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Speaker Cables and Carpet

I have a situation where I’m covering up my speaker cables with carpet to give a neater, cleaner look. It goes (from bottom to top): carpet, rubber matting, speaker cables, rubber matting, carpet. The rubber matting is there because I wanted to avoid interactions between the wire and carpet and figured that would help, but maybe not?

The issue I seem to be having is a decrease in dynamics. The drum slaps don’t seem to have the same weight and punch, although the system overall sounds pretty good with great instrument separation and soundstage (something I didn’t expect). The treble seems a bit tamed for some reason, but still pretty good sounding.

I’m wondering if the change in sound I’m hearing is from electrical interactions with the carpet and/or rubber. Perhaps one or both are robbing some energy from the signal in the speaker cable. Does that seem to check out?

If so, I’m wondering what my solutions are. One thought is adding more runs of speaker wire between the amp and the speakers. Is this called biwiring or shotgunning? I’m thinking that if the carpet is robbing energy, then I can make up for it by adding more copper and reducing resistance. 

But maybe I just need to get the cables away from the carpet. Are there any good rules of thumb for how far cables need to be kept away from carpet?
128x128mkgus
millercarbon's avatar
millercarbon
12,531 posts
 
You are on the right track, they need to be up off the carpet. Or floor, whatever that happens to be. Doesn't seem to matter. Several inches will do, and you can use just about anything from paper or plastic cups to blocks of wood. Really good electrical insulators seem to work better which is probably why....

Cable Elevators are the best I have tried. https://www.reddragonaudio.com/products/cable-elevators?variant=249017132 After buying mine I noticed they are really just the ceramic insulators used on top of telephone poles all across the country! They slap a sticker on the part, and a zero to the price, and box them up n sets of 8 which it usually takes 3 per speaker leaving 2 to place under a power cord or whatever else might be laying on the floor.

These things work so good I did a demo for Chris Brady one time, kept the music playing the whole time as I removed them from one side then the other then put them back again. He said he could hear the sound stage collapse as I removed them and come back again as they went back in.
rlb61
792 posts
 
Use small to medium size white ceramic ramekins ...$1.99 each at BB&B. Same concept and effect as the cable elevators, but at a fraction of the cost.
dekay's avatar
dekay
5,685 posts
 
I support my cables with Faberge Eggs.

They run in the $12K - $15K range.

DeKay
bsmg
296 posts
 
mkgus I would guess that your carpet and rubber layers create a static charge in the speaker cables that are down there. You need to get them out of there and run them in the wall if you’re overly concerned with cosmetics or else just exposed but supported above the floor with any non conductive material. Your idea of running more speaker wire is not good; and if you did run more wire, you would have more electrical resistance, not less. Magic chickens are a last resort, and only result in defeat.
millercarbon's avatar
millercarbon
12,531 posts
 
While anything that raises the cables certainly will improve things, the very best solution is to use something specifically designed to prevent electric charges moving along the surface getting from the floor to your cables. There's a whole industry devoted to this exact subject so its no surprise the best performance by far is to use one of these insulators. Turns out there's a whole cottage industry of collectors so you can if you want hunt around and find some that you like. Or you could hunt around and find the manufacturer, which is what Cable Elevators seems to have done. Either way this is by far the best way to go. https://www.ebay.com/itm/2-Vintage-Ceramic-Porcelain-Insulators-Brown-White/183480810613?hash=item2a...

The ones here are exactly the same as mine. Cable Elevators basically slaps a sticker on the side and a rubber foot on the base. Even at their inflated price they are well worth the money.
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