First of all, these were shipped quickly by Amazon, they were reasonably priced and were in good shape when recieved. I had originally hooked my sub woofer up using half of a pair of RCA cables I had laying around. That worked but I didn't like the second cable just hanging there so I purchased this single cable. This is much more heavily shielded than what I was using so I have to believe the sound is better but at my age who can really tell. The only problem was that when I first hooked up the cable it didn't work. I played around with the speaker first and still it didn't work. I disconnected it from the amplifier and then reconnected it. It was very tight on the amplifier end and I put a little more pressure on it the second time. After that it worked but I don't think it should have been that difficult. Nevertheless, now that it's installed I won't be removing it anytime soon so I'm satisfied that I'm good to go for the foreseable future.
Unfortunately, since my review, I had to return this product. Apparently it wasn't just a case of fitting correctly. Everytime I turned the amplifier around to make a change in the back this sub-woofer would stop working. I determined that the connector was bad, not just that it was a tight fit. I will have to order another one.