TABAQ bookshelf enclosure design - Page 3 - diyAudio
Go Back   Home > Forums > Loudspeakers > Full Range

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 26th May 2010, 03:01 PM   #21
yljhao is offline yljhao  Taiwan
diyAudio Member
 
Join Date: Dec 2009
Yes, interesting design.

I found out something important when I study Martin's worksheet explanation. When you folded the transmission line enclosure it will change cross section area bigger and Line length shorter than origional design. Maybe these two cause affect the bass. So i decide to buy Martin's worksheet to recaculate SPL curve.

Best regards.
  Reply With Quote
Old 26th May 2010, 11:31 PM   #22
diyAudio Member
 
Join Date: Oct 2009
Location: New Zealand
Quote:
Originally Posted by yljhao View Post

......When you folded the transmission line enclosure it will change cross section area bigger and Line length shorter than origional design.....
Thank you, very important information.

( When I experimented with TL 20 years ago I liked the triangular pipes since there is no reflection from the back panel. But now it turns out that folding a pipe will gives other results. )

I'll build the TABAQ as originally designed rather than experimenting and getting a result that is less than optimum. May move the speaker a bit nearer to the top and then hang the pipes upside down against the ceiling.

AM
  Reply With Quote
Old 28th May 2010, 02:14 PM   #23
diyAudio Member
 
Join Date: May 2010
Hi guys! I've been lurking here for quite some time, and would love to get this discussion started again...I am looking to build a low cost desktop/bookshelf speaker, and love the quality and simplicity inherent in the TABAQ theory. Designing a miniature TABAQ is a great idea, if we can effectively mimic the output of the original.
  Reply With Quote
Old 2nd June 2010, 03:21 PM   #24
diyAudio Member
 
Join Date: Mar 2008
I'm guessing since you took the design from the the intended 871S that this variation you have created would also work with the 871S? Thanks for the clarification!
  Reply With Quote
Old 1st July 2010, 05:02 AM   #25
yljhao is offline yljhao  Taiwan
diyAudio Member
 
Join Date: Dec 2009
Default This is not TABAQ

Hi

This is my new design for TB w4-1320 with MJK's worksheet simultation.

SPL
Click the image to open in full size.


Impedence
Click the image to open in full size.


Baffle defraction SPL
Click the image to open in full size.

series paralleled 6.8 ohm resistor and 1.5mH inductor
Click the image to open in full size.

cabinet 2D sketch
Click the image to open in full size.

3D sketch
Click the image to open in full size.

Hope you will like it.
I will upload more information later.
Attached Images
File Type: png screenshot.3.png (5.3 KB, 766 views)
File Type: png screenshot.4.png (8.9 KB, 720 views)
File Type: png screenshot.5.png (5.4 KB, 707 views)
File Type: png screenshot.6.png (5.4 KB, 712 views)
File Type: png tangband w4-1320 TLS.png (148.6 KB, 720 views)
File Type: png tangband w4-1320 TLS 2D Sketch.png (82.8 KB, 778 views)
  Reply With Quote
Old 1st July 2010, 12:24 PM   #26
yljhao is offline yljhao  Taiwan
diyAudio Member
 
Join Date: Dec 2009
Driver T/S parameters
Click the image to open in full size.

Enclosure setting

Click the image to open in full size.

BSD setting for desktop listening.

Click the image to open in full size.
Click the image to open in full size.
Click the image to open in full size.
Click the image to open in full size.

BSC circuit setting

Click the image to open in full size.

I just upload new designs to google 3D warehouse.
3D sketch links.
2D sketch links.
Attached Images
File Type: png 1.PNG (24.9 KB, 754 views)
File Type: png 2.PNG (30.4 KB, 741 views)
File Type: png 3.PNG (30.2 KB, 734 views)
File Type: png 4.PNG (24.2 KB, 730 views)
File Type: png 5.PNG (27.4 KB, 737 views)
File Type: png 6.PNG (21.2 KB, 740 views)
File Type: png 8.PNG (16.4 KB, 729 views)

Last edited by yljhao; 1st July 2010 at 12:27 PM.
  Reply With Quote
Old 3rd July 2010, 09:54 AM   #27
diyAudio Member
 
Join Date: Oct 2009
Location: New Zealand
Thanks for the updated version of the bookshelf system and all the hard work modeling it. Looks very good.

I have received my W4-1320 but have not build the Tabaq because I have just moved to a new house and need to finish that first. Then I need to do some more work on my 6l6GC SE amplifier before I can build the speakers.

How much damping material is being used (I can see where it goes) Am I correct in that polyfill damping material is used but how much in weight?

Many thanks
AM
  Reply With Quote
Old 4th July 2010, 01:37 PM   #28
diyAudio Member
 
Join Date: Dec 2009
Hi yljhao
I'm not so familiar with that MJK simulations, but looking your drawings it looks like MLTL design and you use section TL woorksheet for simulations.
Hope I'm not write, bur let speciallists to advice... (sims lookd prety fine) or may be even Martin could add some more light...
  Reply With Quote
Old 4th July 2010, 02:24 PM   #29
diyAudio Member
 
Scottmoose's Avatar
 
Join Date: Mar 2005
Location: UK
Looks close, but it doesn't matter either way; the TL sections sheet just allows more input flexibility in terms of line geometry.
__________________
Community site www.frugal-horn.com Commercial site www.wodendesign.com
  Reply With Quote
Old 4th July 2010, 04:01 PM   #30
diyAudio Member
 
Join Date: Dec 2009
Quote:
Originally Posted by Scottmoose View Post
Looks close, but it doesn't matter either way; the TL sections sheet just allows more input flexibility in terms of line geometry.
does it mean that in both cases the result/graphs will be the same?
Today I'm figting to understad how to enter rectangular port in MLTL...
  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
Suggestions: Stereo Mid-Bass/Sub enclosure 'stands' for Bookshelf speakers Kilroy Multi-Way 6 11th March 2010 05:05 AM
Small bookshelf design needed x Multi-Way 9 8th May 2007 03:28 AM
Building a full range bookshelf enclosure aussiebuddha Full Range 6 10th August 2006 04:31 AM
Cheap, small bookshelf design... Nm2285 Multi-Way 3 19th July 2005 10:32 AM
2-way large bookshelf design Nm2285 Multi-Way 5 21st September 2004 03:38 AM


New To Site? Need Help?

All times are GMT. The time now is 12:14 PM.


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