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7K views 31 replies 14 participants last post by  Kal Rubinson 
#1 ·
Need recommendations on a center channel to put between 2 definitive technology 800 speakers. I have $200.00 to spend.
 
#4 ·
Putting the same speaker on its side will sound better. Having the tweeter aligned directly with the woofers gives you more horizontal lobing.. Read this article to find out why having a two way on its side is better than that center.

http://forum.blu-ray.com/showthread.php?t=89614
 
#5 ·

Quote:
Originally Posted by flyng_fool  /t/1426431/center-channel-recommendations#post_22346352


Putting the same speaker on its side will sound better. Having the tweeter aligned directly with the woofers gives you more horizontal lobing.. Read this article to find out why having a two way on its side is better than that center.
Not really.  Any horizontal array will have lobing problems whether it is an MTM or an MT bookshelf design. 
 
#6 ·

Quote:
Originally Posted by Kal Rubinson  /t/1426431/center-channel-recommendations#post_22349187


Not really.  Any horizontal array will have lobing problems whether it is an MTM or an MT bookshelf design. 

...but if I've understood your, and others, comments correctly...


...the MT will have lobing only in the crossover region


...whereas the MTM will have lobing in the entire range of the two Ms plus the crossover range
 
#7 ·
#8 ·

Quote:
Originally Posted by rick240  /t/1426431/center-channel-recommendations#post_22349270



...but if I've understood your, and others, comments correctly...

...the MT will have lobing only in the crossover region

...whereas the MTM will have lobing in the entire range of the two Ms plus the crossover range
 
Quote:
Originally Posted by flyng_fool  /t/1426431/center-channel-recommendations#post_22349749


Exactly.
http://www.audioholics.com/education/loudspeaker-basics/vertical-vs-horizontal-speaker-designs
In theory.  However, the lobing is dependent on driver spacing and only significant when the driver spacing exceeds 1 or 1/2 wavelength (depending on who you believe).  Thus, "the two Ms" will have problems only at the upper end of their ranges and not at the lower end.  So, it comes out to the same issue:  Major lobing problems are generally in the crossover range, regardless of the number of drivers.
 
#9 ·
I suggest that you get the Cambridge Audio S50; it should be perfect for that setup, and it just happens to cost $200. You should no problems at all with that combination.


Quote:
Originally Posted by cowboys88  /t/1426431/center-channel-recommendations#post_22345627


Need recommendations on a center channel to put between 2 definitive technology 800 speakers. I have $200.00 to spend.
 
#10 ·
I still say getting one of his L/R will still be the best match since it's the exact same speaker.
 
#11 ·

Quote:
Originally Posted by flyng_fool  /t/1426431/center-channel-recommendations#post_22351285


I still say getting one of his L/R will still be the best match since it's the exact same speaker.

+1


I have SuperZero 2s and use one laid over on its side for a center and notice no issues whatsoever.
 
#13 ·

Quote:
Originally Posted by Kal Rubinson  /t/1426431/center-channel-recommendations#post_22352198


Not everyone hears the problems and that's OK.
I'm ok, you're ok, we're all ok!
 
#16 ·
You need to call the manfacture to see if putting it on its side is acceptable, to many variables. But usally a center will have more mid rang drivers since it plays 80% or more if the voices. But whatever you gde get one that matches you have limited choices if you get another brand or a speaker that is not voiced the same it will stick out like a sore thumb.
 
#18 ·
You're not making any compromises if the tweeter radiates equally in all directions.
 
#19 ·

Quote:
Originally Posted by flyng_fool  /t/1426431/center-channel-recommendations#post_22354659


You're not making any compromises if the tweeter radiates equally in all directions.
Nope.  In fact, it can be ameliorated with controlled dispersion but that kind of sophistication is beyond most middle-market products.
 
#20 ·

Quote:
Originally Posted by Kal Rubinson  /t/1426431/center-channel-recommendations#post_22354815


Nope.  In fact, it can be ameliorated with controlled dispersion but that kind of sophistication is beyond most middle-market products.
There are plenty of middle market controlled dispersion speakers. Or am I not understanding your response?
 
#21 ·

Quote:
Originally Posted by flyng_fool  /t/1426431/center-channel-recommendations#post_22354871


There are plenty of middle market controlled dispersion speakers. Or am I not understanding your response?
The point I was making is that "if the tweeter radiates equally in all directions" it will not resolve the lobing problems associated with horizontally arrayed drivers.  In fact, controlled dispersion is possible way to ameliorate the problems.
 
#24 ·

Quote:
Originally Posted by Jay1  /t/1426431/center-channel-recommendations#post_22355716


The vertical null of a TM system is a phase alignment issue, it doesnt matter if it's CD or not. The best compromise for most people should be a vertical TM under the screen tilted back slightly.

Even then, it is still compromise. You are not completely on axis with the tweeter, and if you are then other seats will not be. More importantly, you lose sensitivity and gain distortion in a TM design over an MTM design. It is compromise no matter what unless you have a transparent screen with speakers exactly aligned, and usually those speakers will have a small line array (MTMMM) or need to be a well designed speaker to not run into compression/distortion at reference levels.
 
#25 ·

Quote:
Originally Posted by Kal Rubinson  /t/1426431/center-channel-recommendations#post_22355622


The point I was making is that "if the tweeter radiates equally in all directions" it will not resolve the lobing problems associated with horizontally arrayed drivers.  In fact, controlled dispersion is possible way to ameliorate the problems.
ah, I see what you meant now. I guess my point was if the tweeter radiates equally in all directions, then laying it on its side would not make it sound differently, right? (at least I think so, I still have much to learn)


But I very much agree with you vis a vis the directivity and controlled dispersion.
 
#26 ·

Quote:
Originally Posted by flyng_fool  /t/1426431/center-channel-recommendations#post_22356773


ah, I see what you meant now. I guess my point was if the tweeter radiates equally in all directions, then laying it on its side would not make it sound differently, right? (at least I think so, I still have much to learn).

As I understand laying the speaker horizontally doesn't create lobing, it just changes it from being in the vertical direction to the horizontal direction. Lobing happens because there are two source producing sound in the same frequency range and the two waves combine either cancelling or adding causing audible effects.


The point is that most people sit at the same vertical level when watching a movie but are horizontally dispersed in front of the screen.


Hence - vertical lobing is a non issue - horizontal lobing can be an issue with wide horizontal dispersion of people and/or particular speaker designs.
 
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