………………8
Ω
:100W
…………………………………………………………………………………………………………………………4
Ω
:150W
IHF dynamic power……………………………………………………………………………………………………8
Ω
:150W
…………………………………………………………………………………………………………………………4
Ω
:240W
One channel driven
Maximum continuous power output (1% THD, 1kHz) ……………………………………………………………8
Ω
:160W
…………………………………………………………………………………………………………………………4
Ω
:280W
IHF dynamic power……………………………………………………………………………………………………8
Ω
:180W
…………………………………………………………………………………………………………………………4
Ω
:320W
Input sensitivity (for 100W into 8
Ω
)………………………………………………………………………………………1.0V
Voltage Gain…………………………………………………………………………………………………………………29dB
Input impedance …………………………………………………………………………………………………25 k
Ω
/440pF
Frequency response (20Hz - 20kHz)……………………………………………………………………………………±0.2dB
Signal/Noise ratio (A weighted, ref. 100W) ……………………………………………………………………………110dB
Line inputs ………………………………………………………………………………………………………5 x RCA phono
Line outputs ……………………………………………………………………………………………………5 x RCA phono
Control inputs/outputs ………………………………………………………………………My-Link I/O: 2 x RCA phono
…………………………………………………………………………………………DC trigger I/O: 2 x 3.5mm mono jack
Loudspeaker outputs ……………………………………………………………5 pairs of gold-plated 5-way binding posts
Physical specification
Dimensions (width x height x depth) …………………………………………………………………436 x 135 x 368 mm
Weight, Net: ………………………………………………………………………………………………………………20 kg
Power requirements
Voltage (set by internal wiring) …………………………………………………………………………………120 or 230 V
Stock No: OST0012000
7
