subwoofer hum

monopolyman
monopolyman Posts: 1
edited September 2013 in Troubleshooting
I just purchased and installed a surroundbar 4000, and am getting a hum through the subwoofer. Any ideas on how to get rid of it? I have tried all four channels on the bar and subwoofer, and have even moved it across the room to a different outlet, and I still get the hum. Help!
Post edited by monopolyman on
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Comments

  • Eocuph
    Eocuph Posts: 75
    edited September 2013
    I'm getting the same thing from my polk rt3000p's. Something wrong with the amps.
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  • WLDock
    WLDock Posts: 3,073
    edited September 2013
    Ground loop or problems with the amp. In the case of the 300's the PS caps and/or the voltage regulator are a great start and a common issue given the age of these amps.
    2.2 Office Setup | LG 29UB55 21:9 UltraWide | HP Probook 630 G8 | Dell Latitude | Cabasse Stream Amp 100 | Boston Acoustics VS 240 | AUDIORAX Desk Stands | Mirage Omni S8 sub1 | Mirage Omni S8 Sub2
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  • specd_out
    specd_out Posts: 505
    edited September 2013
    just for ****s and giggles. wiggle the coax going to your cable box. See if the noise changes. I chased the issue for days. The cable was the issue. Went out side found the grounding block. Cleaned the contacts and tightened them down nice and tight. That got rid of most of my hum. a Ground loop isolator took care of the rest
    HT Rig Samsung 64F8500 |Pioneer Elite BDP-52FD|Pioneer Elite VSX-32| Two Carver TFM-15cb Bridged for mains|Polk Audio RTiA5 Cherry|Polk Audio CsiA6 Cherry|Polk Audio T-15 Heights|Polk Audio FXia6 Surround|DIY 8cuft Dayton Ultimax 15" powered with a Crown XLS1000
    2Channel Rig Polk Audio LSi9 Cherry| Carver C-1BillD Mod|Carver M1.0t MkII Opt2|Pro-ject RM 1.3|SpeedBox S|AQ King Cobras|AQ Rocket88|
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