Go Back   Home > Forums > Loudspeakers > Full Range

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
Reply
 
Thread Tools Search this Thread
Old 21st August 2005, 03:59 PM   #1
MCH is offline MCH
diyAudio Member
 
Join Date: Mar 2002
Default CSS FR125S for center channel ?

I built a pair of these in the Onken cab (designed by Dave). I've listened to them for a couple of days so far. I'm trying to compare them to my ARdiy's. So far I can't hear anything that really jumps out at me. The only thing that I think is a little different is less sibilance in some female vocals. I'll listen to them for a couple of weeks and then switch back to my ARdiy's. Usually I find this is when the ear notices the difference the most. I find I definitely need my subwoofer to augment the bass. Without the subwoofer the sound is just too flat for my taste.

On to my question. If I build a center channel and utilize say 3 speakers to get a final 8ohm configuration; do I connect it as a pair of parrallels connected to one in series? If so, is the one that is connected in series to the parrallel pair, connected to the positive terminal of one speaker and the negative terminal of the other (in the parallel pair)?

After listening to them, I'll finish them (paint) and post a pic.
  Reply With Quote
Old 21st August 2005, 04:29 PM   #2
diyAudio Moderator Emeritus
 
Bas Horneman's Avatar
 
Join Date: Apr 2002
Location: The Netherlands
Blog Entries: 18
Can't wait to get mine! What amps are you driving them with, if I may ask?

Regards,
Bas
  Reply With Quote
Old 21st August 2005, 04:50 PM   #3
MCH is offline MCH
diyAudio Member
 
Join Date: Mar 2002
I'm using a Panasonic SA-XR50 digital receiver. I like this receiver a lot. Great for digital listening! The analog out (for SACD) though, is not that good.
  Reply With Quote
Old 21st August 2005, 04:53 PM   #4
diyAudio Member
 
Join Date: Oct 2004
Default Re: CSS FR125S for center channel ?

Quote:
Originally posted by MCH
I find I definitely need my subwoofer to augment the bass. Without the subwoofer the sound is just too flat for my taste.
How did you place the speakers? If they're far away from walls, you could try a simple BSC-circuit.
  Reply With Quote
Old 21st August 2005, 06:44 PM   #5
morbo is offline morbo  Canada
diyAudio Member
 
Join Date: Sep 2004
Location: Guelph, Ontario
Why would you use 3 of them for a center channel? I use 1 WR125 and it works just fine, its crossed at 100hz using the receiver's bass management. I find it anchors voices etc to the center of the screen very well, much better than the sideways MTM centers I've heard before.
  Reply With Quote
Old 22nd August 2005, 03:01 AM   #6
MCH is offline MCH
diyAudio Member
 
Join Date: Mar 2002
"Why would you use 3 of them for a center channel? "

Good question. I suppose I'm use to center channels in the MTM configuration, I find it difficult to envision 1 speaker for that function. It certainly is more econmical with 1 speaker. I like the look of the 3 configuration. Is this a bad idea for sound? I see lots of line arrays (vertical) that seem to be well thought of. But as for the wiring aspect, is my line of thinking correct?

"How did you place the speakers?"

I have the speakers about 3+ feet from rear and side walls. I'm not saying that there is no bass, just prefer more bass than what is put out by these speakers. Plus I think they would be more efficient (the mid frequencies would be better served) if the lower frequencies were removed from their workload. Personally I feel that most (if not all) systems could utilize a good subwoofer. A subwoofer indepentently is much more versatile, efficient and controllable to suit individual setups. But that is just my personal preferences.
  Reply With Quote
Old 22nd August 2005, 07:39 AM   #7
diyAudio Member
 
Join Date: Mar 2005
Location: Hergiswil, Switzerland
I concur with MCH. A subwoofer has more than just one benefit. I built a sealed sub with an active Linkwitz/Riley crossover @ 85 Hz to make up for the lack of low end of my Tannoy Reveal monitors. I plugged the ports of the Tannoys and let me tell you: This is the way to go. I invited a friend over to my house who has a lot of experience with professional recording and found my system to be up to par with the multi-thousand dollar system in his pro studio in terms of sound quality. To sum up the benefits of a sub:

- extended bass
- bass reflex can be avoided
- less movement of the cones of the main speakers, thus better resolution
- room gain can easily be compensated for (provided you can adjust the volume of your amplifiers separately)

By the way, I built a sub amp basend on the LM3886 which I highly recommend for bass if you don't need a lot of power.
  Reply With Quote
Old 22nd August 2005, 10:17 AM   #8
diyAudio Member
 
Join Date: Oct 2004
Quote:
Originally posted by MCH
"Why would you use 3 of them for a center channel? "

Good question. I suppose I'm use to center channels in the MTM configuration, I find it difficult to envision 1 speaker for that function. It certainly is more econmical with 1 speaker. I like the look of the 3 configuration. Is this a bad idea for sound? I see lots of line arrays (vertical) that seem to be well thought of. But as for the wiring aspect, is my line of thinking correct?
I've always hated the horizontal MTMs. The combfilter effect is very annoying when you move away form the centerline, and I really cant see any benefits in using that config.

If you MUST have an MTM, then I recommend you cut all but the lowest frequencies from the two side drivers and let the center one take care of the mids and highs. You could put the center one in a small closed 3 litre chamber and the two side drivers in a ~10 litre 50Hz reflex with 2nd order lowpass at 100Hz. Or something similar. This way you would actually benefit from the extra drivers.
  Reply With Quote
Old 22nd August 2005, 03:45 PM   #9
morbo is offline morbo  Canada
diyAudio Member
 
Join Date: Sep 2004
Location: Guelph, Ontario
I don't think a horizontal array works the same way as a vertical array at all, and an array of 4.5" drivers running fullrange will run into combing problems. If anything, do what was suggested above and use 2 wr and 1 fr, rolling off the wrs to match baffle step. Really though this compromises the whole idea of a fullrange driver with no crossover to get in the way. I think that with a typical 100hz home theater receiver highpass, and a ported box tuned slightly below the HP frequency, you would have plenty of output from one driver, with much better coherency. Unless of course you have a huge room or listen at extremely loud levels.
  Reply With Quote
Old 22nd August 2005, 04:13 PM   #10
diyAudio Member
 
Join Date: Oct 2004
Quote:
Originally posted by morbo
If anything, do what was suggested above and use 2 wr and 1 fr, rolling off the wrs to match baffle step. Really though this compromises the whole idea of a fullrange driver with no crossover to get in the way.
The FR doesn't need any x-over in a small closed box. Only the the two WRs should have something to cut the higher frequencies.

Quote:
Originally posted by morbo
I think that with a typical 100hz home theater receiver highpass, and a ported box tuned slightly below the HP frequency, you would have plenty of output from one driver, with much better coherency. Unless of course you have a huge room or listen at extremely loud levels.
I agree. And if you need more power than one FR can give, you should look at real bass drivers to go with it. One FR with x amount of Extremis 6.8 would be one solution for loud listening levels.
  Reply With Quote

Reply


Hide this!Advertise here!
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
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
Center channel 66Panel Multi-Way 0 25th August 2008 03:48 AM
T-amp for Center Channel? atleer Class D 3 6th August 2007 04:56 PM
DIY Center Channel DKAudio Multi-Way 9 2nd June 2006 09:46 PM


New To Site? Need Help?

All times are GMT. The time now is 01:59 AM.


vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2014 DragonByte Technologies Ltd.
Copyright 1999-2014 diyAudio

Content Relevant URLs by vBSEO 3.3.2