Re: EP600 / Please Explain Grounding - Again
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Joined: Apr 2007
Posts: 4,877
connoisseur
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connoisseur
Joined: Apr 2007
Posts: 4,877 |
If I unplug the sub cable from my denon when everything is on my ep500 thumps
-David
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Re: EP600 / Please Explain Grounding - Again
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Joined: Feb 2005
Posts: 5,211
axiomite
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axiomite
Joined: Feb 2005
Posts: 5,211 |
'We are spirits in the material world....' I've heard 'em in the past and really didn't think much of it, about like hearing the same thud whenever a microphone is plugged or unplugged during a stage performance.
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Re: EP600 / Please Explain Grounding - Again
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Joined: Dec 2003
Posts: 6,331
axiomite
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axiomite
Joined: Dec 2003
Posts: 6,331 |
Pretty sure this is normal behavior. You want to, at the very least, turn the the volume down on your receiver/amplifier, before unplugging or plugging in, and turning off the receiver/amplifier is preferred. I used to run live sound for a band, and I was taught to never plug or unplug anything with the amplifiers on.
Jack
"People generally quarrel because they cannot argue." - G. K. Chesterton
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Re: EP600 / Please Explain Grounding - Again
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Joined: Feb 2005
Posts: 5,211
axiomite
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axiomite
Joined: Feb 2005
Posts: 5,211 |
I used to run live sound for a band, and I was taught to never plug or unplug anything with the amplifiers on. They had amplifiers back then Jack?
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Re: EP600 / Please Explain Grounding - Again
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Joined: Jul 2004
Posts: 4,444 Likes: 16
connoisseur
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OP
connoisseur
Joined: Jul 2004
Posts: 4,444 Likes: 16 |
Jack,
What makes this thumping even weirder, is the reciever was powered off. Everything was powered off, but the sub.
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Re: EP600 / Please Explain Grounding - Again
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Joined: Mar 2005
Posts: 7,463 Likes: 1
axiomite
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axiomite
Joined: Mar 2005
Posts: 7,463 Likes: 1 |
I think the sub amp has a reserve of power--maybe for those dynamic peaks. The light on my sub amp takes a while to dim after I turn the power off.
*********** "Nothin' up my sleeve. . ." --Bullwinkle J. Moose
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Re: EP600 / Please Explain Grounding - Again
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Joined: Dec 2003
Posts: 6,331
axiomite
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axiomite
Joined: Dec 2003
Posts: 6,331 |
Jack,
What makes this thumping even weirder, is the receiver was powered off. Everything was powered off, but the sub. Well, with the sub's amp on, I can understand plugging in, or unplugging, a component upstream in the connection chain having an affect on the subwoofer driver. But, it is a little weird that unplugging a video processor, which (I'm assuming) isn't even directly connected to the subwoofer, would have that affect. I'm at a loss.
Jack
"People generally quarrel because they cannot argue." - G. K. Chesterton
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Re: EP600 / Please Explain Grounding - Again
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Joined: Jan 2007
Posts: 10,494 Likes: 116
shareholder in the making
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shareholder in the making
Joined: Jan 2007
Posts: 10,494 Likes: 116 |
Unplug the sub cable at the sub. If it still thumps, the spirits are coming in from the AC plug that your sub is plugged into. When you plug/unplug it, it's creating a low frequency disturbance on the AC line that is getting through the sub's surge protection circuitry (which is designed for high frequency disturbances only - like lightning). If it doesn't thump, then your cable is picking up a signal when you plug/unplug your VP50pro. The solution is to stop messing with your VP50pro's power plug .
House of the Rising Sone Out in the mid or far field Dedicated mid-woofers are over-rated
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Re: EP600 / Please Explain Grounding - Again
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Joined: Jul 2004
Posts: 4,444 Likes: 16
connoisseur
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OP
connoisseur
Joined: Jul 2004
Posts: 4,444 Likes: 16 |
LOL!
Ya, I figured as much... Do not mess with the plug.
I think the root is, I just want to figure out why this is happening. It's driving me nuts, which usually inspires me to figure it out.
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Re: EP600 / Please Explain Grounding - Again
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Joined: Jan 2007
Posts: 10,494 Likes: 116
shareholder in the making
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shareholder in the making
Joined: Jan 2007
Posts: 10,494 Likes: 116 |
Let us know what you find out from my suggestions above.
House of the Rising Sone Out in the mid or far field Dedicated mid-woofers are over-rated
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