lightbulb Super Sub XXL HUM

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Outlaw#9 Posted 3 years 10 months ago
Last edit: 3 years 10 months ago by Moderator. info_outline
#14024
I recently Purchased the super sub XXL and it is musically awesome to say the least. I have one issue I am not sure how to correct/fix. When the Sub is on and no volume or low volume you can hear a slight hum out of it. I also switched input cables with no change. I also had the input disconnected and the hum is still there. Is there a fix to this problem I am experiencing?
My System
Yamaha RX-A 1000
2- Panamax Power Cond.
Rotel RB-1090
Rotel RMB-1095
Polk SDA 1.2TL
Paradigm Studio CC-470v3
2 Supersub XXL’s
Paradigm Studio 60 Rears.
Monster THX cables
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Moderator Posted 3 years 10 months ago
#14028
Can you hear the hum from your listening seat? If so, you'll need to troubleshoot possible local causes first. With the audio input cable removed, after the sub turns on, make sure there are no sources of interference nearby (remove or unplug any WiFi routers, cellular boosters, microwave ovens, wireless phone bases) to see if the hum stops. If not, before contacting the dealer, move the sub to a different room and power circuit and see if it still hums. If not, something is causing it in the other room. If it still hums, contact your dealer with the serial number. There is no "fix" if there is a hum caused by the sub's electronics, your dealer would need to verify the issue and replace the electronics.
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Outlaw#9 Posted 3 years 10 months ago
Last edit: 3 years 10 months ago by Outlaw#9. info_outline
#14029
Yes I can, its not a consistent frequency, its like a cycling frequency. I disconnected everything but the sub power from my outlet and the hum is still there. How would you get it to power up with no input signal in another room?

If it matters I have an Anthem amp and its dead silent out of the same outlet that the supersub XXL is connected to.
My System
Yamaha RX-A 1000
2- Panamax Power Cond.
Rotel RB-1090
Rotel RMB-1095
Polk SDA 1.2TL
Paradigm Studio CC-470v3
2 Supersub XXL’s
Paradigm Studio 60 Rears.
Monster THX cables
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GDHAL Posted 3 years 10 months ago
Last edit: 3 years 10 months ago by Moderator. info_outline
#14032
In addition to what the moderator has stated, there is another one piece of equipment - when combined with less than perfect grounding - that is notorious for low frequency hum. Namely, cable television box equipment. Fortunately there is a remedy, Disconnect power to all cable equipment (in all rooms) and then listen to the Super Sub XXL. If cable equipment is found to be the cause, obtain from your cable company a drop isolator. It makes a WORLD of difference. So much so you should have one even if your cable equipment has nothing to do with the hum. B)

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Golden Ear Triton Reference (pair), Musical Fidelity M6si, Schiit Yggdrasil-B, Oppo UDP-205, Emotiva ERC-3, LG OLED65C9PUA, Salamander Synergy Triple Unit SL20, Audeze LCD-X
halr.x10.mx/TritonReference.htm ; halr.x10.mx/other.html ; halr.x10.mx/AV.jpg
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Moderator Posted 3 years 10 months ago
#14037

Outlaw#9 wrote: How would you get it to power up with no input signal in another room?

If it matters I have an Anthem amp and its dead silent out of the same outlet that the supersub XXL is connected to.


Plug in the RCA cable and tap the pin.

No, it doesn't matter.
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Outlaw#9 Posted 3 years 10 months ago
#14051
I have Dish, but my internet is on cable, Do you know where this drop isolator can be purchased?
My System
Yamaha RX-A 1000
2- Panamax Power Cond.
Rotel RB-1090
Rotel RMB-1095
Polk SDA 1.2TL
Paradigm Studio CC-470v3
2 Supersub XXL’s
Paradigm Studio 60 Rears.
Monster THX cables

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