background image

 

 
 
 

 
 
Once the initial power supply unit set up has been completed and the IO Limited has 
been correctly installed in your tonearm, you are ready to begin operation.  
 

Mains On

 

This  switch  is  used  to  turn  the  Power  Supply  Unit  on,  and  is 
located  on  the  right  hand  side  of  the  front  fascia.  Turn  the 
switch  clockwise  /  right.  The  red 

ʻ

power

ʼ

  LED  situated  below 

the 

ʻ

Mains On

ʼ

 switch should glow RED. 

 

  

 

 

THE  POWER  SUPPLY  UNIT  SHOULD  BE  SWITCHED  OFF 

WHEN  NOT  IN  USE  FOR  AN  EXTENDED  PERIOD  (MORE 
THAN A FEW DAYS). 

 

Cartridge On

 

This  switch  is  used  to  apply  the  required  voltage  to  the 
cartridge. When you wish to use the Io Limited (to play music!), 
turn the switch clockwise / right. There are two reasons for this 
switch;  firstly,  it  allows  the  power  supply  unit  to  remain 
polarized  even  when  the  cartridge  is  not  in  use  (Cartridge  On 
switch  in  the 

ʻ

OFF

ʼ

  /  anticlockwise  position),  and  secondly,  it 

allows  the  supply  to  be  disconnected  when  not  in  use,  which 
prolongs the life of the Io Limited. 

 

 

 

 THE  CARTRIDGE  SHOULD  ALWAYS  BE  SWITCHED  OFF 
WHEN NOT IN USE! 

 
Meter On 

Located  on  the  lower  left  hand  side  of  the  front  fascia,  this 
switch is used to activate the test meter, positioned on the front 
of the power supply unit. Turn the switch clockwise / right.  

 

Meter

 

The  meter  allows  the  user  to  monitor  the  approximate  voltage 
being  supplied  to  the  cartridge.  With  the  cartridge  turned  on 
(see 

Cartridge  On

  above)  and  the  meter  turned  on             

(see 

Meter  On

  above)  the  meter  should  read  approximately   

1.2 V DC to 1.4 V DC. With the cartridge turned off, the meter 
will show a higher reading. 

 

 

 

IF THE METER SHOWS A READING GREATER THAN 1.2V 

DC TO 1.4V DC WHEN THE CARTRIDGE IS SWITCHED ON, 
SWITCH  THE  POWER  SUPPLY  UNIT  OFF  IMMEDIATELY 
AND  CONTACT  YOUR  AUTHORIZED  AUDIO  NOTE  (UK) 
DEALER. 

 

 
 
 
 

 
 
 
 

OPERATION 

Summary of Contents for IO LIMITED

Page 1: ... IO LIMITED MOVING COIL CARTRIDGE AND POWER SUPPLY OWNERʼS INFORMATION ...

Page 2: ...E DECLARATION OF CONFORMITY DISPOSAL POWER REQUIREMENTS 3 INTRODUCTION 4 OVERVIEW UNPACKING AND INSTALLATION 5 VALVE INSTALLATION 6 CONNECTION 7 OPERATION 8 TECHNICAL SPECIFICATIONS 9 WARRANTY INFORMATION 10 CONTACT INFORMATION CONTENTS ...

Page 3: ...e provided Do not restrict airflow through any ventilation slots or place the unit on any surface that may restrict airflow Valve equipment operates at extremely high temperatures KEEP OUT OF THE REACH OF CHILDREN AND ANIMALS Do not store or operate this unit in areas of high humidity or in close proximity to water moisture Do not expose or immerse the unit in liquid of any kind This product must ...

Page 4: ...normal household waste To prevent possible harm to the environment please separate the product from other waste to ensure that it can be recycled in an environmentally safe manner Please contact your retailer or the appropriate local government office for collection facilities We declare under our sole responsibility that this product is in conformity with the following standards or standardized d...

Page 5: ...ts specifications are subject to change without notice Therefore it is important to refer to the manual that is supplied with your product for the most accurate information manuals downloaded from our website or obtained from other sources may no longer fully apply to your product If you have any questions regarding the information contained within this document or your new component please feel f...

Page 6: ...anical movement of the stylus is accurately translated into an electrical signal Any extraneous excitations arising as a result of vibrations in the cartridge housing must be eliminated Therefore in the design of the Audio Note UK cartridges considerable attention has been paid to the rigidity and structural integrity of the body and to ensuring that the adopted mechanical construction stores the ...

Page 7: ...ng all unnecessary connections Cantilever Material and Design It is on the design and construction of the cantilever that much of the quality of a cartridge depends Many materials were investigated Boron Beryllium Sapphire Diamond and Titanium and all except Titanium were disregarded in the final analysis due to deficiencies in one or more areas It is vitally important for the cantilever and stylu...

Page 8: ...th the offerings from the various stylus manufacturers around the globe in 1995 we contracted a company to develop a process which would allow them to cut and polish a perfect natural octagon to a level of the best surgical instruments used for eye and other fine surgery on a diamond less than half the size of the closest readily available option at that time This remains to the best of our knowle...

Page 9: ...itial installation procedure Carefully remove the wooden insert Underneath you should find an appropriately sized hex head wrench Gently hold the cartridge by its side cheeks and identify the two mounting bolts that secure it to the wooden insert Carefully remove the two mounting bolts and once removed retain these as they can be used to attach the IO Limited to your tonearm heashell Once the cart...

Page 10: ...ernal power supply unit an additional pair of internal or external arm wires and a two core twisted pair external arm cable of suitable length to reach the external power supply unit will be required PLEASE REMEMBER THAT THE POWER SUPPLY UNIT CONNECTION CABLES MUST BE OF SUITABLE SIZE AND FLEXIBILITY SO THAT THE TRACKING AND OPERATION OF THE TONEARM IS NOT DISRUPTED Audio Note UK manufacture dedic...

Page 11: ...and align them with the threaded holes in the top surface of the cartridge body Gently tighten the bolts to hold the cartridge securely in place Do not fully tighten the bolts until all cartridge alignment procedures have been completed Once all alignment has been finalized the extra four fixing bolts may be installed if you wish to maximize the rigidity of the cartridge headshell interface Please...

Page 12: ...hen viewed from the front and side These adjustments referred to as Azimuth and Stylus Rake Angle will have a noticeable effect on tonal and channel balance and every effort should be made to accurately adjust these settings Once the final cartridge alignment adjustments have been completed check the tracking weight again to ensure that it is correctly set at 2 5g You are now ready to enjoy your r...

Page 13: ...ading of 1 8V DC 2 0V DC divide the value on the meter scale by 10 Turn the cartridge supply on using the ʻCartridge Onʼ switch located on the left hand side of the front fascia Turn the switch clockwise right With an accurate voltmeter set to the 2V DC scale measure the voltage at the PSU connection pins on the cartridge BE EXTREMELY CARFUL AND DO TOUCH BOTH PINS WITH THE SAME TEST PROBE OR CREAT...

Page 14: ...e cartridge is not in use Cartridge On switch in the ʻOFFʼ anticlockwise position and secondly it allows the supply to be disconnected when not in use which prolongs the life of the Io Limited THE CARTRIDGE SHOULD ALWAYS BE SWITCHED OFF WHEN NOT IN USE Meter On Located on the lower left hand side of the front fascia this switch is used to activate the test meter positioned on the front of the powe...

Page 15: ...should a small soft artistʼs brush be used to clean the diamond of cantilever moving the brush slowly gently and extremely carefully from back to front never in the opposite direction or from side to side Cartridge Life The operational life of a cartridge can be affected by a variety of factors such as frequency of use ambient temperature humidity quality of vinyl being played etc Our approximate ...

Page 16: ...rizontal 10 Vertical 15 MAGNETIC FIELD STRENGTH Electromagnetic 1 200 Gauss WEIGHT 19g STYLUS PRESSURE 1 5 4g 2 5g optimal POWER SUPPLY OUTPUT VOLTAGE 0 4A 1 2V DC POWER SUPPLY WEIGHT AND DIMENSIONS 300mm w x 250mm d x 100mm h Weight 5Kg NOTE Due to Audio Note UK ʼs ongoing research and development program specifications are subject to change without notice TECHNICAL SPECIFICATIONS ...

Page 17: ...or after the Warranty period If the product must be shipped please use the original packaging materials and include a copy of the original sales receipt along with a note explaining in as much detail as possible the problems you are experiencing with the unit Only use a reputable Courier Service or Shipping Agent and ensure that your product is insured during transit Any servicing repairs or modif...

Page 18: ...31 498 e mail info audionote co uk CONTACT INFORMATION If in the future your Audio Note UK product requires servicing or if you require technical support or have any questions regarding this or any of our other products please contact your local Audio Note UK dealer Alternatively please feel free to contact us directly ...

Reviews: