background image

Page 6

should then be run for approx 3 days under load (i.e. turning 
the platter) to free it up from vibration and to “bed in” the 
bearings.

Like most turntable manufacturers we recommend that you 
leave the turntable running between changing records as this 
reduces the belt wear that occurs with constant stopping and 
starting.

N O T E S   O N   S P E E D   S T A B I L I T Y

If you measure the speed without a needle on the record the speed will 
not be perfect. The speed should only be set with the stylus tracking 
the record. If you don’t do this, the record will run slow once you put 
the stylus on the record.

If you measure the speed within 30 seconds of putting the needle on the 
record the speed will not be perfect as it takes a while to settle down.

Some people make the mistake of constantly watching the speed before 
the deck has settled down and the needle has been on the record for 
a  good  2  minutes.  Strobes  are  very  accurate  and  the  slightest  speed 
variation is picked up. 0.03% variation is observable which is over 30 
times the accuracy of mid-priced decks on the market.

N O T E S   O N   M O T O R   &   S P E E D   S E T T I N G

-Do not use the power supply for anything other than the dc 
motor or the power supply is highly likely to be irreparably 
damaged and you could also damage the equipment you are 
plugging it into.

-The motor and main bearing will take at least 4 days to fully 
run in and sound it’s best. For this reason it is best to do a final 
speed check at the end of this period.

The speed stability of your deck will be excellent once 
everything has settled down in a listening session. 

When checking speed

 - Be aware that the speed is subject 

to temperature variation. This is due to oil thickening as the 
temperture drops. 1 degree centigrade drop in temperature 
results in a 0.1% drop in speed ( a 5 degree drop will be 0.5% 
slow).  0.5% speed drift is barely noticable to the average 
listner so this is not significant. Rega decks used to run 1% fast 
all the time to put things in perspective. 

The ear is less tolerant to music running slow than it is to 
fast. For this reason it is worth setting the deck to run very 
slightly fast at your average room temperature. Most houses 
are centraly heated and maintain the temperature such that 
significant variations simply do not occure.

Note that the main bearing and oil can take 2 hours to reach 
operating temperature if the deck is left in a cold room. The 
air in the room may warm up quickly but the metal in the 
turntable will take a lot longer. For this reason it is not worth 
constantly changing speed settings for absolute accuracy.

It is worth explaining that absolute speed accuracy is easy 
to achieve at the expense of sound quality. The ac motors, 
common to most decks are not prone to speed drift - however 
they do inject a great deal of vibration. This, sadly is never 
measured in technical reviews or people would be a lot wiser. 

The subjective effect of vibration is highly detrimental to 
sound quality when compared to fractional speed drift. For 
this reason we prefer to offer superior sound quality rather 
than the flawed illusion of technical perfection.

Further to this it is worth adding that we have experimented 
with the latest highly sophisticated dc speed controls (£1000 
plus trade cost) and found that although they hold speed with 
unerring accuracy, the sound and dynamics of the music are 
degraded to such a degree that a little speed drift is far more 
preferable.

Note that on some flat belts you can get very significant change 
in speed just by turning it inside out so mark which side you 
use.

F I N A L   C H E C K S

Your turntable is now ready to use. The following checks make sure 

that you have set up the turntable correctly.  

 

The  motor  pulley  must  not  foul  the  underside  of  the 
platter and should be inside the platter rim.

 

The  tonearm  should  be  set  up  with  correct  VTA  i.e. 
the tube should be approx parallel to the surface of the 
record – see the tonearm instructions about this as it is 
important to get the right sound and is often a matter of 
experimentation.

 

With the tonearm and cartridge mounted, check that the 
platter is level – if not, then level it by levelling the table 
or surface that the deck stands on. If this is not possible 
then use a combination of the height adjuster and cork 
disc(s) placed under one of the rubber feet of the deck. 
We understand that this may not seem the most elegant 
solution  but  threaded  adjusters  would  sacrifice  sound 
quality significantly.

 

Checking the platter

 

 The platter spins freely and does not touch 
the  motor  pulley  or  anything  else.

  If  the 

platter catches on the top of the pulley you 
can adjust the height of the bearing house 
by unscrewing it and threading it upwards. 
This is very rare.

 

CHECKING THE MOTOR

 

Check  that  the  motor  housing  is  not 
touching the plinth at any point.

 

Check that the motor is tuned correctly as 
above.

 

Check that the belt is not rubbing on either of the flanges on the 

top and bottom of the spindle. If it does try tightening the belt or see motor 
tuning.

  M A I N T E N A N C E   O F   T U R N T A B L E

To clean the deck, use a soft lint free cloth and wipe gently – if you have 
grease marks etc then you can use a general-purpose anti-smear polish such 
as Mr Sheen but only if necessary – wax furniture polish is to be avoided and 
if possible use an anti-static type of polish. Do not spray the polish on the 
turntable as it may clog up the cartridge etc but rather spray it onto a soft 

Summary of Contents for AURORA GOLD

Page 1: ...L E OWNERS MANUAL Read carefully and do not tighten bolts you may think are loose Latest version of Aurora Gold turntable shown with Origin Live upgrade mat which can be ordered as an optional extra to upgrade the deck Use belt on lower groove of pulley ...

Page 2: ... com under general information then technical support from the drop down list The instructions are written for owners with no previous experience of turntables Some sections may therefore appear lengthy as they need to cater for all potential questions When reading the instructions refer to the various diagrams for part names and clarity The deck can take approximately 15 minutes to set up dependi...

Page 3: ...ists between pod tube and edge of plinth outer ring CURVED DAMPER SUB CHASSIS PLATE BOTTOM SUB CHASSIS PLATE BEARING HOUSE PLINTH OUTER RING PLINTH INNER PLATE NOTES Trouble shooting notes on the sub chassis optional reading 1 The sub chassis is attached to the bottom sub chassis platee by one pivot bolt the two plates should be free to swivel and are loosely restrained by an anti rotate bolt this...

Page 4: ...nd become more level Oil the bearing with the small oil bottle supplied run approx 10 drops of oil into the top of the bearing house Insert the spindle Wipe the platter spindle surface first to ensure that it is absolutely clean and very gently insert it into the bearing house If the oil does not overflow when the spindle touches the bottom then try 2 drops at a time till you achieve overflow wipe aw...

Page 5: ...screws are accessible at the rear of the control box See diagram above To increase speed turn the 25 turn presets clockwise until the speed changes If the screw reaches the end of it s travel you can usually hear a faint clicking You will not damage the preset by over turning it as slippage occurs The pre set screw will not fall out and may need a fair number of turns to set the correct speed so k...

Page 6: ...that absolute speed accuracy is easy to achieve at the expense of sound quality The ac motors common to most decks are not prone to speed drift however they do inject a great deal of vibration This sadly is never measured in technical reviews or people would be a lot wiser The subjective effect of vibration is highly detrimental to sound quality when compared to fractional speed drift For this rea...

Page 7: ...around 2 4 days continuous running They are sometimes a little noisy to start with It is best to run in the motor on full power with the belt off Most importantly you can tune in the motor to give minimum noise by adjusting the tightness of the 3 small Phillips screws next to the motor pulley The best way to set their tension is to tighten the screws until they just nip tight Then back off all 3 s...

Page 8: ...se note that the occasional rewired arm can make a slight rustling noise through the speakers when it is lifted across the record This should not be a cause for concern as it is only caused by microphony of the internal litz cable under normal playing conditions this is inaudible The earth lead should be connected to the earth of your pre amplifier or amplifier This earth lead is best separated slig...

Page 9: ...in nylon filament line through the small gap of the wire eye to allow the ball weight to hang freely The adjustment ball is initially set at just under three quarters of the way out along the silver rod this is approx the correct position for most cartridges If you wish to increase the side bias force then unclamp the ball using a 1 5mm Allen key and the ball further outwards To decrease the side f...

Page 10: ...rd collection You can increase the height of the lift lower arm rest by loosening the small allen screw in the side of the curved arm rest and raising it slightly finish by retightening it in position The sound of new arms and rewires will improve significantly over the first 2 weeks as items bed in and arm wires burn in Fit the cartridge to the arm using an alignment gauge and ensure the headshell w...

Page 11: ...rrectly so that the audio cartridge can do it s job properly For instance a turntable out of level can produce side forces on the pickup cartridge tip that will wear it more on one side than the other as well as have a slightly degrading effect on the wear of your records L E V E L N E S S When a turntable goes out of level the platter bearing performance and the arm s dynamics specifically anti sk...

Page 12: ... the stylus s safety cap in place Set tracking force at nominal then carry out the tangency alignment procedures then the azimuth Donotdeviatefromthissequenceaseachstepaffectsthesubsequent one change the order and the setup will be wrong T R A C K I N G F O R C E This adjustment is carried out on the counterbalance weight of the tonearm or spring dial if one is in place At this point use your trac...

Reviews: