devilman
Anyone using a power conditioner on a Submersive?
I was thinking of trying something from isotek, a Titan and perhaps a syncro power cord.
Trying to lower the noise floor on the 6000watt amps.
Thanks
Dm
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Stereodude
I don't think it will change the noise floor, but I could be wrong.  What "noise" are you hearing from a subwoofer anyhow?
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devilman
With the old 1000w amps silent,changed to the new amps added a couple of slaves now have a hum.
A isotek nova has made a huge difference to my kuro PDP, as it should for the outlay. The kuro used to buzz, now not a whisper.
Dm
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JohnnyV
I'd start with the basics first. If it's a hum like ground loop hum do some digging around there are some fundamentals that need to be fixed that don't require expensive equipment.
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calentz
Does it "Hum" without the slaves plugged in? Is the power supplied from the same location? Does it "Hum" with the ground (Round) pin isolated?
Carl
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devilman
Thanks for the input so far.
The humming is present if the slave is unconnected, makes no difference. Also unplugging the xlr cable makes no difference.
Does this rule out the ground loop issues?
The volume of hum also changes, seems really quite today. Other days i can hear it before i enter the room.
Dm
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calentz
Does it "Hum" with the ground (Round) pin isolated? (On the power cable) Is the power supplied from the same location?
Carl
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devilman
Hi Carl,
I will remove the wall socket and disconnect the earth.It may be after this holiday nonsense is out of the way.
I am powering the system off two sockets, three if you include the active rears.
Have tried many socket combinations to no avail.
Thanks
Dm
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JohnnyV
Grab cheater plug from the hardware store.  They are usually less than a buck.  I wouldn't use it long term but it's a good troubleshooting tool.

Do you have any dimmers in the room or on the same circuits?  Does the hum change with dimmer level?

Do you have a cableTV provider coax line coming into the house that isn't properly grounded(almost none are).


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calentz
devilman wrote:
Hi Carl, I will remove the wall socket and disconnect the earth.It may be after this holiday nonsense is out of the way. I am powering the system off two sockets, three if you include the active rears. Have tried many socket combinations to no avail. Thanks Dm

So.. You are saying that you are powering the sub's amp from the same circuit that was problem free with the former amp & the hum exists without an input?
Carl
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devilman
Yes, this exactly.
No dimmer switches. No tv.
I did speak to Mark, he said the noise floor would be a little higher.
Dm
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airboyd
Probably not your issue, but with the "newest" amps on an F2 and Slave, I found that I had turned them on with the selector switch on pointing to RCA inputs instead of XLR. Even when I unplugged and plugged the XLR back in nothing changed and when flipped the switch, nothing changed until I powered it down and unplugged everything and started from scratch. Freaked me out. Anyway, a story for those that make my mistake...they are dead silent now.
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