2. analog
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LP12- Power Supply- Need education

I have read a lot about different options to upgrade the analogue power supply.
A phono stage need to amplify micro signal would require very good power supply to ensure there is minimal noise interfere with the signal.
I read about Lingo and other power supply articles, however they never mentioned about the science behind it.
How could a power supply powering a motor will introduce noise to the cartridge especially belt drive?
How do you measure the noise when playing a record?
Or would  the power supply provide a more stable rotational speed, my speed measurement on the turntable shows very consistence rpm once it is playing?
I really do not understand why a Lingo power supply cost so much but cannot provide an improvement with a measurable results.
Could someone educate me.
msnpassion

Showing 4 responses by msnpassion

msnpassion OP
5 posts
 
Great reply.
The vibration from power supply 'Ripple" should be measurable. I believed it can be quantified as a frequency rate and the intensity of the ripple.
Why there is no such articles or measurement being published about the ripple effect with Lingo and without Lingo as a comparison?
How much ripple would start to have audible effect? What would be the threshold?
If we use DC- battery power supply, it will eliminate the vibrations generate from AC to DC, am I correct?
How could a Lingo power supply will cost an arm and a leg to make given the technology and parts are now available at a reasonable cost.


msnpassion OP
5 posts
 
Are u implying the start-up of the turntable will generate most of the noise and thereby it will not eliminate as time progress (Newton Law: Conservation of energy)
If this is the case, why can't we manually turn the platter during start and let the low torque take over once it is running which consumed minimal voltage during normal operation.
This is like Nottingham turntable spacedeck, if I remember correctly
msnpassion OP
5 posts
 
Hi Dave,
Could u tell us about the Klimax upgrade?
I have to say I never feel the LP12 sound stable, my direct drive t/t sounds better and less complicated to setup.
I felt the construction of the LP12 is flimsy and not exactly well made.

There are so many new entries t/t to the market in the last 10  years.
I am not sure how well the Lp12 lived up to the modern design.

msnpassion OP
5 posts
 
Do you mind if I ask how does Open Loop Controller work? 
If it is an open loop, it does not need a controller since there is no feedback and therefore no correction is required.
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