Meridian Unplugged - Powered by MrTechGuy.co.uk Forums Thread Like Summary - 502 input switching noise

Hi all,

I've been happily using my 502 with a pair of M2s for a few months now.

I recently bought a new (to me) phono stage, a Roksan ArtaXerxes X, and now when I switch to the input for the phono stage I hear a moderately loud pop. I previously had another external phono stage (Musical Fidelity X-LP) connected on the same input with no such noise. In addition this is the only channel on which I get any noise when switching inputs.

So my question is: is this anything to worry about? Has anyone else had experience of this?

Thanks in advance!

Peter

It’s not necessarily a solution; but, many years ago I suffered from a similar popping noise from my 500 Series kit.

The culprit was a twin set of wholly carbon constructed VanDenHul RCA interconnects. Replacing them with something less ‘esoteric’ from VanDenHul resolved the issue.

This could be a difference in ground levels, or a DC offset in the phono stage.

As above, the offset may have levelled out over time, this points to (very) tired power supply capacitors.

You could try linking the earth points on the phono stage and the 502 to make sure there is no difference in ground levels, but this could lead to an earth loop hum, but cheap and easy to try.

All the best,

Steve