hii
what are the difference between "unbalanced to balanced converter" and "direct box"?
hii
what are the difference between "unbalanced to balanced converter" and "direct box"?
u didn't understand me!!!
there is a unbalanced to balanced converter:
for example
http://www.sonifex.co.uk/redbox/rbul2_ld.shtml
and there is a direct box, for example:
http://www.sweetwater.com/c957--Direct_Boxes
what are the difference in the functions?
both have RCA unbalanced input and XLR balanced output...
A direct injection box is the same thing as an unbalanced to balanced box.
They're used to send sound signals over a "long distance". This is because it cancels out any humm that may be picked up by the cables.
There's probably not a great deal of difference between the different makes other than the more expensive ones will have better quality components, or may have functions like an earth lift etc..
Balanced cables use two sets of wires to send the signal, taking an input noise and running it down both sets of wires, one running positive and one running negative. If this balanced cable runs close to a source of noise, like say a generator or a speaker, the noise gets added to both wires. At the other end, a circuit subtracts the negative from the positive signals canceling out the noise and leaving just the original signal. Crafty, eh? (Ethernet does the same thing)
This means that balanced audio cables can run for long distances with good quality - that's how live PA systems can have the band and the mixing desk so far away from each other and still have good results. For home use where all sound sources are inside the same room, it's not that important unless you're a pro recording studio who's obsessed with audio quality.
A DI box (http://www.sweetwater.com/store/detail/IMP2/) will take a line level unbalanced output of a guitar and convert it to a high impedence balanced mic level signal. A Balanced/Unbalanced converter (http://www.sweetwater.com/store/detail/CleanBox/) will do the same but may also change the levels, add some gain and alter the impedance along the way.
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