derrickdj1 Posted April 22, 2014 Share Posted April 22, 2014 I have developed a low level hum in the system. If will fluctuates and times but is not a 60 Hz buzz. The only things that have changed in the HT was the replacement of the cable line in the wall and a separate cabel for high speed internet in the wall. I also added an amp for 2 of my subs. At louder volumes the hum can't be heard. Any suggestions or solutions are greatly appreciated. Thanks! Quote Link to comment Share on other sites More sharing options...
Heritage_Head Posted April 22, 2014 Share Posted April 22, 2014 Have you tried different outlets? Or a cheater plug to go from 3 prong to 2 prong? Quote Link to comment Share on other sites More sharing options...
eth2 Posted April 22, 2014 Share Posted April 22, 2014 I have developed a low level hum in the system. If will fluctuates and times but is not a 60 Hz buzz. The only things that have changed in the HT was the replacement of the cable line in the wall and a separate cabel for high speed internet in the wall. I also added an amp for 2 of my subs. At louder volumes the hum can't be heard. Any suggestions or solutions are greatly appreciated. Thanks! Oh god. I have infected the Forum! 2 Quote Link to comment Share on other sites More sharing options...
derrickdj1 Posted April 22, 2014 Author Share Posted April 22, 2014 (edited) I only have two outlet that I use for the HT. Both outlets have a power console that everything is connected to. I have tried plugging up things differently and no luck. The tow outlets are on a different circuit, both 15 amps. I don't think this one is on you eth2, lol. Edited April 22, 2014 by derrickdj1 Quote Link to comment Share on other sites More sharing options...
ryanm84 Posted April 22, 2014 Share Posted April 22, 2014 I have developed a low level hum in the system. If will fluctuates and times but is not a 60 Hz buzz. The only things that have changed in the HT was the replacement of the cable line in the wall and a separate cabel for high speed internet in the wall. I also added an amp for 2 of my subs. At louder volumes the hum can't be heard. Any suggestions or solutions are greatly appreciated. Thanks!Oh god. I have infected the Forum! It's catchy!! Quote Link to comment Share on other sites More sharing options...
eth2 Posted April 22, 2014 Share Posted April 22, 2014 Have you reviewed the mono block ground loop thread? People gave me all types of things to try such as: Line conditioners Cheater plugs Using an AM radio tuned to 880 to look for problem areas Getting rid of dimmer switches Using a common surge protector Looking for florescent lights The new types of incandescent bulbs Making sure that the amp, preamp and other components are plugged into the same outlet Adding a ground loop device to the line in for CATV. It would be worth it for you to review that thread as many very knowledgeable people offered their thoughts and help Quote Link to comment Share on other sites More sharing options...
derrickdj1 Posted April 23, 2014 Author Share Posted April 23, 2014 My power consoles are also line conditioners. I don't want to use cheater plugs due to the fire hazard, although small. Quote Link to comment Share on other sites More sharing options...
Heritage_Head Posted April 23, 2014 Share Posted April 23, 2014 When ever i turn on the xbox 360 i get a low static (and thats downstairs and upstairs). When i turn on ps3 or 4 i get no noise at all. Really strange stuff good luck . Hate ground loop problems Quote Link to comment Share on other sites More sharing options...
Heritage_Head Posted April 23, 2014 Share Posted April 23, 2014 My power consoles are also line conditioners. I don't want to use cheater plugs due to the fire hazard, although small. You might only have to use it on one thing if you can track that down Quote Link to comment Share on other sites More sharing options...
Max2 Posted April 23, 2014 Share Posted April 23, 2014 I have developed a low level hum in the system. If will fluctuates and times but is not a 60 Hz buzz. The only things that have changed in the HT was the replacement of the cable line in the wall and a separate cabel for high speed internet in the wall. I also added an amp for 2 of my subs. At louder volumes the hum can't be heard. Any suggestions or solutions are greatly appreciated. Thanks! Have you tried unplugging the sub amp when the hum is noticable? I would just start at the top and start eliminating things one at a time until you find it. Hopefully its not any of your new in-wall wiring. Quote Link to comment Share on other sites More sharing options...
CECAA850 Posted April 23, 2014 Share Posted April 23, 2014 I don't want to use cheater plugs due to the fire hazard, although small Use them for diagnosis, then take them off if desired. Quote Link to comment Share on other sites More sharing options...
beeker Posted April 23, 2014 Share Posted April 23, 2014 shake the wires and see if the hum goes in and out.. i have found this common including pa systems with subwoofer installs and you did indeed re install your subwoofer system.. shake the wires and see if the hum changes even for a second..cable box wires and modem, internet wires cause some low frequency hums in my experience...shaking the wires will tell you if its a crossed wire or not...as well as other possible issues.. Quote Link to comment Share on other sites More sharing options...
Schu Posted April 23, 2014 Share Posted April 23, 2014 (edited) no change in interconnects?sadly missing from eh2's list in his post even though it can be the most common occurrence of this type noise. Edited April 23, 2014 by Schu Quote Link to comment Share on other sites More sharing options...
derrickdj1 Posted April 23, 2014 Author Share Posted April 23, 2014 I have narrowed it down to one of the sub amp. Tomorrow I will that amp on another power source. 1 Quote Link to comment Share on other sites More sharing options...
beeker Posted April 23, 2014 Share Posted April 23, 2014 awesome! please update 1 Quote Link to comment Share on other sites More sharing options...
MichaelandKlipsch Posted April 23, 2014 Share Posted April 23, 2014 I noticed a very small hum with my 2 subwoofer amps during my initial install last year. I use the Sub-3 Audioquest with AQ y connectors into each amp and they come with a ground tail which when I attached to one of the amps completely makes them silent. I would think something small like this maybe running a small wire to ground them could help? I hope you get it fixed today. 1 Quote Link to comment Share on other sites More sharing options...
derrickdj1 Posted April 23, 2014 Author Share Posted April 23, 2014 I noticed a very small hum with my 2 subwoofer amps during my initial install last year. I use the Sub-3 Audioquest with AQ y connectors into each amp and they come with a ground tail which when I attached to one of the amps completely makes them silent. I would think something small like this maybe running a small wire to ground them could help? I hope you get it fixed today. I have the sub cable split to 3 amps. This is a good ideal to look into. I tried the cheater plug and the hum may be a little worse using it. I will pull everything out later to day and change sub cables and splitters on the sub cable. Quote Link to comment Share on other sites More sharing options...
MichaelandKlipsch Posted April 23, 2014 Share Posted April 23, 2014 (edited) I know we have different subwoofer setups of course the way mine is setup is on the back of my Anthem Pre amp there are 2 sub out RCA and XLR connections. I use the RCA analog outs and both of my Sub-3 cables were factor terminated with a Y connector made from audioquest and then each has the 72dbs kit and a ground tail on each end. My KA-1000 amps have a Left and Right RCA in of course which I connect one sub out of the pre to each sub in on the amp and the ground tail on each amp. Then my amps have two sub outs via Speakon cables to the passive KW-120s so I know our sub layouts are different as I don’t use y splitters to add subs but adding the ground may help you mate. Edited April 23, 2014 by MichaelandKlipsch Quote Link to comment Share on other sites More sharing options...
derrickdj1 Posted April 23, 2014 Author Share Posted April 23, 2014 (edited) Problem solved, I think it was partially related to the gain structure of the B amp. I was using a stereo TSR connector since on the amp since nobody had a mono connector when I need one. I also change the sub cable and the speaker wire but, the hum was still there. I was also using TSR connections to the ch A and ch B on the back of the I Nuke 3000's, similar to using a Y connector on the back of the sub. For Bridge mode on those amp, ch A is the correct ch to use. I know that but, I guess with the introduction of the I Nuke 6000 DSP something was altered with the synergy of the amps or possibly related to the new internet and TV coaxial wire ran in the same vacinity. I don't think it was a ground loop problem. The exact cause, I am not a 100% certain but, the problem is gone! Thanks for all the suggestions, this got me thinking of how everything was wired. It is great to have learned so much being on this forum. Edited April 23, 2014 by derrickdj1 Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.