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Static from Aesthetix phono stage when tt not on

I have a Rockport Serius II and Aesthetix IO Signature which are connected by a modest ground. Each outlet is dedicated and the audio service has a isolated ground to two ground bars.

I got the tt up and running with new audiophile vinyl and the sound was black in background, clear with high impact and dynamics and plenty of detail.

Everything seemed great for the first round. I weighed the stylus pressura and brought it within tolerance. There was NO STATIC in the music or when the music was not playing.

Today after running the Aesthetix for a day and after playing about 10 lp's there was static building up even when the TT was turned off.

I really don't know where to look for this one.

Is it the phono stage? The 25' Jena interconnects laying on the floor? The TT?

It does not appear to be the Tenor's as they have no noise in other channels.

Thoughts on the problem and identification pattern appreciated.

Bill E.
lakefrontroad
rcrump
427 posts
 
Likely the Io and if in both channels it is probably a power supply tube unless you are running two supplies as Albert does.....It sure wouldn't hurt to get the ICs up off the floor either.....I used to have four Rockports in my neighborhood including two similar to the System II Sirius and nobody has complained of static problems.....
tireguy
1,964 posts
 
Bill- Do the problems ever end! Makes you wonder if it would be easier and cheaper to maintain the 512tr!!! Though I suppose you couldn't use that when its snowing ;) If you get the bugs out of your rig I am sure you will need to find something else that is systamtically problem prone, its always a challenge to over come! ~Tim
lakefrontroad OP
302 posts
 
I'm embarrased to say that I'm having a hard time recreating the problem. Mike Lavigne reminded me that the platter is not conductive so that every time I take a record off it builds up static in the Rockport. Also, he suggested that the central ac may be creating some line static when it cycles on.

I'm going to take a lot more time listening and do my best to isolate the issue.

I'll try your recommendations and get back to this thread as soon as I know more.

Bill E.
extremephono
123 posts
 
Hi,
Looks like by having 2 ground bar, you created a ground loop. Try to use single ground for audio gear.

Using a silver-based ground wire helps tremendously, especially if you can find an 8ga silver litz wire for ground.

Silver plated ground bar helps further. Common Home Depot ground bar may be zinc plated and
have dielectric effect.
arooj
12 posts
 
Bill, you wouldn't want me to come over with my Aloia preamp w/phono stage now, would you? (if you don't tell Andy, I won't ;~). Although I'm not up-to-date with your wiring scheme, I thought that you had planned a dedicated (supplementary) earth ground for the system, via the dedicated circuit box - the AC should not be an issue if you've got this. I believe Extremephono has a point about possible ground loops - one pole in the ground is enough.

As you haven't mentioned any problems with playback via the AAC-II, your efforts should concentrate on the IO --- power supply vs. grounding scheme.

Good luck, and be careful if you go poking around (I mean in the IO unit).

Arooj
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