PSU upgrades for LP12

I read a lot about the sonically wonders of a DC motor kit (Origin Live) and Linn Lingo and Naim Armageddon power supplies.
I´m currently using a Valhalla supply, but what can i expect from either of those supplies? Can anybody give me a technical description of why a , say, Armageddon should be better than a Valhalla? The valhalla is Quartz controlled, the Armageddon is an OVERdimensioned toroidal trannie with a dropping resistor.

Thanks for your answers, Peter

I can't give you technical advice but i would advise you
to enjoy what you've got because there is a lot of mumble
jumble written about numerous linn upgrades.
"Peter" wrote in message
...
I read a lot about the sonically wonders of a DC motor kit (Origin Live) and
Linn Lingo and Naim Armageddon power supplies.
I´m currently using a Valhalla supply, but what can i expect from either of
those supplies? Can anybody give me a technical description of why a , say,
Armageddon should be better than a Valhalla? The valhalla is Quartz
controlled, the Armageddon is an OVERdimensioned toroidal trannie with a
dropping resistor.

Thanks for your answers, Peter

In article ,
Peter wrote:
I´m currently using a Valhalla supply, but what can i expect from either
of those supplies? Can anybody give me a technical description of why a
, say, Armageddon should be better than a Valhalla? The valhalla is
Quartz controlled, the Armageddon is an OVERdimensioned toroidal trannie
with a dropping resistor.

Assuming it goes round at the right speed, the only other thing might be
external magnetic fields generated, in the main, by the transformer. Hence
the toroidal which has a low field. But if you haven't got any audible
induction from the PS, you should be ok.

--
*It's not hard to meet expenses... they're everywhere.

Dave Plowman London SW 12
RIP Acorn

"Dave Plowman" wrote in message
...
In article ,
Peter wrote:
I´m currently using a Valhalla supply, but what can i expect from either
of those supplies? Can anybody give me a technical description of why a
, say, Armageddon should be better than a Valhalla? The valhalla is
Quartz controlled, the Armageddon is an OVERdimensioned toroidal trannie
with a dropping resistor.

Assuming it goes round at the right speed, the only other thing might be
external magnetic fields generated, in the main, by the transformer. Hence
the toroidal which has a low field. But if you haven't got any audible
induction from the PS, you should be ok.

--

Why is it so difficult/expensive to achieve a steady sustained motor speed?
There's quite a body of measured evidence that suggests variations between
PSUs, and this points to 2 things - average and sustained speed.

If it's not difficult why do people spend so much money on things like
Lingos, Origin Live PSUs etc?

I do (of course!) accept that placebo effects arise in all matters hifi, but
things like pitch and stability are quite easy to listen for - so there must
be some truth in these exotic PSUs?! I've never noticed noise from a power
supply but I can hear differences in stability (say a decaying piano note) -
even on quite expensive turntables.

Rob

In article ,
RJH wrote:
I do (of course!) accept that placebo effects arise in all matters hifi,
but things like pitch and stability are quite easy to listen for - so
there must be some truth in these exotic PSUs?! I've never noticed noise
from a power supply but I can hear differences in stability (say a
decaying piano note) - even on quite expensive turntables.

It's also quite likely that wow/flutter is recorded on the LP.

--
*A 'jiffy' is an actual unit of time for 1/100th of a second.

Dave Plowman London SW 12
RIP Acorn

In article , RJH
wrote:

"Dave Plowman" wrote in message

Assuming it goes round at the right speed, the only other thing might
be external magnetic fields generated, in the main, by the
transformer. Hence the toroidal which has a low field. But if you
haven't got any audible induction from the PS, you should be ok.

--

Why is it so difficult/expensive to achieve a steady sustained motor
speed? There's quite a body of measured evidence that suggests
variations between PSUs, and this points to 2 things - average and
sustained speed.

There will be variations in 'drag' as the details of the music change. This
tends to act to slow down the turntable. However this effect should be
quite small. Also, with a belt drive turntable I'd assume that - if it was
correctly built in the first place - that the main factors that determine
how much effect you get are;

1) elastic behaviour of drive belt.

2) elastic behaviour of the turntable suspension to torque variations.

i.e. I would hope the motor and its PSU would have little effect.

I'd be interested to see measurements of this, though, as it would be easy
to measure givin test tonebursts. So far as I can recall, no-one has
published measurements of this.

If it's not difficult why do people spend so much money on things like
Lingos, Origin Live PSUs etc?

Because the magazines tell them how good they are?

Perhaps because the original motor is poor?

Can avoid mains variation induced pitch alterations?

They simply 'like them'?

No idea, really. :-) For all I know, the motors used in some turntables
are so poor that this really matters... However I'd be inclined to worry
about choosing such a motor in the first place if this is the reason.

I do (of course!) accept that placebo effects arise in all matters hifi,
but things like pitch and stability are quite easy to listen for - so
there must be some truth in these exotic PSUs?! I've never noticed noise
from a power supply but I can hear differences in stability (say a
decaying piano note) - even on quite expensive turntables.

Do you mean wow/flutter, or do you mean dynamic changes due to drag? If so,
how are you establishing this as the cause?

Slainte,

Jim

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