My system is in my sig, but I use AudioQuest Type 2 on the fronts and center. A cheaper wire is used on the surrounds and I use Outlaw interconnects.

Anywho, I have not be able to isolate the hum. True, you have to put your ear up to the speaker to hear it, but the ultimate question is is this hum really hurting the listening experience? I mean, I have no way to test if, but does the hum go up in volume with the music? When the 990 is set to zero volume, the hum is just as loud as it is when the volume is -65!

I would like to explore the idea of XLR's except that I need two splitters since I bi-amp the LSi15's. I have not been able to find anything on the internet that allows me to do this.

thoughs?

I know there are dozens of "hums" thread but and Gonk suggested a $49 solution that may or may not work. We have so many electronics in our home that it is difficult to find the culprit.

If you want to determine whether the Jensen will help or not, try unplugging the cable TV coax from the cable box and see if the hum disappears. If it does, the Jensen's the best bet. If the hum is unrelated to the cable TV service, the Jensen will probably not help at all.

If the hum is the same at any volume position when the source device is not playing anything, then it's unrelated to the volume control. That definitely makes checking for cabling issues a worthwhile exercise - make sure connections are tight and that power cables aren't crowded alongside speaker or interconnect cables.

How close to the tweeter do you have to be to hear the hum when nothing is playing? If we're talking a foot or more, I'd certainly keep searching, but if we're talking about an inch or two I might not get too caught up in the "hum hunt."

I to had an annoying hum. The cable box, having used Gonk's method of isolation, was not the culprit. I ended up going the XLR route using XLR splitters. This removed all the noise except for the noise generated by the wireless dog collar! Gotta keep Chessie around so I put up with it. Jim

you have to put your ear right up to it. In the scenario I pointed out, do you think XLR's would defeat such hums as mine (which I am almost 99.9% sure is related to the cable box)?

where did you get those XLR splitters?

gonk, let me be blunt, does the tiny little hum take away from the response and clarity of my vifa tweeter and Polk mid range drivers?

If you have to get your ear right up to it, then I wouldn't think we're talking about much. Of course, if it is related to the cable box (which can be proven by simply pulling the plug on the cable box), the Jensen should cure it and make it a moot point.

They are just a pair of female XLRs soldered to a male XLR in parallel.

Here's a link
http://www.audiogear.com/Audio-Adapters-Xlr.html
You can also do a search for a XLR Y
Jim

Hey somebody - what kind of hum is it that comes out of tweeters? I thought hum was always 60Hz and its overtones.

the hum coming out of the drivers is playing a 60Hz hum, but the tweeter is going to play all of the overtones based on the 60Hz.