icon Audio MB90 MK II Скачать руководство пользователя страница 2

Page 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 

    ………. 

 

Amp Serial Number  

 

………. 

 

Customer 

   …………………………… 

 

 

Check amplifier finish 

 

………. 

 

Internal wiring check  

 

………. 

 

Check Triode mode  

 

………. 

 

Run min 6 hour test  

 

………. 

 

Check 

input 

   ………. 

 

Output Valve Bias level 

 

……...v 

 

Sound 

Quality   ………. 

 

Channel 

Balance 

  ………. 

 

Valve 

Microphony 

  ………. 

 

Valve 

Seating   ………. 

 

Hum 

level 

 

   .....…..mv 

 

RF 

Test 

 

   ………. 

 

LED 

brightness 

  ………. 

 

Serial No sticker and recorded 

………. 

 

Mains voltage  

 

 110 / 230-240V 

 

IEC Mains Fuse 

 

 

………A 

 

Soft Start Fitted 

 

 

………. 

 

Sales 

invoice 

   ………. 

 

Bottom 

label 

   ………. 

 

Credit card receipt   

 

.……… 

 

Customer survey form 

 

.……… 

 

Bias 

meter 

   ………. 

 

Transformer Protection 

 

………. 

 

Upgrades:

  

 

HT delay fitted? 

 

 

…Y / N 

 

Output valves 

 

……....………. 

 

1

st

 Stage valve 

 

………………. 

 

Phase splitter valves 

………………. 

 

Capacitor grade (Audio)   

………. 

 

Capacitor grade (Power)   

………. 

 

Mains 

lead 

   ………. 

 

Interconnects   ………. 

 

 
 
Signed 

off 

by 

  ………………………. 

 

Notes: 
 
 
 
Please note we do not test the standard mains lead. 

Содержание MB90 MK II

Страница 1: ...ave missed anything out Hi fi reproduction is a long chain of events that includes the recording editing mixing etc before being transferred to a medium such as LP Digital etc before being played thro...

Страница 2: ...Run min 6 hour test Check input Output Valve Bias level v Sound Quality Channel Balance Valve Microphony Valve Seating Hum level mv RF Test LED brightness Serial No sticker and recorded Mains voltage...

Страница 3: ...should have a visible orange glow from the cathode heaters With the pre amp volume control set to minimum there should be no sound coming from the speakers except a barely discernable hum If there ar...

Страница 4: ...rs are usually switchable to mono and stand the speakers close together If correct you should hear plenty of bass if not reverse the terminals for one channel only either at the amp or speaker You wil...

Страница 5: ...sconnect from the mains and seek qualified help or Icon Audio Replacements should be 3 Amp anti surge The fuse in the wall plug should be a 3 or 5 amp fuse although unlikely to fail this should be che...

Страница 6: ...0mv or the black mark See pics Making the earth connection 3 Checking Bias You should get a reading of ideally 300mV if each valve is conducting correctly But this could vary from about 250mV to 350mV...

Страница 7: ...e valve s in order to familiarise yourself with the procedure If changing all the KT120s be ready to adjust the bias in order not to overload the power supply Don t worry how low the reading goes this...

Страница 8: ...sirable due to the high unit value icon Audio UK LTD 351 Aylestone Road Leicester LE2 8TA www iconaudio co uk Phone 44 0 116 244 0593 Cell 44 0 778 715 8791 Fax 0116 244 0593 2013 09 04 G version Foot...

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