Marantz av20 audessey x setup tuning problems

[TLS Guy]

Pics. Sorry its mess right now. Been trying diferent wires and need to clean it back up once I fix this.

You are falling into a common trap, of adding and adding grounds, that seldom solves the problem.

You now have a complex system, and to make this work and have a silent background, then you have to design a ground plane and that takes skill and expereince.

It is clear to me that plate amp ground is not at the same potential as the rest of your system. That is caused by a resistance to ground between the receptacle the plate amp is plugged into and the rest of the system. So you best bet is to power that plate amp from a cable going back to your main system.

The more complex the system, the more likely you are to run into ground loops.

One approach might be to lift the ground in the xlr plug at the plate amp connection.

You usually solve these problems by removing grounds and not adding them paradoxically.

 

[ssmokeyy]

You are falling into a common trap, of adding and adding grounds, that seldom solves the problem.

You now have a complex system, and to make this work and have a silent background, then you have to design a ground plane and that takes skill and expereince.

It is clear to me that plate amp ground is not at the same potential as the rest of your system. That is caused by a resistance to ground between the receptacle the plate amp is plugged into and the rest of the system. So you best bet is to power that plate amp from a cable going back to your main system.

The more complex the system, the more likely you are to run into ground loops.

One approach might be to lift the ground in the xlr plug at the plate amp connection.

You usually solve these problems by removing grounds and not adding them paradoxically.

I did try changing the outlet the plate amp is plugged into. Still had the noise. I could try to plug it into the apc conditioner but my fear is that it wont be able to pass the amps needed to drive the amp fully.

Im trying to get what u mean by the resistance to ground between the receptacle and the system. Like meaning it could be loose or bad quality outlet. Every outlet is heavy duty or ps audio 20 amp model. But again I have tried changing the outlet the plate amp is plugged into and still has the noise but the other plate amp does not has noise.

I have been looking into xlr ground lift devices. Not sure what model is a quality part. Never had to use one or sell one before. Do u have any u recommended?

 

[TLS Guy]

I did try changing the outlet the plate amp is plugged into. Still had the noise. I could try to plug it into the apc conditioner but my fear is that it wont be able to pass the amps needed to drive the amp fully.

Im trying to get what u mean by the resistance to ground between the receptacle and the system. Like meaning it could be loose or bad quality outlet. Every outlet is heavy duty or ps audio 20 amp model. But again I have tried changing the outlet the plate amp is plugged into and still has the noise but the other plate amp does not has noise.

I have been looking into xlr ground lift devices. Not sure what model is a quality part. Never had to use one or sell one before. Do u have any u recommended?

You never ;plug power amps into conditioners. Those are for the fragile low power circuits.

No, I don't because I generally make my own cables.

This one is available from B & H photo that are a good outfit. That is what to try next.

 

[AcuDefTechGuy]

Integra did not make the noise but at the same time I added 3 amps when I picked up the av20. The starke sound 8 channel and both plate amps are new. I used a crown xti2002 for the rear subs before. No noise with the integra and crown amp together.

Does the Integra have a 2-prong or 3-prong power cord?

My Yamaha CX-A5100 and RX-A3080 both come with 2-prong cords as do some other AVR/AVP.