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IMPORTANT READ THESE NOTES THROUGH FIRST!
1 Unpack unit carefully. Make sure that it is in
good condition. If not report to Icon Audio. It is
important
that
you
warranty/service return.
2 If Necessary fit the valves, or check that they
are firmly in place. The KT88s should be fitted
first observing the numbers 1,2,3,4 on the rear of
the valve; this corresponds with the four REAR
sockets from left to right viewed from the front.
This is essential as each valve is 'set up' in this
position. Do not push or pull the KTs by the
glass envelope, this could cause the glass
envelope to become detached from the base,
damaging the valve. Be careful to note the correct
orientation of the central "Spigot" between the
pins otherwise damage could occur. (Damaged
valves are not covered by our warranty)
The small valves are normally numbered 5, 6, 7
and should be gently pushed into place. The
middle valve is 6SL7 (6188) and the outside pair
are 6SN7.
NOTE: The KT88s and 6SL7/6SN7 are NOT
interchangeable! This will cause damage and
is dangerous!
3 Connect to source units, e.g. CD, Tuner,
Phono pre amp, MP3, AV etc via appropriate
phono sockets. A recording device (Tape, CD,
MP3) or Equalizer should be connected via "Tape"
(input) and "Record out".
4 Connect to speakers Make sure to get the
correct polarity of speaker cables. (See speaker
connections chapter). If 'bi-wiring' both 'common'
should go to the black terminal, and both 'positive'
(or red) should go to the red terminals.
5 Connect to mains supply using supplied IEC
mains lead to 240v supply. If for some reason
the welded plug must be removed, please
remove fuse and dispose of immediately. (As
they can be a danger to children if plugged in).
The replacement plug should be wired in the
following way Brown to Live terminal, Blue to
Neutral terminal and Green/Yellow to Earth
terminal.
6 Before switching on make sure that the
"standby switch" is in the "up" position.
SWITCH ON! The blue mains indicator should
light up. Leave for at least 60 seconds to for the
valves to warm up, and then push the "standby"
switch into the "down" position. The amplifier
should now be working. All valves should have a
visible orange glow from the cathode heaters.
With the volume control set to minimum (fully anti-
clockwise) there should be no sound coming from
the speakers except a barely discernable gentle
hum. If there are any unpleasant sounds coming
from the speakers, switch off and refer to the
'Trouble Shooting' section or contact Icon Audio.
2 QUICK SET UP GUIDE
keep
packaging
for
If your unit is fitted with the optional HT delay
circuit, only use the "Standby" when switching
from "Triode" to "Ultralinear" operation or when
the amplifier will not be used for a while.
6a Integrated/Power Amplifier Switch
Located on the rear LH side this switch is normally
"UP" for integrated operation (high sensitivity). If
use with a pre-amplifier is required, the switch
should be "DOWN" in the low sensitivity position.
We would recommend use of the tape input with
the volume on "FULL" or set as required and
adjusted from the pre-amplifier.
7 Your unit should now be functioning. If not
check
wiring
again
monitor/volume to choose source program and
suitable listening volume. Do not operate at a high
volume for the first five minutes to allow the valves
to warm up properly.
Please note all these things are normal for
valve amplifiers:
A, Valves can get very hot, BEWARE!
B, The transformer cover will get quite warm
C, The amplifier may smell for a few weeks.
D, Mobile phone 'breakthrough' is normal.
E, Valves may make a 'tinkling' sound when
warming up and cooling down.
F, One channel may come on before the other at
switch on.
G, There may be a 'click' when switching off.
8 Health and Safety. The valves when operating
have high surface temperatures. Keep out of
reach of children and pets. The use of the
supplied
guard
is
recommended
circumstances. Always unplug when making
adjustments. Like all amplifiers there are
potentially lethal high voltages inside (over
400v DC), which when switched off can take
twenty minutes to discharge! Do not remove
bottom panel unless you are a competent
engineer. There are no user serviceable parts
inside.
Like
other
appliances do not leave unattended whilst
switched on. Do not adjust the KT88 bias pre
sets without reference to the manual. Incorrect
adjustment could cause the valves to overheat,
in damage to valves and
with resulting
amplifier.
To maintain the best performance of the
amplifier you should check the bias of the
output valves from time to time (say twice a
year). Full details will be found in section 6.
In this manual we have attempted to give you all
the information to enable to get the best out of this
amplifier, without being overly long or to technical.
However we are always keen for feedback on
errors or omissions on the information within!
and/Use
selector/tape
in
these
household
electrical
Page 3
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