Superline+HiCap = hummmm ???

One for Richard (Dane) I think. 

I had that with my Superline/HC/282. When I put the tonearm earth onto the ground point of the 282 instead of the Superline, the hum went away.

Rega don't have a tonearm lead - I don't think?

That won't help then. Maybe an earth wire from the Superline to the ground on the SN?

Hello - thanks so far. 

REGA have the ridiculous (IMO) system of no ground wire. As per above, it grounds through one of the arm cables (clearly, not satisfactorily). 

ALBA1320 - Neither the CDX2 or the V1 were turned on. Would that matter? In any event.... thanks and I'll check.

[@mention:1566878603968759] - how did you connect the SuperLine and HiLine to your SN? Do you have that special SNAIC (270 into 180 DIN)?

It may be that the RCAs on the Rega arm are not connecting well to the Next Gen RCAs on the Superline. Have you changed the Rega to either Next Gens or better yet, BNCs?

I had a similar issue when I changed from High Output MC to a Low Output I had to change the settings on my Phono Stage and the best setting by a mile produced a loud hum.  The solution was simple if possible try moving the phono stage as far away as possible, I could actually hear the hum reducing the furter away it got. Luckily I have a fellow music lover as a partner and SQ comes before trailing wires etc.

I went through almost the same thing a couple of weeks ago, although after playing around with leads for a while in fact after a while the hum turned into rf interference. Anyway, after doing a lot of reading here I went through the following process and the hum/interference disappeared.

Firstly - swapped out the lead from the deck to the superline to check the connections were ok - slight improvement but not the solution in this case.

Restacked the  whole system being really careful with cable dressing - keeping the mains cables well away from all signal leads and making a special effort with the burndy from the XPS to NDX. Also created a bit more space behind the units to allow better cable runs.

Adding the smallest 1nf capacitance plug to the Superline (in my case probably the best improvement - with thanks to Peter at Cymbiosis who originally posted on this). Also tried different positions/runs for the lead between the arm/superline.

Connecting the earth lead from the turntable to the 282 and the earth tags from the signal phono leads to the Superline (I also checked the earth setting on the NDX which is now at chassis - but I didn't find floating made any difference.

A few things to play round with and I wish you luck....I know just how you feel!

Thanks for the suggestions..... I'll give them all a try.

ADAM - Don't know that it's a "special" connector, or not. It is, however, the proper pin configuration. I was given it by the local NAIM dealer; so I assume it's the correct one.

Finally back from a business trip, and had some time to try to deal with the problem.... JOHN S - capacitance plug had the most dramatic impact. I also moved the stage farther away from the TT. The hum isn't 100% gone..... but pretty much. With component systems (like the one I have), from what I've read/been told, you'll never get dead silence - particularly when dealing with a phono stage. Thanks again for the info.

Glad things have improved. Probably you have seen it, but if not search for the Superline Setup thread - some interesting comments generally and about about the benefits of having a capacitance plug made up at a slightly lower value than 1nf, which improves the top end a little.

Hi Paulie, good to hear the hum has disappeared pretty much. I have a Rega P9 + Superline + Hicap and never experienced any hum, dead silence to my ears, capacitance plugs having no influence on this. Maybe there is something wrong with the tone arm cable? 

the rega cartridges are susceptible to humm and theres no ground lead. It will pick up humm from any nearby powersupply.

My phono stage is now 2 ft from the TT and the nait Xs a further 2 feet away.

of course it may be something else...

SJW - I suspect you're right on this. I'm no engineer, but I think the approach of "no ground wire, have it ground through one of the right or left channel connectors" is a poor approach and one fraught with complications such as the one I'm having.  There's likely a reason most other manufacturers don't take that approach. 

Just a thought....how old is your HiCap? The earlier models provided power from socket 3 whereas later ones don't. I imagine conecting to a live socket could cause some sort of problem like hum.

Paulie posted:

SJW - I suspect you're right on this. I'm no engineer, but I think the approach of "no ground wire, have it ground through one of the right or left channel connectors" is a poor approach and one fraught with complications such as the one I'm having.  There's likely a reason most other manufacturers don't take that approach. 

My understanding is that Rega used non-conductive materials for the structure of their decks - hence a ground wire is irrelevant, there's nothing that could be grounded.

a problem was the sensitivity of the rega cartridge to hum from any nearby power supply- when i physically lifted the turntable away from the Nait Xs the hum lessened considerably . Hence a big move of all equipment away from the turntable and the phonostage was moved away too

The only time I get a hum from my Rega is when the Stageline gets too close to a power supply.  It especailly dislikes my Hicap DR

I'm on my second Rega deck - nothing ever hummed here, except yours trullyt, to the music

Most likely a faulty connection somewhere else in the chain or intereference being picked up by the SuperLine (although it's shielded, so unlikely).