6-pin FireWire cable , 4-pin IEEE1394 cable, What is the difference?

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mwwhite
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2007/06/12 14:23:53 (permalink)

6-pin FireWire cable , 4-pin IEEE1394 cable, What is the difference?

6-pin FireWire cable , 4-pin IEEE1394 cable, What is the difference?

thank you,
Michael
#1

14 Replies Related Threads

    inmazevo
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    RE: 6-pin FireWire cable , 4-pin IEEE1394 cable, What is the difference? 2007/06/12 14:25:27 (permalink)
    4-pin lacks the power connectors... data only.

    - zevo
    #2
    jinga8
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    RE: 6-pin FireWire cable , 4-pin IEEE1394 cable, What is the difference? 2007/06/12 14:33:14 (permalink)
    BTW, IEEE1394=Firewire. But you probably already know that part...
    #3
    ohhey
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    RE: 6-pin FireWire cable , 4-pin IEEE1394 cable, What is the difference? 2007/06/12 14:36:35 (permalink)

    ORIGINAL: jinga8

    BTW, IEEE1394=Firewire. But you probably already know that part...


    Also may go by the name iLink on some brands, in fact there may be other names for it also.
    #4
    mwwhite
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    RE: 6-pin FireWire cable , 4-pin IEEE1394 cable, What is the difference? 2007/06/12 14:37:53 (permalink)
    ORIGINAL: inmazevo

    4-pin lacks the power connectors... data only.

    - zevo


    Will a 6-pin, such as a “Presonus Firepod” would have, work with a 4-pin?
    Do I use an adapter? ……..:)

    Newbe,
    Mikey
    #5
    inmazevo
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    RE: 6-pin FireWire cable , 4-pin IEEE1394 cable, What is the difference? 2007/06/12 14:59:38 (permalink)
    ORIGINAL: mwwhite
    ORIGINAL: inmazevo
    4-pin lacks the power connectors... data only.
    - zevo

    Will a 6-pin, such as a “Presonus Firepod” would have, work with a 4-pin?
    Do I use an adapter? ……..:)
    Newbe,
    Mikey


    Sure it will work as long as the cable terminator is the correct one.
    Don't shove a 4 pin cable in a 6 pin outlet, of course. Make sure its appropriate, as you probably know.

    You can buy FW cables that are:
    4 pin on one side, and 6 pin on the other
    4 pin on both sides
    6 pin on both sides

    And, of course, there are adapters to make a 4 pin jack into a 6 pin jack, and vice versa.
    They ONLY adapt that which they have, so making a 4 pin into a 6 pin doesn't add power (it just makes the connectors fit), but I've even seen special adapters for that these days.

    I'd suggest just getting a cable that meets your needs.

    How many pins are coming off the machine?
    How many pins are coming off the interface you're using?
    Does the interface require bus power, or does it also have a power cable?

    - zevo
    post edited by inmazevo - 2007/06/12 15:06:07
    #6
    plasmaflow
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    RE: 6-pin FireWire cable , 4-pin IEEE1394 cable, What is the difference? 2007/06/12 21:23:16 (permalink)
    Important factoid - most laptops have a 4-pin socket and CANNOT supply power to a firewire audio interface such as RME's Fireface 400 which has a 6-pin socket. Therefore, with a laptop you need a 4-pin to 6-pin cable and a separate power supply for the firewire audio interface.

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    #7
    tunekicker
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    RE: 6-pin FireWire cable , 4-pin IEEE1394 cable, What is the difference? 2007/06/13 00:02:46 (permalink)
    Important factoid 2:

    Some firewire interfaces with 6-pin connections don't require power to connect.

    My Digi 002 Rack is an example.

    Peace,

    - Tunes
    #8
    mudgel
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    RE: 6-pin FireWire cable , 4-pin IEEE1394 cable, What is the difference? 2007/06/13 06:33:14 (permalink)
    Take care with 6 pin firewire connectors. They can be inserted upside down.
    On a 6 pin connection the plug that goes into the socket has a flat end and a rounded end to prevent this BUT on some cheap connections the shroud around the socket can be really sloppy and allow you to unwittingly plug it in upside down because the internal profile of the plug is symetrical.

    Also make sure that the device you're are connecting is not powered on when you insert the plug. that is if the PC is powered on then make absolutely sure that the other device eg soundcard is off.

    If you insert the connector upside down you'll likely fry the Firewire circuitry which could be very costly to repair.

    There doesn't seem to be a possibility to insert the 4 pin connector the wrong way.

    Take it from someone who learned the hard way.

    Mike V. (MUDGEL)

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    #9
    jweldinger
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    RE: 6-pin FireWire cable , 4-pin IEEE1394 cable, What is the difference? 2007/06/13 11:12:05 (permalink)

    ORIGINAL: inmazevo

    4-pin lacks the power connectors... data only.

    - zevo


    While that may be true for your hardware, it isn't completely factual for all scenarios.

    Excerpt from TASCAM's FW-1082 Setup Guide...

    "The cable supplied with the FW-1082 is 6-pin to 6-
    pin—some computers are only fitted with a 4-pin
    IEEE 1394 connector, and we recommend that for
    full bandwidth, you use a computer with a 6-pin
    IEEE 1394 connector."

    Case in point - I have two Firewire controllers in my laptop, one 4-pin and one 6-pin. Both use TI's chipset. When I connect using 6 pins I have no problems recording 8 simulaneous channels at 24-bit, 48kHz. If I connect using 4-pins I get so much latency that I may as well pack up my setup and go home.

    Regards,
    Joe
    #10
    inmazevo
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    RE: 6-pin FireWire cable , 4-pin IEEE1394 cable, What is the difference? 2007/06/13 12:24:29 (permalink)
    So is Tascam suggesting that the other two pins are also for data?

    Fascinating.

    Take care,
    - zevo
    post edited by inmazevo - 2007/06/13 12:37:59
    #11
    ohhey
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    RE: 6-pin FireWire cable , 4-pin IEEE1394 cable, What is the difference? 2007/06/13 12:39:08 (permalink)

    ORIGINAL: inmazevo

    So is Tascam suggesting that the other two pins are also for data?

    Fascinating.

    Take care,
    - zevo


    I don't think so... take a look at this -> Firewire pinout

    Maybe they think the contacts are larger and give better connectivity ?
    #12
    alpegmusic
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    RE: 6-pin FireWire cable , 4-pin IEEE1394 cable, What is the difference? 2007/06/18 17:34:39 (permalink)
    I often use a Presonus Firepod (6-pin Firewire socket) with a Compaq notebook (4-pin). I had to buy a cable with 6 pins on one end and 4 on the other. The 'pod has its own power supply so the two power pins are superfluous, anyway.

    Good luck and don't let the technology get in the way of making music!

    -Al

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    -Al
    #13
    calaverasgrandes
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    RE: 6-pin FireWire cable , 4-pin IEEE1394 cable, What is the difference? 2007/06/18 19:20:14 (permalink)
    there are also firewire adapters for notebooks that take external power (wallwart) to supply the 6 pin power. These are carbus devices though. Somebody should make a 6 pin-4pin with power adapter built in. But it seems that 1394 has waning support. Nobody builds it into the south bridges like with USB 2.0. And many manufacturers that had mostly firewire audio boxes a few years ago seem to be giong USB 2.0 now (MOTU for one)

    That one about the tascam preferring the 6pin for data. I can only surmise that the presence of ground keeps the error rate down.

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    #14
    inmazevo
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    RE: 6-pin FireWire cable , 4-pin IEEE1394 cable, What is the difference? 2007/06/18 19:51:59 (permalink)
    ORIGINAL: calaverasgrandes
    there are also firewire adapters for notebooks that take external power (wallwart) to supply the 6 pin power. These are carbus devices though. Somebody should make a 6 pin-4pin with power adapter built in.


    I actually searched around when this thread first came up and found a cable-based 4-6pin adapter that added power.
    It was clunky looking, as it had a separate wire hanging off that you hooked to an external power plug (probably a wall wort). At least you could actually disconnect the power when you didn't need it, and the cable was back close to a normal firewire connection.

    I've since not been able to find the link, but I found it during a google session on 4pin-6pin cables.

    - zevo
    #15
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