NOISY XPS

Posted by: David Sutton on 05 February 2002

I have a new XPS with my CDX and I have noticed an audible hum coming from it. This is audible in that I can hear it when sttod 10 feet away from it. Is this common or should I be planning to drive 100 miles to take it back to the dealer?

Any advice would be much appreciated.

David

Posted on: 05 February 2002 by garyi
Dirty mains + big transformers = hum.

It should sound different depending on what electric in your area is being drawn.

Its in the manual.

Posted on: 05 February 2002 by Justin
Would you have a halogen light on anywhere in the house? This always makes my transformers hum like crazy?

Judd

Posted on: 05 February 2002 by garyi
Oh Bugger, I hope that ain't the case with mine, in the living room alone there are 9. Bedoom 3, hall way 3.

Doh!

Mind you it ain't that bad.

Posted on: 05 February 2002 by J.N.
David,
My 135's used to buzz like crazy.

Only went away when the local H.T. supply was overhauled and serviced.

No use complaining to your supplier. All they have to maintain is voltage tolerances. Mains distortion doesn't count.

The level of buzz, should vary throughout the day. Otherwise, the item may be faulty.

Bottom line is as stated in other replies:-

Big toroidal transformer plus shit on the mains, equals; buzzing.

Posted on: 05 February 2002 by David Sutton
Sorry I did not mention that the system is on a dedicated mains spur through a 15amp round pin (UK type)plug. The hook up is then through a Grahams Hydra type lead. So the mains should be fairly clean.

Sounds like a trip to the dealer is on the cards......

Posted on: 05 February 2002 by sonofcolin
Do you live near any large telecoms transmiters?

My 140 buzzed like hell when I moved to DC. I thought it was a faulty voltage conversion. Took it to local dealer and no buzz!

Naim USA fitted it with some filtering caps and voila, no buzzing. I know, not the same as XPS, but worth checking out. Talk to Naim before you take the long drive.

Good luck

Posted on: 06 February 2002 by GC
does hum generally increase on ferrous stands and is it less of a problem on non-ferrous, ie fraim, quadraspire etc? there has got to be a reason why more inert substances like wood are starting to be used more and more.....
gus
Posted on: 06 February 2002 by MarkEJ
quote:
...there has got to be a reason why more inert substances like wood are starting to be used more and more...

My impression is that wood is actually used less & less, while that which is marketed as "wood finish" is usually surfaced MDF.

Not that there is anything wrong with that, IMHO. Back in the days of yore, MDF made its first appearances under the "Medite" stage name (thank you Mission...) and is now manufactured to far greater consistency in terms of density, thickness, etc. Add to that the availability of very precise CNC machining processes, and the current fashion for "nicotine cherry" veneers with brushed alloy trim... soon everything will be curved!

I remember reading the Isobarik DMS/PMS pages in an early 80s Linn brochure, which had pictures of cabinets in various stages of assembly. I seem to remember the back panels were fixed with screws in cups! -- something very nice about that, but when did you last see it on a new item?

Best;

Mark

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