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Discussion in 'Converters / Interfaces' started by silent_nick, Jun 6, 2003.

  1. silent_nick

    silent_nick Guest

    does anyone know how long a firewire (IEEE 1394)cable can be before you start losing data? i found a place that sells 10m firewire cables and i could really use one for my studio but I don't know if it's too long...

    i'm running a MOTU 24 i/o into a P4 2.4.

  2. Opus2000

    Opus2000 Well-Known Member

    FireWire 1304a can only go 15 feet...after that you need a FireWire repeater.

    FireWire 1394b can go up to 300 feet! In fact I just ordered the 33 foot 1394b cable and am awaiting it's arrival as I have two 1394b PCI cards waiting to be connected!!!

    Can't wait!!


  3. Blutone

    Blutone Guest

    Well....la...dee...da. LOL :D
    One day I hope to have half the stuff you have, Gary.

    BTW, how much is half of "A shitload of stuff"? LMAO
  4. Blutone

    Blutone Guest

    300ft. with no repeater?
  5. Opus2000

    Opus2000 Well-Known Member


    Well, are you considering software or just hardware? Or both?


    Opus :D
  6. silent_nick

    silent_nick Guest

    How do I know what kind of firewire a system uses. I have a MOTU 24 I/O. It doesn't say which type on their website. Well, actually it uses it's own protocol which they call Audiowire. It just connects using firewire cables and connectors...

  7. Opus2000

    Opus2000 Well-Known Member

    That indeed is correct. The FireWire that MOTU uses is based upon the original 1394a which is only limited to 15 feet at the most.

    With audio units using FireWire I can not say whether using a repeater will work or not.

    Repeaters are more for networking data. Not sure about audio.

    At the present moment there are no 1394b audio devices as it is brand new and most people do not have 1394b in their computer systems.

    It will take some time before this is truly available as a mainstream.

    Me, I'm usually on the top of the cutting edge so that's why I have the two 1394b PCI cards!

    Just to go over this:

    1394a is 400 MegaBits per second...so that equates to(8 divided by 400) 50 MegaBytes per second.

    1394b is 800 MegaBits per second which equates to(8 divided by 800) 100 MegaBytes per second!

    Also 1394a uses a 6 pin cable while 1394b uses a 9 pin cable.

    From what I have heard is that you need to be extra careful on making sure the 1394b 9 pin is properly seated. If not it may fry the PCI card!!!!!


    Opus :D
  8. JBlake

    JBlake Guest

    Hey Blutone,

    Yeah, Gary has a ton of $*^t. The kicker is he most likely got alot of it for free.

    rat bastid
  9. Opus2000

    Opus2000 Well-Known Member

    Neener Neener Neener....

    Opus :p
  10. Blutone

    Blutone Guest

    Oh, I know. Dontcha just hate him. :D
  11. falkon2

    falkon2 Well-Known Member

    Rated speed, my dear Watson. ;)

    Still, practically, firewire is insanely fast.
  12. Opus2000

    Opus2000 Well-Known Member

    yes, rated indeed...imagine if you were able to get those speeds when using the 1394b!!

    WOWEE! lol

    Opus :D
  13. falkon2

    falkon2 Well-Known Member

    Well, when more USB devices become USB2.0 compliant, I fear there's going to be a shootout of sorts. I'm actually staking my bets on USB.

    Say, that's actually a good premise for nice, civil discussion. What has firewire got that USB2.0 doesn't have, and vice versa?
  14. Opus2000

    Opus2000 Well-Known Member

    I'll tell you what FireWire has over USB 2.0....

    Official support from Microsoft! XP is the first OS that truly doesn't have integrated support for USB 2.0 devices.

    FireWire is more supported than USB!

    Pretty much all companies are focusing on FireWire than they are on USB in terms of audio or even external devices.

    In fact USB is more CPU intensive than FireWire even if it is 412MegaBits per second!

    Yes, indeed more and more computers are coming equipped with USB 2.0 but that don't mean diddly in the long run without true official support from the OS!

    Opus :D
  15. silent_nick

    silent_nick Guest

    If firewire-A can only go up to 15 feet then why is a company making and selling 32 foot cables? http://www.firewirestuff.com.

    Are they just trying to make money off of people who don't know the exact specs like myself? If so, they are assholes.

    Oh by the way - I would like to say a big THANK YOU to Opus and everyone else who has helped me. I consider your knowledge and advice to be incredibly useful and i treasure it.... thank you.

  16. Opus2000

    Opus2000 Well-Known Member

    That my friend is a good question as to why they do...I'm wondering if they're more for the 1394 cards where you can get adaptors to make them work on 1394 b devices?!! I'm not sure...

    Regardless of that it is a known fact that you are limited to 15 feet before you need a repeater of some sort!

    I will see what I can find out but I'm not sure it's relevant now with 1394b!

    In fact I will have my 33 foot 1394b cable tomorrow and will be installing the second 1394b PCI card in my other system(the one in the living room) and then connecting the cables and see what happens from there!

    Lol, next time I'll be posting it will be from my TV! ha ha ha ha ha!!

    Opus :D

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