Subwoofer interconnect

Discussion in 'Archived Threads 2001-2004' started by Frank Chang, Dec 9, 2001.

  1. Frank Chang

    Frank Chang Agent

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    I'm a relative newbie to this forum but have read many past posts.

    Upgrading a midlevel HT with Denon 3802. Decided to add a Sony SAWM40 sub for LFE to compensate for older small Rear & side surround speakers (have purchased polyfil & feet not yet installed). Aesthetics will dictate about an 18 foot distance from 3802 to sub. I have 6' & 12' Radio Shack Gold interconnects I could easily link together and also a DIY RCA terminated Belden 9116 75 ohm coax. How important is the interconnect for a budget sub doing only LFE?

    I'm wondering which wire will sound better or should I go out and buy something else?
     
  2. Evan S

    Evan S Cinematographer

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    You are opening a can of worms with this one, but IMO you will be fine linking the two cables. Because a sub doesn't produce a full frequency range, you might get a boomy-ness type sound with a patched cable, but the degree of clarity you may gain from a new cable may not justify the cost here. Again, this is my own opinion. I am not a "cables make no difference" guy either...I agree they do, but for this application I think you will be fine.

    At least try it first, then if you don't like the sound, think it's boomy...buy a new cord and compare.

    -Ev
     
  3. Bob McElfresh

    Bob McElfresh Producer

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    I might disagree and recommend a single, un-broken cable. The one made from Belden coax should be fine.

    Here are my thoughts:

    Coax tends to be defined by it's upper frequency limits. For subwoofer frequencies 15-120 hz, almost any coax will work fine.

    But when SVS subs came out, they also recommended inexpensive/generic cables. But an early purchaser got a unit and found it to be un-impressive compared to the less-expensive unit he was replacing.

    After a few days, another cable, still the same cheap grade, was tried and the results were much better.

    The new cable had tighter RCA connectors. This alone seemed to have a dramatic change in the sound. Not the price/quality of the coax.

    So running 2 cables with a barrel-connector gives you more places to have a loose-connection. A single, un-broken cable is likely to give you better sound.

    So check your plugs.
     
  4. Mark Rich

    Mark Rich Second Unit

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    I agree avoid the joined cable method.

    I wouldnt recomend using the Belden 9116 either. It uses a copper covered steel conductor with only a 60% aluminum braid shield. While it will work it will not allow your sub to perform to its full potential. I think a boomy, sloppy bass will probably result.

    If you have the DIY ability then consider buying a more suitable cable. A Canare GS-6 cable will work and its affordable ( providing you can solder).It will be improved upon by some other Canare cables and bettered by Belden 89259.
     
  5. Frank Chang

    Frank Chang Agent

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    I also have other used higer end audio cables in my collection. I found a set of 30' directional looks like "FMS Blue Five" audio cable. Does anyone know what this is? It was used as an interconnect over 10 years ago prior to a cable upgrade for an audio system. I'd hate to break up the pair and cut one but it's just been in my shop dormant over 10 years. I guess I could just use 1 but it's twice as long as I really need.

    Is coax really OK for Subwoofer interconnect? There used to be a lot of hype in audio cables years ago when I was more into audio. I have some significant investments in other subwoofer interconnects to bi-amped speakers in a different audio system.

    Are the Belden 89259 and Canare GS-6 solid conductor coax or braided center conductors? Where can I find more information and purchase one of these raw wires for DIY cables.
     
  6. Myram

    Myram Second Unit

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    Or you could buy a dedicated subwoofer cable from Monster or any of the other companies.
    I have the Monster M351 sub cable and it cost me $40 for a 2.5m.
    Check out www.ebay.com and do a search for "subwoofer cable" and you will come up with many good options at some very good prices.
    Good Luck
     
  7. Mark Rich

    Mark Rich Second Unit

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    Frank,

    Yes some coax is suitable for subwoofer use.

    Canare GS-6 is a stranded 18AWG construction. Available at numerous on line cable suppliers. Its relatively cheap.Let me know where you are located and I'll suggest some suppliers.

    Belden 89259 uses a uniquie set of materials which are hard to find in a similar coax cable.

    Stranded bare copper center conductor (22awg), bare copper braided shield ( not tinned copper or aluminum), Teflon insulation and a Teflon jacket.

    It is expensive because of the above construction. If you need less than 100' then you will a hard time finding it. There are a lot of places to purchase it in 100' rolls but only a couple of places that will sell it by the foot.

    In Canada try RhinoCables.com - They sell pre-made sub cables using this cable. Occasionaly I have seen raw cable for sale.In the USA try Boldercables.com - they sell raw cable and pre-made cables.

    Another good source is Diycable.com - These guys sell cable kits as well as pre-made cables.

    Hope this is of some assistance
     
  8. Frank Chang

    Frank Chang Agent

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    I live in Denver, Colorado
     
  9. Mark Rich

    Mark Rich Second Unit

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    For Canare GS-6 one source is markertek.com

    Your home town should have suppliers though. Its a popular guitar cord.

    bettercables.com used to use it for their sub and audio cables if my memory serves me correctly.
     
  10. Lou Balch

    Lou Balch Auditioning

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    Am using Monster Z-Bass cable with great success.
     

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