Why Your Center Channel Speaker Isn’t Important
You’ve heard it said (or read it written) probably thousands of times before. The center channel is the most important speaker in your system. “That’s where all the vocals come from,” they say. If you can’t hear the voices, how will you understand what is going on? Clearly, the most important speaker in your system, right? Wrong. We are here to tell you that the center channel speaker is the LEAST important speaker in your system.
The Center Channel Speaker can be Removed and you Lose Nothing!
Run your receiver’s auto-setup and leave off one speaker. You choose. If you remove your surround back speaker or subwoofer, you can probably still run the auto-setup. But if you try and remove the front left or right or one of the surrounds, and the auto-setup will fail. It just doesn’t know how to handle it. Not so with the center channel.
Welcome to the wonderful world of the phantom center. When you don’t have a center channel, your receiver will matrix the sounds meant for the center into the front left and right speakers. You know this as stereo imaging and it is something your front speakers do very well. This preserves all the center speaker information so that NONE is lost. Drop out a surround speaker or a subwoofer, and some information will be lost. And don’t talk to me about how you have full-range speakers. We’ve already discussed how you don’t and, even if you did, they are in the wrong place for bass. You are definitely losing something by omitting a subwoofer in your system.
The once caveat here is that some receivers can run in 6.1 instead of 7.1. This would preserve all the surround back information. I’ll give you that. But who is running a 6.1 system these days? With the possibilities of slap-echos making your surround back sound seem like they are coming from the front, 6.1 is often more trouble than it is worth.
The Genesis of Bad Advice
Why do people say the center speaker is so important? This advice came from the days of Home Theater in a Box sets. Those sets were inexpensive, cheaply made, and often didn’t sound very good. People would look at those sets and buy the one with the biggest center speaker. They’d recommend those systems saying, “Most of the most important sounds are coming from the center anyhow, so buy the one with the biggest center.”
This advice makes perfect sense in context. On those inexpensive speaker sets, adding a slightly larger and more capable center can offset any dialogue intelligibility issues you might encounter. Plus, the rest of the speakers sucked so a person buying these sets really only cared about dipping their toe into surround sound while making their system louder. But out of context, the advice breaks down. If you have capable front speakers, the center becomes much less important.
The Case for the Center Channel
So if the center channel speaker isn’t important, why do we have them? Well, there are obvious advantages to incorporating a center channel. First, to create a convincing phantom center image, the listener has to be seated between the front speakers. Preferably centered between them. That is rarely the case. The center channel speaker locks the voices near the display.
In larger home theaters, a center channel can help with side to side pans. Our ears are much more discerning locating sounds in front of us. If your front left and right speakers are placed far apart, there can be a “gap” in the sound as it pans from side to side. This is why we are so worried about getting three front speakers that are timbre matched. Timbre matching means that the speakers sound the same as each other. We do this by buying three identical speakers or (more likely) buying a center channel that was voiced by the manufacturer to match their front speakers.
Lastly, there are real, genuine reasons for wanting a center channel. With a center channel in place, you can increase the volume of the vocals outside of anything else. For those with hearing issues, this can be a real boon. There is literally no other way to boost just the vocals without a center channel.
Just Because your Center Channel Speaker isn’t Important, Doesn’t Mean you don’t Need One
While your center channel speaker isn’t important for getting all the sounds you were meant to get, it is an important part of a fully functioning home theater. It locks the center channel sounds near the display, it helps with side to side pans, and it isolates the vocals so that you can change just the volume of the speakers. For some, these are invaluable. But blanket statements like, “The center is the most important speaker in your system,” are demonstrably false. Center speakers are nice to have. Some might think of them as essential. But they are the only speaker that can be removed from your system without losing one bit of information. For that reason, we believe that the center channel speaker isn’t important.