SalemChiro
Hi guys,

Has anyone experienced noise coming from their SubM HP after your AVR is powered down?  This occurs a few times a week and will continue unless I turn off the power for an extended period of time.  I've tried to flip the SubM power switch off, then right back on but it still hums.  I've also unplugged the XLR cable to see if the noise is a signal issue but still happens. 

The noise is like a low hum or echo sound that gets louder if I turn up the gain.?.?.

The sub is incredible to listen to, I'm just wondering if I'm doing something wrong, if it's an amp issue, or is this normal.

Cheers,
Sean    
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Mark_Seaton
SalemChiro wrote:
Hi guys,

Has anyone experienced noise coming from their SubM HP after your AVR is powered down?  This occurs a few times a week and will continue unless I turn off the power for an extended period of time.  I've tried to flip the SubM power switch off, then right back on but it still hums.  I've also unplugged the XLR cable to see if the noise is a signal issue but still happens. 

The noise is like a low hum or echo sound that gets louder if I turn up the gain.?.?.

The sub is incredible to listen to, I'm just wondering if I'm doing something wrong, if it's an amp issue, or is this normal.

Cheers,
Sean    


Hi Sean,

When you say you unplugged the XLR cable, which end of the cable did you unplug?  Have you checked the plug the SubMersive HP is on to see if it has a connected ground?
Mark Seaton
Seaton Sound, Inc.
sales@seatonsound.net
773-290-8436
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SalemChiro
Hi Mark,

I unplugged the XLR cable at the sub.

The house wiring in my HT area is all new.  I haven't checked the ground at the outlet but I'll do that tonight and report back.

Cheers,
Sean
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SalemChiro
I checked the outlet and it has a proper ground.

When the noise happens again is there anything you suggest I check?

Thanks,
Sean


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Mark_Seaton
Hi Sean,

Assuming there are no red lights flashing if it happens again, remove the XLR from the amplifier (be sure not even the adapter is connected if used) and then press the MUTE button so it is out and see if the noise goes away.  Also work the power cord near the amp around to insure it's not a bad connection with a ground at that end (which might normally cause a single flash of the red LED for about 10 times after powering up).  If you see it again us an e-mail or give a call so we can get it sorted more directly.

Mark Seaton
Seaton Sound, Inc.
sales@seatonsound.net
773-290-8436
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