6th order bandpass design for pro audio use - diyAudio
Go Back   Home > Forums > Loudspeakers > Subwoofers

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 29th July 2010, 02:45 PM   #1
diyAudio Member
 
Join Date: Nov 2007
Default 6th order bandpass design for pro audio use

Hi Everyone:

Looking for examples of successful 6th order bandpass systems (commercial or DIY) for commercial use.

TIA,
  Reply With Quote
Old 29th July 2010, 04:02 PM   #2
Xoc1 is offline Xoc1  United Kingdom
diyAudio Member
 
Xoc1's Avatar
 
Join Date: Nov 2008
Location: Devon UK
There are 3 proven designs for bandpass enclosures on the Speakerplans Website

Speakerplans.com

The plans state that they can be licenced for commercial use
__________________
My daughters music
http://soundcloud.com/zoey-phillips
  Reply With Quote
Old 29th July 2010, 05:36 PM   #3
diyAudio Member
 
Join Date: Nov 2007
Quote:
Originally Posted by Xoc1 View Post
There are 3 proven designs for bandpass enclosures on the Speakerplans Website

Speakerplans.com

The plans state that they can be licenced for commercial use

Thanks! I've been running through numerous possible TH alignments for a 12" driver I recently purchased, and it looks like I might get results more to my liking (size vs. performance) if I go with a "simple" 6th order BP alignment instead . I'm looking for some layout ideas to accomodate the alignment I've come up with - those links should come in handy.
  Reply With Quote
Old 30th July 2010, 04:59 AM   #4
diyAudio Member
 
Join Date: Nov 2007
Kind of a tight fit, but theoretically 0,-3dB from 50 Hz to 150 Hz, 98dB SPL, and a box under 4 cu.ft.... tempting! I might build both this and the larger TH to see which one sounds better...
Attached Images
File Type: jpg Dayton PA310-8 BP1.jpg (108.6 KB, 518 views)
File Type: jpg Dayton PA310-8 BP2.jpg (41.6 KB, 504 views)
File Type: jpg Dayton PA310-8 BP3.jpg (39.7 KB, 493 views)
File Type: jpg Dayton PA310-8 BP4.jpg (33.6 KB, 489 views)
File Type: jpg Dayton PA310-8 BP5.jpg (57.9 KB, 492 views)
  Reply With Quote
Old 23rd August 2010, 01:06 AM   #5
tinitus is offline tinitus  Europe
diyAudio Moderator R.I.P.
 
Join Date: Nov 2005
Hey, anyone tried to do "upper" port slotted a bit like this ?

My goal is bass guitar, and may just be 4.order
Attached Images
File Type: jpg bassguitar 4.order bandpass.JPG (23.5 KB, 131 views)
__________________
sometimes we know very little, and sometimes we know too much
  Reply With Quote
Old 23rd August 2010, 01:35 AM   #6
diyAudio Member
 
Join Date: Nov 2007
Location: Dallas
You can't play bass with just a bandpass sub.
Talking two boxen here and a crossover. N'less
yer higher tuned port hole, or slot is centrally
located and phased to double as the indirect
radiator for midbass.

Karlson K15 is the enclosure you want...

Trace Elliot BX-80 was also slotted indirect
radiator similar to drawing post above...

Last edited by kenpeter; 23rd August 2010 at 01:40 AM.
  Reply With Quote
Old 23rd August 2010, 02:25 AM   #7
tinitus is offline tinitus  Europe
diyAudio Moderator R.I.P.
 
Join Date: Nov 2005
Quote:
Originally Posted by kenpeter View Post
You can't play bass with just a bandpass sub.
ofcourse not

while you posted I drew another one, implementing the front driver


personally I think its a daft idea

anyway, the idea was to use a smaller woofer, and still get SPL, and control

and front driver not playing low bass could be chosen for much better upper range, and thus have strong motor with very low Qts

Im not sure it needs much xo, if any at all ?

Hey, maybe a 12" coax as front driver
Theres a new Beyma with 2" tweeter
Seems like a tough driver with good xmax, and low Qts
http://www.beyma.de/fileadmin/seiten...l/12XA30Nd.pdf

That way this design might be used for just about anything
Attached Images
File Type: jpg bassguitar 4.order bandpass rev.JPG (27.7 KB, 98 views)
__________________
sometimes we know very little, and sometimes we know too much
  Reply With Quote
Old 24th August 2010, 01:19 PM   #8
freddi is offline freddi  United States
diyAudio Member
 
freddi's Avatar
 
Join Date: Aug 2005
not sure if thsi was commercial, and don't like to view Karlson as "bandpass", but for two drivers one could try Humphrey's isobaric Karlson-coupler (with no reference to Karlson) - it could be a vented variant - not sure what to do with "wasted" space - maybe just a central leg for support - a regular Karlson would be good in mid and high quality

Speaker system which inverts and ... - Google Patent Search

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

Last edited by freddi; 24th August 2010 at 01:23 PM.
  Reply With Quote
Old 24th August 2010, 04:27 PM   #9
tinitus is offline tinitus  Europe
diyAudio Moderator R.I.P.
 
Join Date: Nov 2005
clever guys, those old pioneers of audio

anyway, next devellopment

Eminence Delta pro-12A, and Kappa pro-12A
Delta in top "waveguide", and Kappa in bottom 6.order bandpass

Delta in small closed box rolls off around 105hz(-3db)
Kappa, around 40-100hz bandpass
It will do 115db with 120 watt

Could look like "over-ingeneering"
but woofers are "affordable"
Its just more work
Attached Images
File Type: jpg bassguitar 6.order bandpass rev.JPG (53.8 KB, 74 views)
__________________
sometimes we know very little, and sometimes we know too much
  Reply With Quote
Old 29th October 2013, 06:18 PM   #10
diyAudio Member
 
chris661's Avatar
 
Join Date: Feb 2008
Location: Sheffield
Blog Entries: 8
Quote:
Originally Posted by Brian Steele View Post
Hi Everyone:

Looking for examples of successful 6th order bandpass systems (commercial or DIY) for commercial use.

TIA,
Tannoy T40 is rather good, though I managed to kill mine via excessive compression and a slightly over-powered amp.
  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
WinISD pro to simulate 6th order bandpass subwoofer christophorus Subwoofers 14 13th September 2006 12:58 PM
6th order bandpass design - TheWacoKid Subwoofers 5 2nd August 2006 03:02 PM
A question about 6th order bandpass design simon5 Subwoofers 5 5th December 2004 09:29 PM
6th-order Bandpass BAM Subwoofers 1 24th September 2001 05:51 PM
6th order bandpass design? SubNut Subwoofers 3 22nd September 2001 08:48 PM


New To Site? Need Help?

All times are GMT. The time now is 01:43 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