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 Lab12 suara 2 x 50W 

Class A Power Amplifier

 

 

 

IT IS YOURS! 

 

Thank  you  for  selecting  the  Lab12  suara,  an  audiophile  Parallel  tube  Class  A  power  amplifier.  Every 
component on it is designed to provide smooth and untreated sound. It is a full tube amplifier with 2x 
6n1p, 2x 6n2p NOS Russian driver tubes and 4 x KT150 on power stage. Suara can cooperate gratefully 
with any preamplifier on the market and it is the perfect match for Lab12 pre1. Suara has the ability to 
nail you down on your couch and make you listen all your music collection again. 50 watt of power for 
any pair of speakers is available but the most remarkable point is that you will receive a fluid, wide and 
addictive  consonant  sound  with  any  choice  of  music  style.   All  components  are  carefully  chosen  after 
hours of listening and testing, while paying great attention to every detail affecting the final outcome. As 
every Lab12 device, suara has an ultra-solid construction with handcrafted finishing, anodizing aluminum 
face plate and retro analogue V/U meters. 

 

Do not forget that your suara is totally handcrafted with perfectly matched parts of the finest selections. 
You  have  to  know  that  to  reach  the  optimal  performance,  your  suara  needs  at  least  200  hours  of 
listening. In this time all compone

nts go from “bu

rn i

n” period to stable. 

 

 

Before  setting  up  your  new  suara,  we  encourage  you  to  read  this  manual  thoroughly  to  properly 
acquaint yourself with its features. We love music and audio devices and we have built your new device 
with emotion and personal treatment.  

 

The information contained in this manual is subject to change without notice. The most current version 
of this manual is available on our official website at  

http://www.lab12.gr

 

 

 

 

 
 
 
 
 
 
 

 

 
  
 
 

Summary of Contents for Suara

Page 1: ...Page 1 of 10 Owner s Manual suara Parallel tubes 2 x 50W Class A Power Amplifier www lab12 gr manual v1 0...

Page 2: ...Table of Contents It is yours page 3 Features page 4 Installation Placement page 4 Suara Tubes Position page 5 Front Panel page 6 Rear Panel page 7 Main connections page 8 Bias Setting page 9 For the...

Page 3: ...carefully chosen after hours of listening and testing while paying great attention to every detail affecting the final outcome As every Lab12 device suara has an ultra solid construction with handcra...

Page 4: ...allation Placement The Lab12 suara should be placed on a solid flat surface You should avoid placing it near a heat source as this could compromise the suara s performance and reliability Carefully pu...

Page 5: ...sitions Insert the tubes carefully in each position All of the tubes are marked with the position number was placed during calibration and factory burn in of suara All in box tubes are perfectly match...

Page 6: ...Ds and two VU meters The three LEDs C indicate that the device is powered on To the left of 3 LEDs you see a retro analog VU meter A You can accurately monitor the output level of left channel on dB s...

Page 7: ...IEC AC input including a main fuse holder C A pair of RCA and XLR connectors for each channel B are the inputs of signal from your preamplifier Speaker outputs for each channel A giving you the choic...

Page 8: ...kers from 2 to 4 ohm at 4ohm positive bind speakers from 6 to 16 ohm at 8ohm bind Make sure about the phase and polarity of speakers always connect plus red bind of suara to plus red bind of speaker a...

Page 9: ...to bias Use trimming screwdriver to set the voltage at 950mV DC KT150 setting from corresponding trimmer Follow the same procedure for each tube Wrong bias will destroy your tubes and possibly your am...

Page 10: ...20 Hz 25 KHz 0 9dB Input impedance 100 K ohms Recommended speakers 4 8 ohm Tube complement 2x 6n1p dual triode 2x 6n2p 4 x KT 150 Power Pentode Input sensitivity 750mV Inputs 1x line unbalanced stereo...

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