atlas 15 dimensions - 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 9th May 2005, 11:20 PM   #1
diyAudio Member
 
Join Date: May 2005
Location: Atlanta
Default atlas 15 dimensions

So as this being my first DIY project I really need some input because I am not completely sure of what I am doing. I bought a AA atlas 15" for HT use and I am now trying to build a ported box so it can hopefully get in the 18-20hz area. I will b using the 272 watt parts express plate amp unless someone else has other recommendations. I will also be using to 4" flared ports but I am not too sure about how long they should be. I have been using winISD some but it is confusing sometimes. (for example when it asks how many liters the box is or needs to be how do I decide?). Anyway with this info I hope someone can help me with a configuration of some sort.
  Reply With Quote
Old 10th May 2005, 12:17 AM   #2
DougL is offline DougL  United States
diyAudio Member
 
Join Date: Feb 2004
Location: Wheaton IL.
Blog Entries: 30
This page will get you in the area for Box volume

AA Atlis 15 Ported Allignments

HTH

Doug
  Reply With Quote
Old 10th May 2005, 04:00 AM   #3
Tweeker is offline Tweeker  United States
diyAudio Member
 
Join Date: Dec 2004
Location: Cincinnati, Ohio
I suggest using a Rythmik Audio plate amp instead of the Parts Express one. Port length depends on box volume.
  Reply With Quote
Old 10th May 2005, 06:31 AM   #4
diyAudio Member
 
Join Date: May 2005
Location: Atlanta
yes but don't ports take away from the volume which means your box should be bigger? Or do you think those take estimates take into account port length? Also I don't know what port lengths should be.
  Reply With Quote
Old 10th May 2005, 06:48 AM   #5
simon5 is offline simon5  Canada
diyAudio Member
 
Join Date: Nov 2004
Location: Québec, Québec
Yes ports take away volume that you need to take into account. Usually it's not going to change your plan much.

Port length will depend on the internal volume you're aiming for. A bigger box will need a shorter port to achieve the same tuning.

Quote:
I have been using winISD some but it is confusing sometimes. (for example when it asks how many liters the box is or needs to be how do I decide?).
Usually you aim to have a flat frequency response curve, you can allow a shallow rolloff as the frequency decrease because the room gain will compensate for this.

If you look at the red curve on this graph, you'll see that they allow a shallow rolloff to take into account the room gain :

http://www.ascendantaudio.com/archiv...0Q%20graph.htm

Forget anything above 100 Hz because you're building a subwoofer.

The volume of the box will also be limited by how big of a box you can tolerate hehe!
__________________
DIYaudio for President !
  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
What should I do with an AA atlas 15? eisenhower Subwoofers 0 7th January 2007 03:37 AM
Atlas 15 Tweeker Swap Meet 3 8th December 2005 04:08 PM
Anyone measure the Atlas 12 yet johnmark Subwoofers 28 30th June 2005 10:47 PM
amp for atlas 12's danvan Car Audio 0 5th May 2005 04:36 PM
My opinion of my atlas 15 xstephanx Subwoofers 15 22nd February 2005 09:25 PM


New To Site? Need Help?

All times are GMT. The time now is 05:12 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