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HELP I think I have an electrical issue??

A few months ago I had 2 20amp dedicated lines with hospital grade duplex's installed. All was well with my Bel Canto Ref1000 mono's. Well a few days ago I just got a pair of Genesis m60 tube amps. I was noticing a clicking noise coming through my speakers. I first noticed this when I was just warming up the amps with no source on. Then I also noticed the clicking when a source was on with music playing.

So it turns out that the clicking noise is my electric ignition of my gas furnace, is somehow playing through my speakers (Or maybe its just one of them, not exactly sure yet) This is a very strange and annoying. If anyone has any ideas please let me know!

Tim
tmesselt
ngjockey
1,042 posts
 
First, ensure the pilot assembly and ignition module are grounded. The pilot can be grounded by using a double insulated or bare, solid copper wire from a mounting screw directly to the "GND" terminal on the module, if so equipped, otherwise to chasis. You can also ground the neutral side of the 24V transformer.

If that doesn't work, consider an isolation transformer.
sns
3,617 posts
 
Your best bet, do all the above! I've done everything but the balanced cable (too much SE equipment I love), clean AC is quite an advance in sonics.

Also, if not previously mentioned, make sure you have a good solid house ground.
timrhu
2,779 posts
 
If you put the previous amps back in place and the problem is gone I would blame the Genesis amps. Like I said, not necessarily that they are malfunctioning, but that they just don't filter out issues with your AC. Maybe they are just more susceptible to noise on the AC line.
I have had amps that showed quirks where others did not.
BTW, what did you do with the Ref1000s?
jea48
4,678 posts
 
Hevac1,
Hospital grade receptacles do not have to be isolated ground type receptacles.

The ever so popular Hubbell HBL 8300H hospital grade duplex receptacle

Hubbell IG8300 hospital grade duplex receptacle.
sfstereo
215 posts
 
I think you have an airborne RFI issue as mentioned by a couple of other people. The tube amp may be more susceptible to RFI than the Bel Canto due to the open chassis design of most tube amps.
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