May be shielded or not, abbreviated UTP ( unshielded Triax cable Similar to coax, but with an extra layer of insulation and a second conducting sheath, providing better bandwidth and RFI rejection - for a price.Ĭopper cable, with insulation extruded over each conductor and twisted The star quad design described above also makes excellent speakerĬables for use in high noise environments. Or via transformer (see constant voltage). The coupling between amplifier and loudspeaker may be direct Used to interconnect the output of a power amplifier and the input of a Speaker cable An unshielded insulated pair, normally not twisted,Ĭharacterized by heavy (or large) gauge conductors (hence, low-resistance), Together at the connectors forming a two-conductor balanced line (alsoĬalled double balanced) with superior performance. The four conductorsĪre wound together in a spiral, and then opposite conductors are joined (hum reduction can be 30 dB better than standard mic cable).
A four-conductor cable exhibiting very low noise and hum pickup The first quad mic cable, but was not trademarked and is now a generic Quad mic cable or star-quad mic cable [ a term coined The very best audio cable may not be the best mic cable Unfortunately the term "mic cable" has become synonymous with general-purposeĪudio cable (as distinguished from speaker cable) when it can be Small gauge wire, and therefore, true mic cables are not intended for long So most mic cables use rubber, neoprene, PVC, or similar materials, with The best insulating materials are somewhat inflexible, Shielded twisted-pair, usually designed for low current, high flexibilityĪnd low handling noise. (typically less than 150 feet) use plastic fibers, while long distances Glass fibers to convey light and modulated information. A constant-impedance unbalanced transmissionĭata cable See data cables and Category cables. Surrounded with a heavy layer of insulation, covered by a thick surroundingĬopper shield and jacket. Types of cables (for all the details see Lampen): Technologies for the automation of homes and buildings in North America. Clarity ratings a logarithmic measure of the early-to-late arrival sound energy ratio for music the constant is 80 ms (C 80) and for speech it is 50 ms (C 50).īuildings Association) An industry association that promotes advanced
Extend mic cables or word clock cable professional#
And I recently visited a largish seller of professional audio equipment where it took a few salesmen before anyone understood what I was talking about when asking for the word-clock termination.C 50 (dB) C 80 (dB) Intelligibility.
The reason is that an unterminated line is more susceptible to noise and component drifts and that kind of things, and the whole idea of running the word-clock cable from the beginning is to get more precision in the timing. Only the last slave in the chain should have the termination connected.įor a short word-clock cable, perhaps a meter or a bit more, the termination might not strictly be needed (there are ways to calculate this, but that takes math I´ve mostly forgotten), it might be a bit belts and suspenders. Generally, you see this because there is a switch or whatever where you can disconnect it. Now, before going ahead buying the termination and T, check if your slave might have a built-in termination. Ĥ) The termination finally goes on the last open T, on the last slave. (Never, ever, connect the chain "through" a slave, using the in/out connectors). You want the 75 Ohm.ģ) Daisy chain the cable, from the T-connectors, slave to slave. Warning - most of these things comes in both 50 and 75 Ohm variations. It is picture number 4 (click on the picture and it expands), sort of like a T (two times male, one times female connector). Use the "Out" connector.Ģ) Now set one T-connector at each slave, at the "In" connector. In the right corner there is a white square where you can enter a search term, in this case they are part numbers in their catalog.ġ) Anyway, connect the cable to the master. Sorry for the Swedish, hope the pictures talk for themselves. I´ll point you to my electronics supplier for pictures. I have difficulty finding pictures of this on the net (had a few links before, lost them).
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