Svante's the EDGE - 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 11th January 2007, 07:27 PM   #1
Pano is offline Pano  United States
diyAudio Moderator
 
Pano's Avatar
 
Join Date: Oct 2004
Location: Milliways
Blog Entries: 4
Default Svante's the EDGE

Got a question for Svante about the filter generator in the Edge. I sent you an email a week or 2 ago, but never heard back. We must have missed each other.

Maybe it's better to ask here?
__________________
Take the Speaker Voltage Test!
  Reply With Quote
Old 11th January 2007, 07:32 PM   #2
Vikash is offline Vikash  United Kingdom
diyAudio Moderator Emeritus
 
Vikash's Avatar
 
Join Date: May 2003
Location: UK
don't ask if you can ask, just ask.
__________________
"The human mind is so constituted that it colours with its own previous conceptions any new notion that presents itself for acceptance." - J. Wilhelm. (But I still think mine sounds better than yours.)
  Reply With Quote
Old 12th January 2007, 12:18 AM   #3
Pano is offline Pano  United States
diyAudio Moderator
 
Pano's Avatar
 
Join Date: Oct 2004
Location: Milliways
Blog Entries: 4
Hehehe, OK. Just didn't want to make fool of myself in public.


The Edge software will calculate a passive BSC filter and an active OB low pass shelving filter.
See the active filter below. It's an inverting filter, but the component layout looks more like a non-inverting version to me - but not quite.

Can someone explain?
Attached Images
File Type: gif ob-filter.gif (642 Bytes, 442 views)
__________________
Take the Speaker Voltage Test!
  Reply With Quote
Old 12th January 2007, 12:52 PM   #4
soongsc is offline soongsc  Taiwan
diyAudio Member
 
soongsc's Avatar
 
Join Date: Mar 2005
Location: Taiwan
Quote:
Originally posted by panomaniac
Hehehe, OK. Just didn't want to make fool of myself in public.


The Edge software will calculate a passive BSC filter and an active OB low pass shelving filter.
See the active filter below. It's an inverting filter, but the component layout looks more like a non-inverting version to me - but not quite.

Can someone explain?
R2 and C set the higher turning point frequency, R1 and C sets the lower turning point frequency. it is the inverted configuration.
__________________
Hear the real thing!
  Reply With Quote
Old 12th January 2007, 09:09 PM   #5
Pano is offline Pano  United States
diyAudio Moderator
 
Pano's Avatar
 
Join Date: Oct 2004
Location: Milliways
Blog Entries: 4
OK, makes sense. The more I look at it, the more sense it makes.

I ran a spice simulation of the filter and am having a hard time getting the low end to shelf. It shelves nicely on the top end, but not the bottom . I'll try some different values to see what happens.

Below is the type of LP shelf filter that Linkwitz has on his site. It simulates well.

Comments?
Attached Images
File Type: gif lp-shelf.gif (3.3 KB, 377 views)
__________________
Take the Speaker Voltage Test!
  Reply With Quote
Old 13th January 2007, 10:29 PM   #6
Svante is offline Svante  Sweden
diyAudio Member
 
Svante's Avatar
 
Join Date: Feb 2004
Location: Stockholm
Default Re: Svante's the EDGE

Quote:
Originally posted by panomaniac
Got a question for Svante about the filter generator in the Edge. I sent you an email a week or 2 ago, but never heard back. We must have missed each other.

Maybe it's better to ask here?
Sorry, I must have missed that. The lower panel in the compensation designer is intended for open baffles, and using the suggested values, there will be no shelving towards lower frequencies.

One can, however, click on "suggest f1 & f2!" in the upper panel and copy the suggested values for f1 and f2 to the lower panel, this will result in shelving towards lower frequencies.

You can view the response of the circuit by checking "enable" and look for the blue curve in the response window. You do not need to simulate it separately (but it may of course be educating to do it anyway).

Below is a compensation using f1=205 Hz and f2=410 Hz.

Click the image to open in full size.
__________________
Simulate loudspeakers: Basta!
Simulate the baffle step: The Edge
  Reply With Quote
Old 16th January 2007, 10:22 AM   #7
Pano is offline Pano  United States
diyAudio Moderator
 
Pano's Avatar
 
Join Date: Oct 2004
Location: Milliways
Blog Entries: 4
Thanks Svante! That works. I understand why you didn't do the shelf in OB. Just thought I was missing something.

Will be trying it out here soon. I'll let you know.
__________________
Take the Speaker Voltage Test!
  Reply With Quote
Old 18th January 2007, 11:22 AM   #8
diyAudio Member
 
Join Date: Aug 2006
Hi Svante, are you still here? I'm a 'newbie' and have a few questions please? I've just tried out 'the Edge' - it looks excellent - thank you! I'll try to be brief...

I'm trying to model a (passive) 3way in Speaker Workshop, but I don't have MS Excel to use most of the 'FRConsortium tools'. Could I assume the Edge suggested RL contour network in series with both the mid and woofer xo's would negate the need to use all that FRC stuff? The tweeter xo would connect directly to the source.

Also, is it possible to define the various driver sizes in the same Edge simulation? I hope all this makes sense. many thanks, grant
  Reply With Quote
Old 19th January 2007, 11:52 AM   #9
diyAudio Member
 
Join Date: Aug 2006
Hi Panomaniac!
I hope you didn't mind my post here? I was a windsurfer at Kihei many times. grant
  Reply With Quote
Old 19th January 2007, 05:43 PM   #10
Pano is offline Pano  United States
diyAudio Moderator
 
Pano's Avatar
 
Join Date: Oct 2004
Location: Milliways
Blog Entries: 4
No worries Grant!

And I live across the street from where you went windsurfing.
__________________
Take the Speaker Voltage Test!
  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
Poor verticle directivity response - also pinging Svante HiFiNutNut Multi-Way 9 2nd February 2007 07:34 PM
Svante's Basta! speaker simulator trial sreten Multi-Way 5 31st July 2006 10:53 PM
Help with edge.exe Dave Jones Multi-Way 2 21st May 2004 11:38 PM
Svante, a reverse engineering problem sreten Multi-Way 16 4th April 2004 05:38 PM


New To Site? Need Help?

All times are GMT. The time now is 06:58 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