Advice on a 15"+ sealed subwoofer design - 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 21st April 2006, 11:14 PM   #1
gwgjr31 is offline gwgjr31  United States
diyAudio Member
 
Join Date: Feb 2006
Location: Boston, MA
Default Advice on a 15"+ sealed subwoofer design

Hi,
I've been searching the web the last few weeks looking for a design that fits my requirements, but I haven't found what I'm looking for yet. I will be using the sub for both HT and 2ch. stereo. I have no size constraints on the sub, but I want it to be sealed. I'm also planning to use active equalization to extend the low frequency response.
I would like to buid a sealed box using either a 15" or 18" woofer. I've already purchased a 1000W plate amplifier for the project. I'd like to limit the driver price to <$300. Ideally the -3dB point would be 25Hz or lower. The current listening room is abot 15'x20'.
With the large plate amplifier and active equalization, is there any reason to build a larger box. With the power ratings of the woofers I'm finding in this price range, it appears that I won't be able to fully utilize the amp unless I build a higher Q box.
Initially I was planning to use an AV15 for the design, but I've had trouble getting in touch with the supplier.

Anyways, any suggestions on box designs or driver selection would be greatly appreciated.
  Reply With Quote
Old 21st April 2006, 11:44 PM   #2
diyAudio Member
 
Join Date: Nov 2004
Location: toronto
good luck!i was in the same boat.the suppliers either don't return you calls or emails or have no stock.i finally settled for the dayton15" titanic and it's seized.woofer will not move.
the only suggestion i can give you is
http://www.soundsplinter.com/
quick and helpful responses.i just couldn't stand that silly "x" on the woofer
  Reply With Quote
Old 24th April 2006, 05:33 AM   #3
simon5 is offline simon5  Canada
diyAudio Member
 
Join Date: Nov 2004
Location: Québec, Québec
Since you're in US, try http://www.ascendantaudio.com

They have many drivers in your price range. Call them, they don't answer much to emails afaik.

If you use active equalization, you need a huge amplifier like you have. In a situation where your driver is using 100W for a 40 Hz sinewave, it might require 1000W with active EQ at 20 Hz to achieve the same loudness.

The size of the box with active EQ is less important, but a larger box will be more efficient so you'll have more headroom with your amplifier.
__________________
DIYaudio for President !
  Reply With Quote
Old 25th April 2006, 07:56 AM   #4
dangus is offline dangus  Canada
diyAudio Member
 
Join Date: May 2004
Location: Vancouver Island
Have you looked at the Adire subwoofers?
http://www.adireaudio.com/Home/TempestSeries.htm
http://www.adireaudio.com/Mobile/KodaSeries.htm

Here's a US source: http://www.acoustic-visions.com/~aco...by_brand.shtml
  Reply With Quote
Old 25th April 2006, 08:10 AM   #5
simon5 is offline simon5  Canada
diyAudio Member
 
Join Date: Nov 2004
Location: Québec, Québec
These are nice, but backorder since forever or almost.
__________________
DIYaudio for President !
  Reply With Quote
Old 25th April 2006, 10:27 AM   #6
tinitus is offline tinitus  Europe
diyAudio Moderator R.I.P.
 
Join Date: Nov 2005
I dont know anything about these

http://www.acoustic-visions.com/~aco...rs/index.shtml

http://www.oaudio.com/TC2_PLUS.html

Or else I think Visaton have nice moderate 12" woofer
  Reply With Quote
Old 25th April 2006, 11:48 AM   #7
tinitus is offline tinitus  Europe
diyAudio Moderator R.I.P.
 
Join Date: Nov 2005
Or this "mysterious" Meniscus - they have a 12" and if its any good you could take two pr side

http://www.meniscusaudio.com/speakercomponents/
  Reply With Quote
Old 25th April 2006, 08:03 PM   #8
tinitus is offline tinitus  Europe
diyAudio Moderator R.I.P.
 
Join Date: Nov 2005
WOW! very nice 18" woofers

http://www.bmspro.info/?&show=item&u...66&param=value
  Reply With Quote
Old 26th April 2006, 12:52 PM   #9
badman is offline badman  United States
diyAudio Member
 
badman's Avatar
 
Join Date: Sep 2003
Location: Sunny Tustin, SoCal
If I were in the market for a sub..... I'd go with a Koda 15" sealed from www.creativesound.com. Yeah, Thiele Small parameters are unavailable.... but it's XBL^2..... and you can measure T/S parameters to calculate the optimal box size (I say go low-Q and use as little EQ as you can)
__________________
I write for www.enjoythemusic.com in the DIY section. You may find yourself getting a preview of a project in-progress. Be warned!
  Reply With Quote
Old 26th April 2006, 01:33 PM   #10
Jussi is offline Jussi  Finland
diyAudio Member
 
Join Date: Nov 2003
Location: Finland
Quote:
Originally posted by tinitus
WOW! very nice 18" woofers

http://www.bmspro.info/?&show=item&u...66&param=value
Indeed !

There is a 18" model with rather generous +-13mm linear excursion. Not bad for a PA driver. Efficiency is also ok, inductance low, response good up to 200Hz. Any idea of the price?

Jussi
  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
Should I Try A DIY 12 or 15" Sealed Design?? Fore Subwoofers 34 12th September 2007 01:37 AM
Quad bandpass subwoofer design need advice! DJFUTILE Multi-Way 6 29th March 2005 07:32 AM
Subwoofer guide posted, Sealed Dayton 15" DVC wigginjs Subwoofers 2 4th November 2004 05:39 AM


New To Site? Need Help?

All times are GMT. The time now is 10:51 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