Center Channel

wigginjs · 24th October 2004, 02:54 AM

I was hoping to get some feedback for a design I have been working on. It's a center channel speaker for my home theater. Attached is a sketch of the front baffle and the crossover I was thinking of using. It's a horizontal MTM using two of the new Dayton Reference 6" RS150S-8 and a Seas 27TDFC tweeter. The enclosure is approximately 1ft^3 (28L) tuned to 48Hz. I'd particularly be interested in feedback on my crossover as I have very little experience designing passive networks.

wigginjs · 24th October 2004, 02:55 AM

Here is the xover...

BillFitzmaurice · 24th October 2004, 12:35 PM

The biggest problem with centers is the usual side by side driver mounting, often required by the space available. Your box would do much better if the midbasses were mounted with their frames touching and the tweeter mounted above instead of in between.

LineSource · 24th October 2004, 11:25 PM

Personal Experience: For a center channel, some beaming is desirable.

Large diameter coaxial drivers have sounded best for center channel.

Started with old Jenson Tri-axial. Current center is Lambda TD15S with a coaxially mounted Seas Millenium, LR6 @1000Hz. Trim Millenium front plate, metal tripod coaxial mount in front of TD15S

paulspencer · 25th October 2004, 04:21 AM

Motion, you have a dedicated theatre don't you? In this case you could make it a tower speaker and orient it vertically. From a looks point of view, I think it would look better if it were a bit less chunky - longer in the longest dimension and not as wide.

If it MUST be oriented horizontally then perhaps you should consider:

* 3 way with a small midrange with a tweeter above
* a coax driver like the 6.5" seas with a matching midbass next to it

wigginjs · 25th October 2004, 10:02 PM

I understand the driver positioning isn't optimum. I was hoping to get some comments of enclosure size/tuning frequecy and especially the crossover design. Any ideas or comments regarding those?

4real · 26th October 2004, 01:48 PM

why not make a 2.5-way design with the same units and configuration. You do not have the problems of a normal horizontal MTM, and still have the looks of a normal center. Also, you don't need to make a baffle step compensation circuit

I still prefer the vertical MTM...

24th October 2004, 11:25 PM	#4
LineSource diyAudio Member Join Date: Sep 2003 Location: SiliconValley	Is beaming a desirable quality for center channel?? Personal Experience: For a center channel, some beaming is desirable. Large diameter coaxial drivers have sounded best for center channel. Started with old Jenson Tri-axial. Current center is Lambda TD15S with a coaxially mounted Seas Millenium, LR6 @1000Hz. Trim Millenium front plate, metal tripod coaxial mount in front of TD15S

25th October 2004, 04:21 AM	#5
paulspencer diyAudio Member Join Date: Sep 2003 Location: Melbourne, Australia	Motion, you have a dedicated theatre don't you? In this case you could make it a tower speaker and orient it vertically. From a looks point of view, I think it would look better if it were a bit less chunky - longer in the longest dimension and not as wide. If it MUST be oriented horizontally then perhaps you should consider: * 3 way with a small midrange with a tweeter above * a coax driver like the 6.5" seas with a matching midbass next to it __________________ Red Spade Audio Blog \| Writer for: Hifi Zine S3 Synergy horn + 18" active woofers + T20 horn sub + B&C active surrounds + Custom Acoustic Treatment

25th October 2004, 10:02 PM	#6
wigginjs diyAudio Member Join Date: Dec 2003 Location: Columbia, SC	I understand the driver positioning isn't optimum. I was hoping to get some comments of enclosure size/tuning frequecy and especially the crossover design. Any ideas or comments regarding those? __________________ The Four Chairs DIY Home Theater

Thread Tools	Search this Thread
Show Printable Version Email this Page	Search this Thread: Advanced Search

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Need center channel help	Ryan_Mc	Multi-Way	0	12th February 2009 03:36 AM
center channel??	wicho	Multi-Way	1	25th October 2008 01:01 AM
Center channel with one mid	Buzzy	Multi-Way	11	17th October 2008 03:52 PM
T-amp for Center Channel?	atleer	Class D	3	6th August 2007 04:56 PM
center channel	sidd_raj2002	Multi-Way	14	4th December 2004 02:41 PM


	Please consider donating to help us continue to serve you. Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving

24th October 2004, 12:35 PM	#3
BillFitzmaurice Banned Join Date: May 2004 Location: New Hampshire	The biggest problem with centers is the usual side by side driver mounting, often required by the space available. Your box would do much better if the midbasses were mounted with their frames touching and the tweeter mounted above instead of in between.

26th October 2004, 01:48 PM	#7
4real diyAudio Member Join Date: May 2004 Location: Arnhem	why not make a 2.5-way design with the same units and configuration. You do not have the problems of a normal horizontal MTM, and still have the looks of a normal center. Also, you don't need to make a baffle step compensation circuit I still prefer the vertical MTM...

New To Site?	Need Help?
Register to Participate Search Privacy Statement Contact Us	Frequently Asked Questions Did you forget your password? Mark Forums Read