Page 3
IMPORTANT READ THIS FIRST
2 QUICK SET UP GUIDE
1 Unpack unit carefully
. Make sure that it is in
good condition. If not report to Icon Audio. It is
important
that
you
keep
packaging
for
warranty/service return.
2 If necessary fit the valves, or check that they
are firmly in place.
The KT120/KT150s should
be fitted first observing the numbers v1,v2,v3,v4
on the rear of the valve; this corresponds with the
four sockets (nearest the transformers) from left to
right viewed from the front of the amp. This is
essential as each valve is ‘set up’ in this position.
The smaller valves may be gently pushed into
place. The outside pair = 6SN7 (numbered 5 and
9), the inside pair = 6SL7 (numbered 6 and 8).
The OD3 regulator valve is v7.
Do not push or
pull the valves by the glass envelope
, this
could cause the glass envelope to become
detached from the base, damaging the valve.
3 Connect to source units
, e.g. CD, Tuner,
Tape, Phono pre amp (if used) etc via appropriate
phono sockets.
4 Connect to speakers
(4 to 16 ohms).
Don’t
forget 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 8 ohm
terminals.
5 Connect to mains
supply using supplied IEC
mains lead to 220-240v supply.
If for some
reason the welded plug must be removed,
please
remove
fuse
and
dispose
of
immediately.
(They are 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 meter 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 discernible 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.
We recommend you switch to “standby” when
switching off, (to be ready for your next session).
6a Power amplifier use of the integrated amp
Located on the rear,
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. The
“Tape” input is the most direct. Set with the
volume on “FULL” or as required and volume
adjusted from
your preamplifier (if you’re your pre-
amplifier is not remote control, you could “fix” the
volume the pre-amp, and make use of the Stereo
60 MKIII remote control).
You may hear very low distorted sound from the
speakers during the warm up time. This is
because there is virtually no HT to operate the
amplifier. We suggest you reduce the volume until
the HT cuts in.
Power amplifier version
This the same specification as the integrated
version but without volume control or selector.
Connect your pre amplifier to L/R RCA inputs on
the rear. Switch on pre amplifier BEFORE you
bring the ST60 out of standby (this will prevent
switch on “thump”)
8 Your amplifier should now be functioning
. If
not check wiring again and/Use selector/tape
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 mains transformer will get quite warm
C, the amplifier may smell slightly at first.
D, M
obile phone ‘breakthrough’ is normal.
E, Valves may make a ‘tinkling’ sound when
warming up and cooling down.
9
Do not switch between “Ultralinear” and
“Triode”
without
first
switching
into
“Standby”. This could cause irreparable
damage to the transformers which would not
be covered under warranty.
10 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 in these
circumstances. Always unplug when making
adjustments.
Like all amplifiers there are
potentially lethal high voltages inside (over
500v DC), which when switched off can take
several minutes to discharge!
Do not remove
bottom panel unless you are a competent
engineer. There are no user serviceable parts
inside.
Like
other
household
electrical
appliances do not leave unattended whilst
switched on.
Do not adjust the KT88 grid bias
pre sets without reference to the manual. Incorrect
adjustment could cause the valves to overheat,
with resulting in damage to valves and amplifier.
11 Important that you check the check the bias
reading once or twice a year. This will ensure
peak performance and maintain valve life.
See section 8.
