Outlet Order ???

Posted by: Naheed on 20 January 2002

Music Works suggest connecting components top-down (cdp/supplies/amps), where as naim suggest the opposite (amps,supplies,cdp)...

I can see the logic of the Music Works approach, get the delicates fed first.

Anyone any specific experiences/preferences ?

naheed

Posted on: 20 January 2002 by dave simpson
Hi Naheed,

Over here in the States reverse hierarchy appears to win. Sounds best in a Wiremold strip or wall outlets with an all-Naim rig anyway. I hear our Canadian friends prefer the opposite though.

The one exception (for me) is the NAPSC. I much prefer it out of the sequence and plugged into the last outlet on my wiremold. (FWIW, worse when NAPSC plugged into another circuit altogether) Rig is all Naim and NAPSC is for my 102.


regards,

dave

Posted on: 20 January 2002 by Naheed
NAPSC > i recently pluggedmy napsc into the MWorks blocks with very good results, but sadly the addition of another hicap means all six slots are gone !!!

Strange as everyone else hear seems to relegate the napsc nasty to another socket or spur if possible.

naheed

Posted on: 20 January 2002 by dave simpson
"Strange as everyone else hear seems to relegate the napsc nasty to another socket or spur if possible."

My results might be caused by the only other circuit that the NAPSC power cord reaches may be on a different phase with respect to the Wiremold circuit.


It's a noticeable degredation though when plugged "in sequence" or "different circuit" as opposed to plugged in the end of the Wiremold strip. Less tuneful.

regards,

dave

Posted on: 20 January 2002 by Martin Payne
quote:
Originally posted by Naheed:
Strange as everyone else hear seems to relegate the napsc nasty to another socket or spur if possible.


Naheed,

the NAPSC puts noise into the mains, and the MW stuff is supposed to deal with mains-borne noise.

Perhaps not a coincidence?

However, I don't really see how this might work unless the leads to the equipment have been replaced with MW, too?

cheers, Martin

Posted on: 21 January 2002 by Naheed
Martin, i did rewire my napsc with a MWorks IEC sometime ago - the effect was very positive (same effect as on other components), then went back to the original naim lead for comparison - but have'nt reverted back yet (and can't now - no spare lead or socket)

naheed

Posted on: 21 January 2002 by Peter Stockwell
Richard,

have you tried their distribution block and cables ?

Peter

Posted on: 22 January 2002 by Peter Stockwell
Richard

I looked at the mains cables shown on their site, they look like they are made with 'eupen' wire, and it sounds like it from the description. Do you know if this is the case ?

Are you using their mains cables in your system ?

Posted on: 22 January 2002 by herm
kemp kit

Hi Richard,

could you perhaps elaborate the above, if you have time, like how the "ferite" material and the filter affects the sound? I'm not too technical, alas.

I'm interested, as I was actually thinking of getting a extension line (I saw a nice 7 outlet Van den Hul thing), but on the other hand, what good does two meters of thick wire do if the wiring in one's place is terrible, anyway.

Also, as I was reading the material on the Kemp power source, I was wondering, aren't Naims PSU's supposed to cover a lot of these disturbances, too?

So that's a bunch of really unenlightened questions, no doubt. frown

Herm

Posted on: 23 January 2002 by Rico
Hi Naheed

I recently played around with order, and found I much preferred MAINS:amp/psu/cdp to MAINS:cdp/psu/amp. Much more pacey and coherent, at least in terms of my system the other night.

Not sure how much bearing the PDL tapon plugs we use down here help...

Rico - SM/Mullet Audio

PS - noted mention of Ferrite Rings (holds up string of Garlic and makes sign of the cross) - get them away from me! Apart from their uses in RFI problem areas, they Kill the music. Arghhh! big grin

Posted on: 23 January 2002 by Naheed
I've also swapped in preference to MAINS:amp/psu/cdp, more coherence is the best word to describe it.

Anyway enjoyed the pics on your website...

Is your system up and running yet ?
Any new upgrades ?
Did you get Peter C around for setup tips ?

naheed

Posted on: 23 January 2002 by Craig B
quote:
I hear our Canadian friends prefer the opposite though.

Not all Canadians. I use the Wiremold and prefer mains>amp>ps>tuner>cdp>tt. I haven't done any comparisons since installing the Wiremold a couple of years ago, however, the same order worked best with the modded Hammond that I used prior.

I really didn't notice much difference in the order of the sources wrt each other, but things did sound better to me with the amps/ps upstream.
I assume that the CD3-5 puts more junk onto the mains than does the Axis power supply, however, I figured that the tt would be less affected by the cdp noise and so opted to put it last.

I still don't see the logic behind the differences though. It seems to me that all of the components would 'see' the same mains current with the same noise (original incoming and component induced) riding on it at the same time (allowing for different load requirements) ie. there really is no upstream nor downstream.

Anyone have any thoughts on this?

Craig

Posted on: 23 January 2002 by ken c
I still don't see the logic behind the differences though. It seems to me that all of the components would 'see' the same mains current with the same noise (original incoming and component induced) riding on it at the same time (allowing for different load requirements) ie. there really is no upstream nor downstream.

craig, i doubt all components would "see the same current" as they have, in general, different impedances. because the components are affectively connected in parallel as far as mains supply is concerned, you would expect that that they would all share the same pd, but i guess from one component to the next, there is a (albeit) small impedance, breaking the neat parallel load model.

thats my take. could have mentioned something about "earth", but i find i dont reallt understand this earth business -- and postings i see here do not paint a consistent enough message to learn from.

anyhow, keen to hear other contributions.

enjoy

ken

Posted on: 23 January 2002 by dave simpson
From a non-engineering type (yours truly): I'd love to see the explanation for the differences exhibited by AC plug order. I always thought AC meant "alternating" so there's no "first" or "last" with respect to any given plugs "position" on the line yet there clearly seems to be a preference (sonically) indicating differences.

Can someone explain in non-technical terms why this is?

TIA,

dave

Posted on: 24 January 2002 by Peter Stockwell
Dave,

have a look over this topic.

voltage drop

maybe something in there ?

Peter

Posted on: 24 January 2002 by dave simpson
Thanks Peter.


dave

Posted on: 24 January 2002 by Craig B
I had followed the 'Dedicated Mains Spur' thread and, although it was very informative regarding seperate spurs vs. rings (and separate spurs for amps vs. pre-amps vs. sources), it didn't really get into the reasons for Naim's preference for a single spur to a single or double wall socket with a multi-socket block (power bar/strip) on the end. Nor did anyone really get into why the plug in order of amps vs. sources into such a device would make any difference.

I do recall this subject being discussed quite a bit on the old forum. Does anyone remember any of the technical reasons for Naim's preference?

Craig
P.S. I have posted this question on the 'Dedicated Mains Spur' thread as well.

Posted on: 24 January 2002 by dave simpson
I had hoped Peter's link would explain what's going on but unless I've missed something... it doesn't.

According to the arguments in the thread, eleviating some of the load off a given AC line should make for cleaner power ( equaling better sound?) for the remaining boxes yet most of us find the opposite. I ran 4 seperate 20 amp lines in my Linn days until Nana stopped by and plugged all my gear into one of those lines and the room's jaw dropped!

Still curious about the plug sequence also. I mean if the juice alternates directions every 60 seconds here in the states there is no beginning or end so why should amp first sound better than source first.

regards,

dave

Posted on: 24 January 2002 by Peter Stockwell
Dave,

I played around with the order a little last night, and it seems as if the CD player sounds better after the preamp, but the turntable needed to be plugged in aheadof the preamp. Nothing really conclusive either way. The system sounds better with the amp on it's on line, but I haven't tried the amp and the pre-amp together on the same line and the sources alone, yet.

There's a propogation speed along a wire for electricity. There couldn't possibly be audible effect of the components charging cycle being out of phase relative to each other, could there ?

Peter

Posted on: 24 January 2002 by dave simpson
"There couldn't possibly be audible effect of the components charging cycle being out of phase relative to each other, could there ?"


After witnessing first hand, a Naim cds (mk1) being more sensitive to the surface it sits upon (vs. an LP-12)... I'll buy anything.

regards,

dave

Posted on: 24 January 2002 by Peter Stockwell
david,

Well there's a lot of difference to sensitivity to vibrations and charging cycles .... but, I certainly don't know the answers.

Peter