Hi, all:-
What's in these things? A friend is interested in extending some high end microphone cables (not line level). Does this make any sense?
Some (eg. instasnake) seem to pass phantom power- as well. Transformers and blocking capacitors per channel?
How long a hop is he looking for? I Use Neumann and Canare mic cables. Maybe I should put them all in sequence for a 350' hop as a test but I routinely use 100' at mic level and have never had a problem.
G=B2
Not much. The best option is to use shielded twisted pair microphone cable all the way. I don't see the need for baluns either unless the cable length is several km/miles.
-- Failure does not prove something is impossible, failure simply indicates you are not using the right tools... nico@nctdevpuntnl (punt=.) --------------------------------------------------------------
What about using CAT5 (4 twisted pairs) to carry 4 microphones?
I've asked what the max length he's interested in. For now, I'd guess
100 feet or more, judging by the 30' tripods he bought.Best regards, Spehro Pefhany
-- "it's the network..." "The Journey is the reward" speff@interlog.com Info for manufacturers: http://www.trexon.com Embedded software/hardware/analog Info for designers: http://www.speff.com
I wouldn't go that route. Microphone signals are very weak. 20dB amplification is often required to get to line level. A single shielded cat5 cable for each microphone probably works.
-- Failure does not prove something is impossible, failure simply indicates you are not using the right tools... nico@nctdevpuntnl (punt=.) --------------------------------------------------------------
For length, 50-250 feet, with 100 feet as the nominal is about right.
Do you think they actually have transformers at each end? If so, $300 is reasonable for 8 high quality audio transformers, connectors etc. I think he'd be p*ssed off if he got them and there was nothing inside.
Best regards, Spehro Pefhany
-- "it's the network..." "The Journey is the reward" speff@interlog.com Info for manufacturers: http://www.trexon.com Embedded software/hardware/analog Info for designers: http://www.speff.com
Microphones are already balanced, and so are mic pre-amps, so baluns are quite inappropriate..Dynamic mics are 2 wire devices, so connect right onto the Cat5e. Condenser mics are another thing, and need a return path for the phantom power (perhaps the overall screen, or dedicate a pair to ground?). I have actually used multiple dynamic mics over a single Cat5e with no problems of any kind, although I did keep the cable away from nasty interference sources; I seem to remember that the mic screens were all grounded at the box at the mic end of the Cat5e. And there might be a case for adding a few small caps across the receiver end to drain the RF energy from the antennae. Tony
ElectronDepot website is not affiliated with any of the manufacturers or service providers discussed here. All logos and trade names are the property of their respective owners.