Help me choose the right driver (4th order bandpass outdoor) - diyAudio
Go Back   Home > Forums > Loudspeakers > Subwoofers
Home Forums Rules Articles diyAudio Store Gallery Wiki Blogs Register Donations FAQ Calendar Search Today's Posts 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
Reply
 
Thread Tools Search this Thread
Old 17th May 2016, 07:06 AM   #1
diyAudio Member
 
Join Date: May 2016
Default Help me choose the right driver (4th order bandpass outdoor)

I would like to build my own garden underground subwoofer in the style of the sononace 12"(LS12ESUB) (4th orde Bandpass).
Subwoofers
I heard it at ISE this year in Amsterdam and I'm impressed!
I have no idea what sub i should use? A car subwoofer or is a marine sub a must?
In my days the brands where Rockford fosgate, JBL, Cerwin Vega, and many more.
What would advice me:
- 12" or 15"?
- What brand/model to fit the use?
- I don't think i have to go very low infrequency maybe 40-45hz?

I will take my existing Rotel wich gives 2x 60w RMS for the satellites and 2 x 150wRMS@8ohms for the sub so DVC is a must.

Thank you
Click the image to open in full size.

Last edited by jazbo8; 19th May 2016 at 09:58 AM. Reason: typo
  Reply With Quote
Old 17th May 2016, 09:18 AM   #2
diyAudio Member
 
JonSnell Electronic's Avatar
 
Join Date: Dec 2012
Location: The Jurassic Coast, England. GB
Send a message via Skype™ to JonSnell Electronic
Is it a Volvo-Penta air inlet filter?
__________________
Support for Flying Mole Class D, PMC DS-001 (Hypex),Valve Equipment and designs both new and old. www.jonsnell.co.uk
  Reply With Quote
Old 17th May 2016, 12:09 PM   #3
TBTL is offline TBTL  Germany
diyAudio Member
 
Join Date: Oct 2013
Do you have neighbours?
  Reply With Quote
Old 17th May 2016, 03:28 PM   #4
diyAudio Member
 
Join Date: May 2016
never looked a it that way ;-)
  Reply With Quote
Old 17th May 2016, 03:31 PM   #5
diyAudio Member
 
Join Date: May 2016
I do but they are fare enough!
here is a section of the sub.
Click the image to open in full size.
  Reply With Quote
Old 17th May 2016, 08:14 PM   #6
Ron E is offline Ron E  United States
diyAudio Member
 
Ron E's Avatar
 
Join Date: Jun 2002
Location: USA, MN
How big is your garden
what is the furthest place you will listen
what SPL requirements
what are the high frequency speakers?

Designing one of these is nothing terribly hard, you just size the tube for your volume requirements and you make the port large enough in diameter so it sticks out of the ground somewhat. Getting it sealed properly against the elements will be a challenge. You will need some sort of screen on the canopy to keep rodents/insects out.

help for designing bandpass can be found at The Subwoofer DIY Page
__________________
Our species needs, and deserves, a citizenry with minds wide awake and a basic understanding of how the world works. --Carl Sagan
Armaments, universal debt, and planned obsolescence--those are the three pillars of Western prosperity. Aldous Huxley
  Reply With Quote
Old 18th May 2016, 12:09 AM   #7
diyAudio Member
 
Join Date: Nov 2007
Quote:
Originally Posted by Ron E View Post
How big is your garden
what is the furthest place you will listen
what SPL requirements
what are the high frequency speakers?

Designing one of these is nothing terribly hard, you just size the tube for your volume requirements and you make the port large enough in diameter so it sticks out of the ground somewhat. Getting it sealed properly against the elements will be a challenge. You will need some sort of screen on the canopy to keep rodents/insects out.

help for designing bandpass can be found at The Subwoofer DIY Page

With that big a tube compared to the front cavity, it's probably best sim'd in HornResp.

The wire mesh to keep out insects should be located as close to the external end of the tube as possible.

It's an interesting idea for an outdoors underground subwoofer. I like it.
__________________
www.diysubwoofers.org
  Reply With Quote
Old 18th May 2016, 06:53 AM   #8
diyAudio Member
 
Join Date: May 2016
Hi,

Thank you for the answers,
I'm not affraid of the build, i'm just not sure about the driver and box design/size
Here is a little drawing of the garden.
The purpose is to play music only (mostly pop, R&B, reggae, lounge)

The max distance is about 10m
max SPL: no idea how to Judge on that.
the high frequency speakers are sonance satelites 8 pieces (specs attached),
Click the image to open in full size.

Click the image to open in full size.

Click the image to open in full size.
  Reply With Quote
Old 18th May 2016, 06:54 AM   #9
diyAudio Member
 
Join Date: May 2016
Quote:
Originally Posted by Brian Steele View Post
With that big a tube compared to the front cavity, it's probably best sim'd in HornResp.

The wire mesh to keep out insects should be located as close to the external end of the tube as possible.

It's an interesting idea for an outdoors underground subwoofer. I like it.
it's indeed a big tube, could it be to limit the air velocity (port noise)?
  Reply With Quote
Old 19th May 2016, 09:56 AM   #10
diyAudio Member
 
Join Date: May 2016
JL audio.
I have build one
  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
4th Order Bandpass Driver Selection lamsv Subwoofers 15 30th December 2014 11:09 AM
Can you use 2x 4th order BP boxes to imitate a 6th order BP ? RobWells Subwoofers 26 9th March 2012 09:33 PM
10" Driver in the 4th order nonsuchpro Multi-Way 32 19th December 2011 03:03 AM
1st order to 4th order conversion Professor smith Multi-Way 22 28th November 2011 11:41 AM
My 1st order butterworth filter better than 4th order L-R: Why? philipreji Solid State 61 1st March 2007 05:50 PM


New To Site? Need Help?

All times are GMT. The time now is 11:14 PM.


vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2016 DragonByte Technologies Ltd.
Copyright 1999-2016 diyAudio

Content Relevant URLs by vBSEO 3.3.2
Wiki