Center speaker OR Full range as Center speaker?


What is your thought on this subject?

For HT setup, center speaker is very important since ~70% of the recording consists dialogue, depending on whether or not the movie is action or drama. Some say this is why center speaker is designed specifically for such purpose. Some, on the other hand, recommend to use full range matching speaker as the center. For the center speaker in a HT setup, what would you do if you had to choose between a specifically designed center speaker and a full range speaker? May I consult with A'gon members for this trend of thought.

If you had big box like B&W or Wilson Puppy, would you pursue this option? If you have HT Magnepan, would you use MG center or MG full range to hang on the wall to improve the WAF condition? If you had Thiel monitor with stand, would you use all 5 matching Thiels? If you had Definitive, would you use all full range or its specifically designed center speaker? Would you change your system around to pursue this option?

What are the pro and con of using a full range as center speaker? How many have done so, and what is your opinion? Thank you for your input.
lej1447
A well designed center channel speaker, driver and timbre matched is preferred. AS pointed out, it is easy to slip into poorly done center channel speakers which of course due stink heartily compared to using a fullrange speaker.

But I am referring to getting a center actually designed well, (not cheaply or offhand by a non-HT focused manufacturer) and matched. A good center is not a speaker on its side and is not designed that way. DTS concert DVDs are often produced to emphasize center vocals in balance with background vocals to the mains.A Center channel is necessary to hear the optimal intent of the sound engineer, because this is how it was mixed to be heard. And an intended center channel speaker is the best choice. Of course using a standard 80hz crossover makes a full range even less of a consideration. in that scenario signal frequency below 60 HZ ( 80hz is not a brick wall) is all gone to the subwoofer(s) so full range mains and centers in HT is largely a waste anyway.

I've set up HTs both ways with decent results in each case. But a dedicated center is definetly the way to go.
Rysa4, you make a good statement: "But I am referring to getting a center actually designed well, (not cheaply or offhand by a non-HT focused manufacturer) and matched. A good center is not a speaker on its side and is not designed that way." Unfortunately, this is a principle rarely adhered to. The vast majority of dedicated centers are inferior in design. Aside from specific cases, I'd sooner make the general advise I did than recommend the "matching center channel from the same manufacturer."

As for the choice between full range and one with limited bass (regardless of physical configuration), my choice is dictated by the fact that I am more concerned with SACD and DVD-A reproduction of music than with HT. So, for me, full range or pretty close to it.

Kal
Thanks Kal. I agree with your post entirely. For multi-channel audio, fullrange is obvious and also assume dipole/bipole is out as well in that instance for surrounds.

WE have been so focused on left and right channels for so many decades and its gotten to where there is some really nice stuff out there at many price points. It really isn't suprising that quality enginerring for a center channel speaker simply lags in the majority of cases in the consumer market.
Hi all,

Thank you very much for your responses. I really enjoy reading all these interesting responses. My current HT setup is a 5.2, and I do have a dedicated center. Similar to the B&W wall series, my full range speakers are the AR Phantom 8.3 series. They are ~ 4" thick, 28" long, 12" wide. Drivers are 1" titanium tweeter, 2" magalloy mid, 8" Illusion Audio TM carbon woofer. FR 45Hz-20kHz, 89dB sensitive, 50-250W power handling.

At this time, all full range speakers are mounted vertically on the wall. If I mount another full range as the center, it has to be mounted horizontally for the WAF. What this means to me is that midrange will be center while the woofer will be to the left as the tweeter is to the right, or vice versa. I listen to DVD-A & concert DVD in DTS. I am wondering if mounting the full range horizontally will have any sonically adverse affect?

How do you guys do it? I have a 42" plasma. Would you please advise me on what to do, i.e. to use the full-range center or dedicated center? Thank you all for shedding some lights on me.
My experience has been that, ideally, 3 matching across the front is best. That however needs to be quantified in the context of the system/room/setup. Basically, a lot of full range speakers, or mini's for that matter, aren't really all that capable of producing solid, dynamic, coherent, and focused sound, period!...inlarge, they make ineffective movie speakers IMO. And I've sold alot of audoiphile speakers over the years.
There is something to be said for a good speaker for movies vs. just for music. Dual midrange/bass woofers, or others.
Having reinforced midrange, bass and treble drivers, either using horns, or dual/multiple mid/bass drivers, multiple tweeters, large pannels, and/or high efficiency designs in general(like active's, horns, multiple driver array's, etc) often make for a more solid home theater speaker. This is especially true in the critical center channel, where a lot of action is mixed!
Basically, there are a number of designs that are just to week, laid back, uninvolving, "open", and polite sounding do to true justice to what I call "the hard stuff"!
But, there are considerations.
If you have to use a traditional designed stereo speaker for HT dubties, they most always work much better not only crossed over as "small", but used in a smaller setting, or where you sit acoustically "closer" to the speakers...thus you hear more dirrect sound vs. reflected sound from the room boundaries. This tends to "reinforce" the sound from the speakers more for your ears.
Still, all things equal, I'd say it depends greatly on the design of the speakers.
Also, since most typical full range consumer home audio speakers are passive, and low on efficiency/sensitivity, it often makes for better control and powerhandling when you cross over the speakers as "small", and dictate the more demanding dynamic bass info for an "active" speaker, like a powered subwoofer.
Now I have head some full rangers that do pretty darn well as "full range", and as center channels. Big Dunlavy's, Avantgard horns, PSB Stratus Gold's, Infinity Prelude MTS's,NHT VT3's(powered subs) and other powered models, maybe a wilson WATT PUPPY, and other larger, higher efficiency designs.
Ok, this is all my experience, and you can really do what you want. I just think some designs don't do it so well.