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Help needed with subwoofer problem - Printable Version

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Help needed with subwoofer problem - DelaneyB - 23-Dec-2016

My Atohm V38s subwoofer has arrived, but I’m having a bit of a problem.
I wonder if anyone can help.
Its making a rumbling/cracking sound like distant thunder. Huh
It does it whether is connected to the amplifier/Coax or not. Its also independent of the amplifier volume and quite loud. So assuming its not an amp/cable issue.
I had a loud humming noise initially, but solved that by plugging the sub to the same power strip as the rest of the system (to make sure earth is the same).

The rest of my system is a Devialet 250, Atohm GT1 SE (sources Mac Mini and Rega P3)
Everything else is working fine.
Not sure what this can be.
Thanks
Brendan


RE: Help needed with subwoofer problem - yabaVR - 23-Dec-2016

(23-Dec-2016, 10:38)DelaneyB Wrote: My Atohm V38s subwoofer has arrived, but I’m having a bit of a problem.
I wonder if anyone can help.
Its making a rumbling/cracking sound like distant thunder. Huh
It does it whether is connected to the amplifier/Coax or not. Its also independent of the amplifier volume and quite loud. So assuming its not an amp/cable issue.
I had a loud humming noise initially, but solved that by plugging the sub to the same power strip as the rest of the system (to make sure earth is the same).

The rest of my system is a Devialet 250, Atohm GT1 SE (sources Mac Mini and Rega P3)
Everything else is working fine.
Not sure what this can be.
Thanks
Brendan

Hi Brendan,
if nothing is connected to the sub, just the PC to the power strip, it is most likely that something is broken/loose inside the sub due to transport/fabrication.
Sorry but I think you have to send it back. Make a quick phone call to the dealer before to describe the issue though.

gui


RE: Help needed with subwoofer problem - DelaneyB - 23-Dec-2016

(23-Dec-2016, 11:08)yabaVR Wrote:
(23-Dec-2016, 10:38)DelaneyB Wrote: My Atohm V38s subwoofer has arrived, but I’m having a bit of a problem.
I wonder if anyone can help.
Its making a rumbling/cracking sound like distant thunder. Huh
It does it whether is connected to the amplifier/Coax or not. Its also independent of the amplifier volume and quite loud. So assuming its not an amp/cable issue.
I had a loud humming noise initially, but solved that by plugging the sub to the same power strip as the rest of the system (to make sure earth is the same).

The rest of my system is a Devialet 250, Atohm GT1 SE (sources Mac Mini and Rega P3)
Everything else is working fine.
Not sure what this can be.
Thanks
Brendan

Hi Brendan,
if nothing is connected to the sub, just the PC to the power strip, it is most likely that something is broken/loose inside the sub due to transport/fabrication.
Sorry but I think you have to send it back. Make a quick phone call to the dealer before to describe the issue though.

gui

Thanks,
Oh well, that will mean shipping it back to Italy from the UK in the New Year....
Sad


RE: Help needed with subwoofer problem - DelaneyB - 23-Dec-2016

Very strange though.
I changed the mains cable to the original continental one (with an adaptor) and it went away for about an hour.
No its back, but a lot quieter. Just a varying 'rumbling' sound like a distant storm. Very audible when no music is playing.
Could it be something to do with the mains?


RE: Help needed with subwoofer problem - Axel - 23-Dec-2016

(23-Dec-2016, 18:25)DelaneyB Wrote: Very strange though.
I changed the mains cable to the original continental one (with an adaptor) and it went away for about an hour.
No its back, but a lot quieter. Just a varying 'rumbling' sound like a distant storm. Very audible when no music is playing.
Could it be something to do with the mains?

If you suspect a bad mains supply, listen to it in the early hours of the morning, when there is less draw on the mains and see what you hear. I mean hear what you hear. I mean....well you know what I mean!


Help needed with subwoofer problem - Soniclife - 23-Dec-2016

Some sort of Christmas lights mains pollution?


RE: Help needed with subwoofer problem - yabaVR - 23-Dec-2016

(23-Dec-2016, 18:25)DelaneyB Wrote: Very strange though.
I changed the mains cable to the original continental one (with an adaptor) and it went away for about an hour.
No its back, but a lot quieter. Just a varying 'rumbling' sound like a distant storm. Very audible when no music is playing.
Could it be something to do with the mains?

May be a loose mains connetion inside the sub at the IEC or on the mainboard. If you know how to do it you should open the unpowered back panel and have a look on the connections inside. It could be a very simple issue. Post a photo if you're not sure.

gui


RE: Help needed with subwoofer problem - DelaneyB - 24-Dec-2016

Well the upstairs neighbours have vetoed it anyway. The extra bass goes straight into their flat even though its NOT loud.
Depressing....


RE: Help needed with subwoofer problem - DelaneyB - 11-Jan-2017

(24-Dec-2016, 00:51)DelaneyB Wrote: Well the upstairs neighbours have vetoed it anyway. The extra bass goes straight into their flat even though its NOT loud.
Depressing....

Spoke to a very nice Mr Cont at Atohm today. suggested cleaning all the microswitches with switch cleaner. Sorted the problem.
Now waiting for my sorbthane feet.....


RE: Help needed with subwoofer problem - Celts88 - 11-Jan-2017

(11-Jan-2017, 00:06)DelaneyB Wrote: cleaning all the microswitches with switch cleaner. Sorted the problem.
Now waiting for my sorbthane feet.....

What are the 'microswitches'

Sorry to jump on your thread, but the problem I have is a 'heartbeat' sound I get from my Sub (Paradigm Sub1), any idea what would cause this?