Line Source Dipole Subwoofer

dkxdn · 02:58 PM

Hi

For 2 month ago I received my beloved Magnepan 1.7 but from the start they needed some assistant in the lower part.

Then I designed a line source dipole subwoofer:
4 x Peerless SLS 400 – 830867 pr side. And I used the sidewalls for the outside baffle – see picture:

To get the same finish as the Magnepan 1.7 I orderd two “Socks” directly from Magnepan – great service and in a week I receive them here in Denmark !

More pictures:

CharlieM · 8th July 2011, 05:17 PM

I really like that woofer setup and it looks great too!
How are you liking it's sound?

geraldfryjr · 8th July 2011, 05:33 PM

I like this concept very much!
I too had been think about some thing similar, latey I have been playing with woofers firing into the corners of the room.
Please elaborate some more If you would!

jer

dkxdn · 07:52 PM

Most importend to integreat a subwoofer to the Magnepan 1.7 is to have the same Sound direction: Linesource and Dipole - with out these two they Will never play together -thats my meaning !
Later this weekend I'll publish some messurement

geraldfryjr · 8th July 2011, 07:50 PM

This is an idea that might work for me as my room is only 10.5 feet wide and 18.5 feet long.

I will be looking foward to your next report!

jer

dkxdn · 12:52 PM

And here comes the measurements of the subwoofer alone:
All measurements are made from my listen place with a window on 60msec and smoothing = 1/N=5

A: Blue Left, B: Red Right without crossover & eq

A: Blue Left without crossover+eq, B: Red with crossover: 75 hz-48db/octave + par eq at 20hz, 80hz & 165hz and hishelf from 90hz - yes many function on my Lyngdorf

Difference on left and right

a.wayne · 18th July 2011, 12:22 AM

Hello ,

Nice work , i love the look and being that close to the side walls will help the bass , but i cannot see it not affecting the sound of the 1.7's ....

why not seperate them ......

dkxdn · 18th July 2011, 12:50 PM

Space neded ! If I had another room = Wider then ...
But I will try to put the Maggie with the tweeter outside and about 10cm from the subwoofer.

petegt · 28th July 2011, 03:42 PM

Sorry I may be missing something here but what is the point in this?

Considering that the bass coming from your subwoofers is omnidirectional (Definitly true for 80hz down but the effect starts at arround 150hz)

The only directional tone you will be able to hear from them is the harmonic distortion.

CLS · 29th July 2011, 05:21 AM

It's dipole, not monople or omni.

Have you ever heard dipole bass?

8th July 2011, 02:54 PM	#1
dkxdn diyAudio Member Join Date: Nov 2002 Location: Denmark	Line Source Dipole Subwoofer Hi For 2 month ago I received my beloved Magnepan 1.7 but from the start they needed some assistant in the lower part. Then I designed a line source dipole subwoofer: 4 x Peerless SLS 400 – 830867 pr side. And I used the sidewalls for the outside baffle – see picture: To get the same finish as the Magnepan 1.7 I orderd two “Socks” directly from Magnepan – great service and in a week I receive them here in Denmark ! More pictures: Last edited by dkxdn; 8th July 2011 at 02:58 PM.

8th July 2011, 05:17 PM	#2
CharlieM diyAudio Member Join Date: Feb 2008 Location: Savannah, GA	I really like that woofer setup and it looks great too! How are you liking it's sound? __________________ http://jazzman-esl-page.blogspot.com/

8th July 2011, 07:25 PM	#4
dkxdn diyAudio Member Join Date: Nov 2002 Location: Denmark	Most importend to integreat a subwoofer to the Magnepan 1.7 is to have the same Sound direction: Linesource and Dipole - with out these two they Will never play together -thats my meaning ! Later this weekend I'll publish some messurement Last edited by dkxdn; 8th July 2011 at 07:52 PM.

17th July 2011, 12:46 PM	#6
dkxdn diyAudio Member Join Date: Nov 2002 Location: Denmark	And here comes the measurements of the subwoofer alone: All measurements are made from my listen place with a window on 60msec and smoothing = 1/N=5 A: Blue Left, B: Red Right without crossover & eq A: Blue Left without crossover+eq, B: Red with crossover: 75 hz-48db/octave + par eq at 20hz, 80hz & 165hz and hishelf from 90hz - yes many function on my Lyngdorf Difference on left and right Last edited by dkxdn; 17th July 2011 at 12:52 PM.

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


	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

8th July 2011, 05:33 PM	#3
geraldfryjr diyAudio Member Join Date: Feb 2008 Location: Jackson,michigan	I like this concept very much! I too had been think about some thing similar, latey I have been playing with woofers firing into the corners of the room. Please elaborate some more If you would! jer

8th July 2011, 07:50 PM	#5
geraldfryjr diyAudio Member Join Date: Feb 2008 Location: Jackson,michigan	This is an idea that might work for me as my room is only 10.5 feet wide and 18.5 feet long. I will be looking foward to your next report! jer

18th July 2011, 12:22 AM	#7
a.wayne diyAudio Member Join Date: May 2008 Location: Front Row Center	Hello , Nice work , i love the look and being that close to the side walls will help the bass , but i cannot see it not affecting the sound of the 1.7's .... why not seperate them ......

18th July 2011, 12:50 PM	#8
dkxdn diyAudio Member Join Date: Nov 2002 Location: Denmark	Space neded ! If I had another room = Wider then ... But I will try to put the Maggie with the tweeter outside and about 10cm from the subwoofer.

28th July 2011, 03:42 PM	#9
petegt diyAudio Member Join Date: Jul 2011	Sorry I may be missing something here but what is the point in this? Considering that the bass coming from your subwoofers is omnidirectional (Definitly true for 80hz down but the effect starts at arround 150hz) The only directional tone you will be able to hear from them is the harmonic distortion.

29th July 2011, 05:21 AM	#10
CLS diyAudio Member Join Date: Jun 2005 Location: Taiwan	It's dipole, not monople or omni. Have you ever heard dipole bass?

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Tapered dipole line source array	slomatt	Full Range	0	9th February 2010 07:00 AM
Dipole subwoofer	diy	Subwoofers	1	5th June 2004 02:30 PM
Ultimate Line Source Dipole Speakers	m.parigi	Multi-Way	2	21st November 2003 06:54 PM

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