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Thread: Component video + (digital)audio: CAT5 vs "as is"

  1. #11
    Automated Home Jr Member
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    It is a pity Kat5 website is so out-of-date

    Regarding Kramer - the price difference is soooo huge that it makes me suspicious, whether that item is genuine.

  2. #12
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    ... and actually that Kramer item is video-only, no sound

  3. #13
    Automated Home Legend TimH's Avatar
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    Yep, sorry.
    I re-read the description and its not a switcher either but a 1:5 distribution amp.

    This might be more the thing: item # 200353686592 on www.ebay.co.uk
    (again, I've no connection with the seller)

    There's some info on the exact model here:
    http://www.erento.co.uk/hire/parties...907064652.html

    Stereo audio only though, not digital

    Other google results seemed to show the manual was also available for download.

    Cheers,

    Tim.

  4. #14
    Automated Home Jr Member nickgale's Avatar
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    We use Component matrix switchers all the time, however what you require is a component video and digital audio matrix switcher which severely limits your choice and I have never seen anything like that for less than 1000.

    Lektropacks do a 4 x 4 component switcher for 300.00 http://www.lektropacks.com/view_prod...ub1=16&show=16 and we've used them before for smaller jobs but that only has stereo audio not digital.

    If you do use stereo audio and component you will need two CAT5 cables. With the passive balluns the rule is pairs = no. of connectors, so a 4 pair cat 5 can take 3 x video (Component) and one digital audio coax signal. But for Component and stereo audio you'll need 5 pairs and two different balluns at either end.

    Cheers

    Nick

  5. #15
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    Quote Originally Posted by nickgale View Post
    We use Component matrix switchers all the time, however what you require is a component video and digital audio matrix switcher which severely limits your choice and I have never seen anything like that for less than 1000.
    GBP1000??? Hard to believe. Look, just $400:
    http://www.lenexpo-electronics.com/4...H-p-16574.html

    If you do use stereo audio and component you will need two CAT5 cables. With the passive balluns
    Well, I thought about active adapters - which could squeese all that into 2 CAT5 (or even one - as people here say)

  6. #16
    Automated Home Legend TimH's Avatar
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    Quote Originally Posted by svu View Post

    ...or even one [cable]- as people here say)
    For component video plus stereo audio you will need 2 cables. You'll get the component video and mono audio down a single CAT5, or component plus digital audio, but not component plus stereo...

    Cheers,

    Tim.

  7. #17
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    For a moment, I am looking for "component + digital". Out of curiosity, why does stereo audio take more bandwidth than digital?

  8. #18
    Automated Home Jr Member nickgale's Avatar
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    Bandwidth isn't the issue, it's physical channels that is. Digital audio is a single phono connector, stereo audio is two. Balluns are simple devices, they take an unbalanced signal and balance and impedance match it for twisted pair, at the other end they do the reverse so if you need 4 phono plugs at one end you can get it down a single cat 5 if you need 5 (component and stereo audio) they you need 5 pairs i.e. two cables. Active balluns can add other signals on top such as IR pass back but basically they work in the same way. Unless you're going a long distance then passive will be fine.

    Lektropacks are about to / have just launched a version of that matrix that adds digital audio - the CCMX44DA at around 350.00, not sure if they do / plan to do a 4 x 2 with digital audio - give them a call.

    My comment about the price is based on our experience of larger matrix switchers as that is what we tend to install (8 x 8) being the norm.

    Our standard installation is 1 x CT100 coax (for UHF) and 4 x cat 5 cables per TV, we've yet to be caught out by that. Sending video and audio over Cat 5 can be better than coax as the line is balanced and therefore will reject a large amount of noise picked up on the cable. This is the principal that has been adopted in the pro audio industry for years.

    Hope this helps

    Nick

  9. #19
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    Quote Originally Posted by toscal View Post
    .... not a pure CAT5 based solution the cable is a bit of a hybrid CAT5 CAT7 cable.
    That is to say that it is Cat5 with one pair extra shielded and thiker. This is by standard not even close to Cat7 as in the "Cat. standards" all four pairs pairs have to have the same minimal characteristics - right?


    @svu, you can also look at www.homenet-online.com

    There cable is even better than Cat7 - higher bandwidth up to satellite signal. So you could even put the upcoming TVs with build in freeview and freesat in. They have each pair of wires shielded (abitana only one - the "Cat7" pair) so that you can use different services on one cable without interference and emission.

    It is a passive system so that you can use any an all CatX devices, not only proprietor one giving you long time flexibility.

    The equipment you have and plan for today will not be what you will use in 10 years. And what looks like an overkill today might be just enough in a few years

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