icon Audio Stereo 60 MK IV Instruction Manual Download Page 2

Page 2 

2 Final Inspection - Your Guarantee of Quality

 

 

To  assure  you  of  optimum  performance  and  reliability,  this  amplifier  has  passed  our  rigorous 
final inspection and listening test by the Icon Audio team in Leicester. During which the final set 
up and adjustments were made. 
 

 

Date   

 

 

 

…./…./…. 

 

Model  

 

 

 

ST60 MK IV 

 

Amp Serial Number  

 

……………… 

 

Customer 

 

 

 

…………………………… 

 

 

Check amplifier finish 

 

………. 

 

Internal wiring check  

 

………. 

 

Check Triode mode  

 

………. 

 

Run min 8 hour test  

 

………. 

 

Check inputs & tape monitor 

………. 

 

Output Valve Bias level 

 

………. 

 

Sound Quality 

 

 

………. 

 

Valve Microphony   

 

………. 

 

Valve Seating 

 

 

………. 

 

Hum level left/right   

........

mv

…....

mv

 

 

RF Test  

 

 

 

………. 

 

Power out 1 kHz 8ohms 

...……L….…R 

 

Channel Balance=   

 

………. 

 

LED brightness 

 

 

………. 

 

Serial No sticker and recorded 

………. 

 

Mains voltage  

 

117 / 230-240V 

 

IEC Mains Fuse 

 

3.0 A

………… 

 

Mains plug fuse (UK only) 

5A…………… 

 

HT (int) Spare 2 x 500ma T Fuses 

…….. 

 

Remote Control Function   

………. 

 

Sales invoice  

 

 

………. 

 

Bottom label   

 

 

………. 

 

Credit card receipt   

 

.……… 

 

Customer survey form 

 

.……… 

 

Bias meter 

 

 

 

N/A 

 

Remote (in box) 

 

 

………. 

 

Upgrades:

  

 

Capacitors 

 

 

………………. 

 

Output valves 

 

……....………. 

 

1

st

 Stage driver 

 

………………. 

 

2

nd

 Stage driver 

 

………………. 

 

Other   

 

 

………………. 

 

 
 
Signed off by  

 

………………………. 

 

Notes: 
 
 
 

Summary of Contents for Stereo 60 MK IV

Page 1: ...e In addition we have incorporated features like switchable TRIODE mode and adjustable sensitivity well as 4 Ohm outputs to match a wide range of operating conditions In Ultralinear mode the power is...

Page 2: ...Triode mode Run min 8 hour test Check inputs tape monitor Output Valve Bias level Sound Quality Valve Microphony Valve Seating Hum level left right mv mv RF Test Power out 1 kHz 8ohms L R Channel Bal...

Page 3: ...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...

Page 4: ...ted to these terminals unnecessarily Connecting loudspeakers 4or 8 Ohms The output impedance of the Stereo 60 MK IV has been optimised to work with 3 12 ohm speakers Many modern speakers use a 4 ohm b...

Page 5: ...plified through the speakers with the possibility of damage in some cases The solution is to switch on the preamplifier first with the ST60 MK IV in standby until the preamplifier is working normally...

Page 6: ...be no sound on that channel You can test for this by checking the bias a zero reading would normally mean a blown fuse Also the valve s in question will be much cooler to the touch be careful Replacem...

Page 7: ...gineer You are welcome to speak to one of our engineers by phone or email Most dealers and Icon Audio are happy to re bias and check you amplifier free of charge No reading at all or 0 may mean a faul...

Page 8: ...igh quality metal film wire wound resistors High quality polypropylene audio caps Optional Mundorf Silver Gold audio caps Japanese Blue ALPS volume pot Rubicon Nichichron power capacitors Silver plate...

Page 9: ...f replacement This amplifier is designed for normal domestic hi fi use It is not guaranteed for commercial Public Address use or use in other situations The guarantee becomes void if the unit has been...

Page 10: ...wn with the flaps open 2 Lift the cardboard box off 3 Remove the bottom packing first 4 Turn the unit the right way up and remove the top packing Please be careful not to damage the small tape monitor...

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