Quote:
Originally Posted by
ex-labdriver 
After a much more exhaustive search ref CC speakers - Mr Rumsfeld made me do it! - I have found that despite the deficiencies that evidently are found in many horizontal CC speaker designs, in the real world, most users do not find these anomalies significant nor objectionable enough to want to toss them out the window.
I think that in the real world most of those who listen critically happen to be sitting in the central "sweet spot" so they wouldn't notice that anything is amiss anyway.

Quote:
Originally Posted by
ex-labdriver 
So, in the average setting, most folks do not sit way off center nor continually walk around the listening area during a movie & therefore don't often experience the nasties that are obsessed about in the forums.
That's true enough for most cases, but then there are other cases (in the real world, too) where some seats are quite far off-axis--even more than 30 degrees. This is when the effects of comb filtering for typical horizontally-oriented centers can transition from barely noticeable to readily heard and objectionable for those who demand the best from their equipment. In my home theater, for instance, I have to use a vertically-oriented center speaker to ensure that at least dialogue is reproduced with the best possible quality and intelligibility for those who are seated far off-axis (unfortunately I don't currently have a dedicated theater room, so I don't control every aspect of my HT's layout). That said, there is still an improvement, albeit more subtle, for those who are only slightly off-axis, that I for one can hear and appreciate. If you MUST compromise with a center speaker that has narrow horizontal dispersion, then so be it, nobody is going to die from it, but if there is a better way, then that's what we should all at least strive for.
By the way, if the effects of comb-filtering don't matter for some folks, then maybe they don't need center channels at all. Most home theaters are small/narrow enough that it hardly matters that the center image shifts slightly for those who are off-axis--I bet that few would ever complain. As a matter of fact, more than a few HT enthusiasts swear by "phantom" centers, even preferring this configuration to having an actual center speaker. So why use a center speaker at all? Well, it mitigates some issues that discerning listeners/viewers have in off-axis seats. And why use a center that has wide horizontal dispersion (usually vertically-oriented)? Because for even more discerning viewers it clears up the issues that arise from using typical center speakers, providing the best sound quality for both on- and off-axis viewers.
Quote:
Originally Posted by
ex-labdriver 
As a layman, I surmise that the lack of negative comments/reviews on the net (there are only a few that I came across) about CC speakers of any brand or design is because these detrimental effects are just not noticed nor experienced to any major degree by most listeners. Overwhelmingly, they appear to be quite happy with their gear & the manufacturers seem to know that.
It's not surprising that most people aren't very discerning or picky about sound quality. I don't mean that in a condescending way--it's just how things are unless you have the interest to learn and the experience to tell good from bad, and better from good. Naturally, those who have developed their knowledge and hearing perception would expect relatively high-end speakers (compared to typical mass market gear) that cost a fair amount of money to, at the very least, do all the basic things right, from an engineering standpoint--heck, even dirt-cheap speakers can be designed properly in terms of driver placement, even if the materials and components used are necessarily inferior. It's sad and embarrassing when manufacturers take advantage of their customers' ignorance to eschew basic engineering principles, and oh yeah, we'll call them on it.