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One channel missing.
Usually ‘bad’ connection on either the input or the
speakers. Try swapping the connection over to
establish if the cause is:
(a) Input to the amp.
Sound will move to the other
channel.
(b) Amplifier or speakers.
Sound will not move.
Strange noises coming from speakers
Turn volume to minimum on unused input, if problem
corrected either fault with source unit or with
connection. If noise persists, problem with amplifier.
A valve that is lit up is not a guarantee that it is
working properly; conversely a valve that is not lit up
will not be working.
Valve Replacement
Valve life will depend upon such things as hours of
use and number of on/off cycles. As all the valves are
lightly loaded. As a rough guide we would estimate
life of approx 4 to 10 years. But this can vary.
What can happen?
A valve is at the end of its life if one of the following
happens:
•
The glowing heater fails in either one of the
EL84s or the ECC83 (This has two)
•
A valve could get “noisy” or “microphonic”
•
The emission (and therefore output and
sound quality) may fall.
•
The valve works intermittently.
•
An air leak causes the valve to fail and the
silver “getter” material to turns white.
It is essential that only the correct valves are used
as some similar looking valves have a different
pin connection and insertion could result in
damage to the amplifier and risk of electric shock.
It is not good practice to remove the valves
unnecessarily as this can strain the pins and cause
tiny air leaks. Icon Audio are happy to replace valves
and check to performance of your amplifier, and
advise on the latest upgrades available.
Method:
Switch off, disconnect from mains and allow to stand
for 20 mins to allow voltages to discharge. Undo the
6x Allan bolts Remove cover. Replace valves as
necessary. Replace cover and test. Do not operate
without cover!
Service:
Should you suspect a problem, you could
return the unit to your dealer or Icon Audio for a
periodic service or return the valves for testing free of
charge. You should carefully remove the valves they
should be well packed in cardboard & foam or similar,
and returned to Icon Audio. (Valves are very rugged if
packed properly).
We welcome any comments you may have regarding
errors or omissions in this manual.
Should you need further advice or information
regarding the use of this unit please contact us.
NEW OWNER?
If you have bought this unit from someone else,
please register with us by email or post stating your
name, address, model, serial number and whom you
purchased from in order that we can keep you up to
date with upgrades and improvements
Specifications and Features
•
All hand wired point to point
•
No printed circuit board to ‘colour’ sound
•
Japanese Blue ALPS volume pot.
•
Class A, all Triode/UL circuit
•
Custom, hand wound transformers
•
Output impedance matching from 8 to 600
Ω
•
2 x JJ EL84 output valves
•
1x ECC83 first stage valve
•
2x 2w continuous per channel max
•
Signal to noise level -90db
•
Freq response better than 20hz-20kHz
•
Total harmonic distortion typically less than 0.2% 1khz
•
Suitable for 4 to 1000 ohm headphones
•
Suitable for 4 to 16 ohm loudspeakers
•
Japanese steel EI transformers with low oxygen copper
•
Slim profile design
•
High quality 2W metal film, & wire-wound resistors
•
Blue LED mains indicator
•
Polypropylene audio capacitors
•
Silver TEFLON audio cable
•
Custom hand wound output transformers
•
Ceramic valve holders for minimum leakage
•
Gold plated Input & speaker terminals
•
One line input
•
300mv input sensitivity.
•
230/240volts 36 watts.
•
C E, ROHS and WEEE compliant where applicable.
•
11cm W, 35 cm D, 14.8 H, 6.5 kg (remember to allow
space for connections)
(Specifications subject to change, errors & omissions excepted. General 24/04/09)
icon Audio
(UK) Ltd
351 Aylestone Road Leicester LE2 8TA
www.iconaudio.com
Ph +44 (0) 116 244 0593 +44 (0) 7787 158791
