Let's build a subwoofer interconnect


I need a high quality 3 meter single subwoofer interconnect for a nice music/HT system. My speakers cross over to the sub at 80 Hz. I haven't shopped interconnects for several years. There sure are a lot of choices. I've got my preferred RCAs narrowed down to Bullet copper or silver and WBT NextGen copper or silver. I need help narrowing down further to the best assembled sheilded wire/RCA combination. Some suppliers I'm looking at include Bolder and VH Audio. I've asked VH Audio for a price on a 3 m Pulsar with the WBT NextGen silver RCA. If you were having a custom subwoofer interconnect built what choices would you make? Let's say we keep the budget for this litte project under $300. Member input is much appreciated.
rogereckert
The Belden 89259 is also an affordable option. Same idea as above though, you don't need to go nuts to have an uncompromising solution.
I'm learning a lot from our members in the course of this discussion. I assumed great connectors and great wire were required to attain great subwoofer performance. It seems that premise would result in over kill. I'm exploring the options shared thus far. I haven't heard back from Chris at VH Audio. Perhaps he's vacationing. I'll try again. In the meantime feel free to share if you haven't yet. Thanks.
Per Rives suggestion, I checked out the BetterCables website. However, teir new subwoofer cable is stranded, silver plated copper w/ foamed insulation. I'd go for the VenHaus Pulsar, since it's solid core copper, with solid (instead of foamed) insulation. You can buy the cable for $4.99/ft and buy your own rca plugs.
If you accept the idea that any cable can do the job, why spend $25? You can get shielded subwoofer cables from http://accessories4less.com for 7 bucks. Why pay someone $20 to put techflex over Canare/Belden?
Funny thing, I just went through this same excercise. I opted for Blue jeans cables and I used the subwoofer interconnect they recommend. After doing the math, I came to the same conclusion they did.

I do agree with the comment above about the subwoofer cable only passing frequencies below your subwoofer crossover point. Since no one is, or should be, using a brick wall filter you can expect another couple or three octaves of information above the crossover point to pass along with the lower frequencies. Once the signal is more than 20 to 25 dB down below the crossover point you can ignore the remainder.

Keep in mind the shielding has to do more than just shield 60Hz hum. It also has to keep out EMI and other non audio band nasties. A good low impedance shield will do a very good job of this, even if it isn't a foil shield. Hum is an irrating but leaves the music untouched. RFI will absolutely destroy music in all of the octaves. The real rub comes in from the fact if you have hum leaking in through your interconnects you also have RFI leaking in as well.

A lot of folks believe that a distortions in cables are due to unexplained mysterious things happening within the conduction of the wire or loss in the dielectric. Although this is true to some extent, all of these losses are very small in comparison to the biggies of RFI, inductance, and capacitance.

In the past few months, I am begining to understand that most of what audiophiles hear as "improvements" from cables are really improvements in RFI suspectability.

Comments invited,