Slightly different crossover configuration affects the result,why? - diyAudio
Go Back   Home > Forums > Loudspeakers > Multi-Way
Home Forums Rules Articles diyAudio Store Gallery Wiki Blogs Register Donations FAQ Calendar Search Today's Posts Mark Forums Read

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
Thread Tools Search this Thread
Old 4th December 2009, 03:42 PM   #1
diyAudio Member
Join Date: Aug 2004
Location: Uppsala,Sweden
Default Slightly different crossover configuration affects the result,why?

According to a recent review of the Audio Physic Cardeas in the German magazine Stereoplay (Stereoplay 12/2009), a slightly altered configuration of the crossover typology makes audible differences to the sounding result.

Here is the "new typology".

- C1 __________\__/__________ C2 + where C1 & C 2 have the

same capacitance and in addition they have the double value compared
to a single cap approach-

- L1 ___________\__/__________ L2 + were L1 & L2 have half the inductance of a single inductor.

\__/ are drivers

The magazine was offered two pairs of compact speakers from Audio Physics with and without the "new" configuration and they claim a significant difference in the sound quality. Most noticeable is a more stable imaging in the "new" one. Is there any explanation or is it possible "fake"?
Without wonderment,no life.
  Reply With Quote
Old 4th December 2009, 03:48 PM   #2
diyAudio Moderator Emeritus
Iain McNeill's Avatar
Join Date: Oct 2007
Location: Santa Cruz, California
So they split a single L/C in one arm of the driver to a pair of L/C's balanced in both arms of the driver circuit Keeping the total value of L and C the same?

For one, the effective series resistance (ESR) could be different which, if significant enough, could make a small sound difference. But it seems like a way to justify more price to me.
  Reply With Quote
Old 4th December 2009, 08:23 PM   #3
diyAudio Member
Join Date: Aug 2004
Location: Uppsala,Sweden
Yes, your interpretation is right. It´s rather easy for us DIY´s to check out if we can hear a difference by doing in the way described. But I have not tried it yet.
Without wonderment,no life.
  Reply With Quote
Old 4th December 2009, 09:21 PM   #4
rcw is offline rcw  Australia
diyAudio Member
Join Date: Jul 2005
Location: sydney nsw
It is a relief to find that that type of nonsense is not just restricted to the audio publications in the English speaking world, the Germans also have snake oil pervayer's, who would have thought?
  Reply With Quote
Old 5th December 2009, 01:30 AM   #5
diyAudio Member
pheonix358's Avatar
Join Date: Jul 2008
Location: Stockport South Australia
I find it interesting. I will have to give it some thought. Differences in back EMF come to mind. Thinking time is required. ZZZZZZZZZZZen
What we don't understand is called magic.
  Reply With Quote
Old 5th December 2009, 03:55 AM   #6
diyAudio Member
Join Date: Nov 2005
Location: NorCal
I've seen the split capacitor configuration with the addition of a battery to bias the junction of the two caps away from zero. JBL has used that in some of their top-end rigs. Probably of most benefit for large values where two big NPE's are much cheaper than one film cap half the size.
Insert witty signature line here.
  Reply With Quote


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
Grid 2 voltage affects optimationman Tubes / Valves 8 26th November 2009 08:26 AM
Affects of mixed driver impedance retroman Multi-Way 1 30th June 2009 07:58 PM
Opamp affects digital out ?? wongmb Digital Source 2 17th November 2005 12:41 PM
Impedence and Crossover affects squidbait Multi-Way 10 2nd April 2004 05:17 PM
Tubed-out guitar affects guitargully Instruments and Amps 3 7th March 2004 07:09 PM

New To Site? Need Help?

All times are GMT. The time now is 11:54 PM.

vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.
Copyright 1999-2017 diyAudio

Content Relevant URLs by vBSEO 3.3.2