a short diary of some part of my life.

Originally Posted by slybasil View Post
just recieved a new wyred4sound amp. 7×500. Havnt had the chance to hook it up yet. I will try to get it up and running this weekend if I have time. I did open up the box. It comes doubled boxed and set into a foam support.
I have to say that the unit itself is a lot nicer looking then the web site pictures indicate. I wanted to hook it up with XLR connectors but there is no place around that has them under 20′ or you want to spend $110 (3′) per cable x 7. (not a snow balls chance in hell.)

perhaps EJ can chime in about SQ between balanced or unbalanced connectors. I might go with RCA connectors until I can order XLRs.

Even though the amplifier will be driven balanced on a single-ended source, there are many advantages to using balanced (XLR). This would mainly be beneficial if you can connect from the beginning with XLR all the way to the amplifier.

An RCA connector consists of a + signal, and ground (shield). An XLR connector consists of a + signal, – signal, and ground (shield).

When using RCA, the ground (shield) is connected to the – signal input on the amplifier. If you have any noise or interference in your system, it will be amplified through the amp, and out your speakers. The amplifier then derives the – signal from the + signal by inverting it 180deg out of phase with respect to the + input.

When using XLR the + and – signals are a product of the source, and the ground is simply a shield. The major advantage is that the ground or shield isn’t tied in with any of the signals. Not to mention that neither of the signals are “made up”, or referenced to ground.

All in all, we have found that XLR connections have a much better sonics than RCA. The most noticable would be that the noise level is reduced. Some of the cheapest XLR cables, can be much better than some of the expensive RCA’s, so that would be something to consider. However, if you have a REALLY quiet system (noise), you wouldn’t see much improvement.

EJ Sarmento


Someone asked this question at

Finally, this is the best short straight forward answer that I can find on the net about XLR Vs. RCA connections. Thanks EJ!


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