For this reason, it’s important that any stereo signal be mono-compatible: in other words, that the sum of the two channels does not result in any irregular sound.ĭepending on phase differences between these two signals, interference can occur constructively or destructively-or more likely-a combination of these two because phase differences commonly vary with frequency. Another way to look at this is that the two channels will partially sum within the acoustic space. This is because the two loudspeakers are in a common acoustic space so your left ear will hear some amount of the right channel, and your right ear, some of the left channel. On the other hand, stereo loudspeakers result in some amount of crossfeed, or the blending of left and right channels. This results in a highly-controlled listening environment that works very well for stereo imaging. You’ll also eliminate any room acoustics that may affect the sound. This is because, with headphones, you’ll hear only the right channel in the right ear, and only the left channel in the left ear. The location of the loudspeakers relative to your ears will have a huge effect on this stereophonic illusion for example, headphones will be able to create a much better illusion than a pair of speakers spaced closely together. So, in theory, using two or more loudspeakers, it should be possible to create the illusion of sounds emanating from any direction. Using only our two ears, we are-to a large extent-able to determine the direction of sounds. Let's start with a definition: Wikipedia defines Stereophonic sound, or simply stereo, as “a method of sound reproduction that creates an illusion of multi-directional audible perspective.” More simply put, stereo is sound that appears to emanate from multiple directions. What about two different amp types? Ah, well we'll get to that and why that's a bad idea. If you run the same signal to both, it's just dual mono. Simply having two amps is not necessarily stereo. "What's so hard about running stereo? It's just two amps." Well, yes and no. I will try to keep this general, but it's really geared toward the musician who uses pedals and amps. However, if you follow the straightforward outline that I provide here, you will more than likely end up with a great-sounding stereo rig without any weird issues.
Please note that just because you may be doing it "wrong," as I claim, it may still work for you but this is probably a serendipitous result of trial-and-error and will be less tolerant to changes in your signal chain. I will try to explain why as simply as I can, but it does get a little technical. There are "right" and "wrong" ways to construct a stereo signal chain. I can already tell that I'm going to catch hell about this topic, but just hear me out.
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