active crossovers - diyAudio
Go Back   Home > Forums > Loudspeakers > Multi-Way

Multi-Way Conventional loudspeakers with crossovers

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 6th November 2010, 12:19 AM   #1
zimjj is offline zimjj  United States
diyAudio Member
 
Join Date: Oct 2008
Default active crossovers

I know there have been threads on this before, but they are pretty old. Now I've designed the cabinet for a 3-way and would like to use an active crossover and am looking for advice. I'm considering Rane and possibly Behringer so any good or bad experinces with either?

But my biggest problem is inserting a balanced device in the middle of an unbalanced system. I've read at least four different lengthy articles on the topic and one is more depressing than the next. It sounds like a crap shoot, so I would like to hear how other people have handled this.

Thanks for any help you can give me,

JohnZ
  Reply With Quote
Old 6th November 2010, 02:22 AM   #2
diyAudio Member
 
norman bates's Avatar
 
Join Date: Nov 2003
Location: iowa
get an active crossover that has 1/4" jacks.

I've found that the cheap ones (non marchand) sound bad when running with a full range driver (even the lowly pioneer b20). But it is an excellent tool for running 2 or 3 way systems.

I believe this should be moved to multi-way

Norman

Last edited by norman bates; 6th November 2010 at 02:24 AM.
  Reply With Quote
Old 6th November 2010, 02:24 AM   #3
gooki is offline gooki  New Zealand
diyAudio Member
 
Join Date: Dec 2008
minidsp?
  Reply With Quote
Old 6th November 2010, 08:20 AM   #4
diyAudio Member
 
JamesTRexx's Avatar
 
Join Date: Nov 2009
Blog Entries: 1
Default Noisefloor

The only problem I had was when I hooked up regular consumer audio power amplifiers to my DCX. These had no gain controls so I could hear noise from the tweeter if I came close enough to the speaker.
My advice is to use power amps with gain control or sit at least 2-3 metres away from the speakers.
__________________
Source: FreeBSD & XMMS on VIA Eden, Terratec Aureon 5.1 / Yamaha GT-CD1 Processing: DEQ2496, 2x DCX2496 Amps: 4x EP2000, 2x EP4000
The Gate, best speakers in the world? :-)
  Reply With Quote
Old 6th November 2010, 09:20 AM   #5
diyAudio Member
 
Join Date: Jan 2005
Location: France
I am building a non compromise 3 way digital crossover, transparant on single driver units and multiway systems.
Click the image to open in full size.
TOTALDAC board
__________________
Vincent
http://vincent.brient.free.fr/main.htm
  Reply With Quote
Old 6th November 2010, 10:50 AM   #6
diyAudio Member
 
Join Date: Jan 2008
Location: Toronto and Delray Beach, FL
Behringer active crossover is just a delight to have. Incredible flexibility including mixed bass (seems unsound to have two subs below say, 120 Hz, when one good one is better, esp, if placed in a choice corner location).

But you really need to set the controls using instruments to ensure curves and loudnesses match. It has tiny knobs and cheapy pots... that doesn't matter for sound quality, but makes precise alignment impossible by eye.

Set up can be as simple as a free computer o'scope and a Denon test CD... and up.

Now-a-days, passive XOs are complicated and hand-tuned and full of questionable components and when you are done, not adjustable easily. Makes no sense. Go active.

The Behringer digital box seems do-all. But I am skeptical about "black boxes" esp. if digital. DIYers who wouldn't touch a plain capacitor without a pedigree are ga-ga over digital processing.
__________________
Dennesen ESL tweets, Dayton-Wright ESL (110-3200Hz), mixed-bass Klipschorn (28-110), and giant OB using 1960's Stephens woofer (18-110); Behringer DSP. HiFi aspirations since 1956

Last edited by bentoronto; 6th November 2010 at 10:53 AM.
  Reply With Quote
Old 6th November 2010, 06:09 PM   #7
theresa is offline theresa  United States
diyAudio Member
 
Join Date: Aug 2009
Default Behringer not very good

Behringer xovers do not get good reviews about their sound. I went with miniDSPs which are far more flexible since they are setup using a pc. As to sound, I've read that at least one user identified the miniDSP as the best sounding in blind a vs. b testing while I have read nothing to the contrary. To each their own though. Professional equipment often doesn't sound as good as equipment made for consumers. The expectations are different. In tests the miniDSPs had better s/n and thd than the Behringer even though the miniDSP is 48kHz and the Behringer is 96kHz.
  Reply With Quote
Old 6th November 2010, 11:34 PM   #8
diyAudio Member
 
Join Date: Jan 2008
Location: Toronto and Delray Beach, FL
theresa - talking about the CX3400 or the digital processsor?

I tend to be skeptical about differences between modern electronics that have astonishingly low basic test performance. The CX3400 is certainly no examplar of golden-ear components, but seems to be OK in my system.

About XLR plugs, easy to buy cables or to make your own. Lots of "surplus" stores around here with the bits and pieces. No obstacle. If you do want to work with balanced lines, many great advantages but you need to buy some transformers. These are not expensive and are said not to harm signals. You might find some mysterious hums disappearing.
__________________
Dennesen ESL tweets, Dayton-Wright ESL (110-3200Hz), mixed-bass Klipschorn (28-110), and giant OB using 1960's Stephens woofer (18-110); Behringer DSP. HiFi aspirations since 1956
  Reply With Quote
Old 7th November 2010, 12:25 AM   #9
diyAudio Member
 
Join Date: Mar 2005
Location: Phoenix, Arizona USA
I'm another of us who finds professional digital speaker-management systems to be plenty OK. I've been using a dbx DriveRackPA for several years with a big OBLA, and I now use it for the bass sections of my Audio Physic Avanti IIIs and SuperSubs.
Click the image to open in full size.

I'm no GEA, but I find myself eventually annoyed with bad sound. I never found my self annoyed with the sound of the DriveRack. I LOVE its flexibility including level controls, of course, so one doesn't need those on one's amps.

I use it in a single-ended system that includes single-ended-triode poweramps and Audioquest 'triple-balanced' ICs with XLRs on the dbx ends and RCAs on the other ends. Works and sounds just fine.
  Reply With Quote
Old 7th November 2010, 01:58 AM   #10
diyAudio Member
 
Join Date: Mar 2007
Location: California
I have two DCX2496 and have used analog active crossover boards as well. The DCX has everything you need. Don't forget that in addition to the low-pass and high-pass filters, you also will likely need some baffle step compensation, a couple of band pass filter to kill driver resonances or room resonances, etc. All of this is available in the DCX.

The Behringer unit has gotten a lot of negative press about its "high noise" because people try to match it up with consumer gear. The Behringer has pro output levels, which raise the level +14dB (think that is correct) WRT consumer gear. As a previous poster mentioned, having amps with input level controls is key, as it lets you reduce the gain of the amp while increasing the gain of the DCX output stages. This reduces noise output from the speakers to unnoticeable levels.

The MiniDSP is a worthy match for the Behringer, and will come out a bit less expensive. You will need to be able to have a computer to program it, however.

-Charlie
  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
Active Crossovers zenmasterbrian Subwoofers 77 21st September 2006 06:14 PM
active crossovers, please help herbd2 Multi-Way 2 23rd February 2005 04:21 PM
Active Crossovers. hacknet Solid State 3 18th February 2004 12:15 AM
Active crossovers Ilianh Solid State 6 5th November 2002 04:13 AM


New To Site? Need Help?

All times are GMT. The time now is 04:46 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