I recently moved my sub to the front of my room, and ran the cable for the sub, and an extension cord through a pipe (designed to look kinda like a chair rail-adds a nice retro look) to my sub in the front of the room.  I really do not want to have to run either cord through the wall as that would take a lot of work how my basement is set up. 

I have read already that it could receive interference from the power cord being they are that close together and running side by side, but i have not noticed any problems.  Should I be concerned about damage to the sub?  Do I need to buckle down and put in the effort to run either wiring, or my sub cable through the wall?

     Any advice appreciated,

     Thanks,

      Joseph S.
 

Joseph,

If you are using a 3-wire extension cord, the wires should be twisted which will reduce the chance of noise induction into the Sub-cable providing you are using a good quality shielded Sub-cable.

The relative low current used by the Sub, probably 3 amps or less should also minimize the effect of electrical magnetic field induction as opposed to some household wiring that may draw 15 amps.

My LFE cable runs parallel for 7 ft with the outlet strip that powers my A/V rack which can draw as much as 11 amps. The higher the current the stronger is the magnetic field.

I have no problems.

If you are using metallic conduit, not plastic then you could just isolate the cord/cable with a separate run if you experience problems.

I went ahead and added a seperate run for the power, just for peace of mind. 

I'll be adding a picture in the gallery forum once my 634 arrives and I get it setup.

Then just one more month till I can replace two of my kenwood surrounds with 632's.  After that I will have 5.1 with all Aperion speakers (with two rear surrounds that aren't, but that will have to wait till next year.)