TL direct on wall

Skorpio · 26th December 2004, 12:18 PM

I am building af flat TL-speaker for direct mounting on the vall.

Dimentions; Width=55mm, Height=120mm, debht=10mm.

Start area around 300cm2 and end area around 200cm2. Bass unit (Vifa M21MO-39-08) has area 235cm2 and Fres´= 28Hz. Lenght of tunnel is around 235cm.

For stuffing I will use pure wool.

I think i will need lean bass for wall mounting, is a liniar tunnel better than a tapered?

Comments on the design?

navin · 26th December 2004, 06:58 PM

your driver has a dia of 20cm. 200mm. i wonder how it owuld fit on a box where no dimesion is 200mm (55mmx10mmx120mm). am i missing something.

Skorpio · 26th December 2004, 07:15 PM

sorry, all dimentions are in cm!

Volenti · 27th December 2004, 10:12 AM

Tapered is still superior, especially if the bass driver extends up the range a bit. (less ripple in the response)

Use the stuffing to tune the line, think of the stuffing as resonance control, if the line sounds too "fat" pack more stuffing in the line, if it sounds too "thin" remove some.

Skorpio · 27th December 2004, 10:21 AM

Thank you...

Do I need any attention regarding the backwall behind the woofer. There is only 10cm from the unit to the backwall....

Volenti · 27th December 2004, 11:57 AM

Use a layer of thick foam directly behind the driver, that should handle most reflection issues, for a mid bass driver a shallow depth is actually good since it pushes potential standing wave issues out of the pass band.

26th December 2004, 12:18 PM	#1
Skorpio diyAudio Member Join Date: Mar 2004 Location: Denmark	TL direct on wall I am building af flat TL-speaker for direct mounting on the vall. Dimentions; Width=55mm, Height=120mm, debht=10mm. Start area around 300cm2 and end area around 200cm2. Bass unit (Vifa M21MO-39-08) has area 235cm2 and Fres´= 28Hz. Lenght of tunnel is around 235cm. For stuffing I will use pure wool. I think i will need lean bass for wall mounting, is a liniar tunnel better than a tapered? Comments on the design?

26th December 2004, 06:58 PM	#2
navin diyAudio Member Join Date: Jan 2002 Location: Mumbai (Bombay), India	your driver has a dia of 20cm. 200mm. i wonder how it owuld fit on a box where no dimesion is 200mm (55mmx10mmx120mm). am i missing something. __________________ ...still looking for the holy grail.

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

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Designing for on-wall/near-wall speaker placement	morbo	Multi-Way	4	27th November 2010 04:52 PM
Direct (or almost direct) replacement for Morel MW144?	mr_push_pull	Multi-Way	1	19th April 2009 04:43 PM
in-wall/on-wall speaker? (axiom w-22 clone?)	Scott_fx	Multi-Way	0	22nd February 2007 02:08 AM
In-wall vs bookshelf spk flush with wall	darascott	Multi-Way	3	1st October 2005 03:16 PM
Opinions on wall to wall subwoofer array	jmiyake	Subwoofers	35	19th July 2003 11:26 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


	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

26th December 2004, 07:15 PM	#3
Skorpio diyAudio Member Join Date: Mar 2004 Location: Denmark	sorry, all dimentions are in cm!

27th December 2004, 10:12 AM	#4
Volenti diyAudio Member Join Date: Aug 2003 Location: Australia	Tapered is still superior, especially if the bass driver extends up the range a bit. (less ripple in the response) Use the stuffing to tune the line, think of the stuffing as resonance control, if the line sounds too "fat" pack more stuffing in the line, if it sounds too "thin" remove some.

27th December 2004, 10:21 AM	#5
Skorpio diyAudio Member Join Date: Mar 2004 Location: Denmark	Thank you... Do I need any attention regarding the backwall behind the woofer. There is only 10cm from the unit to the backwall....

27th December 2004, 11:57 AM	#6
Volenti diyAudio Member Join Date: Aug 2003 Location: Australia	Use a layer of thick foam directly behind the driver, that should handle most reflection issues, for a mid bass driver a shallow depth is actually good since it pushes potential standing wave issues out of the pass band.

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