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 27th December 2009, 02:00 PM   #1
diyAudio Member
 
Join Date: May 2008
Location: Towson, Maryland
Default DIY Budget Sub

I have a JL Audio car sub that I no longer use and it is in a sealed box that is slightly larger than JL audio recommends.

JL audio recommends an 18"X11"X10.25" \
My box 15"X15"X11" / exterior dimensions 3/4'' mdf

I would like to add it to a budget bookshelf system for music only using the Best Buy Insignia NS B2111 that I am building for fun. I will eventually build some DIY bookshelves.

My JL Audio sub is a 10W0-4. 10" 4 ohm budget sub

Fs 24.2
Qes 0.420
Qms 8.560
Qts. 2.45 ft3 or 69.4 litres
Xmax 8.6mm or .340"
efficiency 85.5db
power handling (continuous) 125 watts

I have been looking at some Parts Express plate amps, Do you have any other budget plate amp suggestions?

Do you think I should build a ported enclosure or stick with the sealed? I am a home builder so I have all the necessary tools.

Thanks for any suggestions and help.

Scott
  Reply With Quote
Old 27th December 2009, 03:48 PM   #2
Mikey p is offline Mikey p  Canada
diyAudio Member
 
Join Date: Feb 2004
Location: Sask. Canada
You would get a lot more output out of the sub in a ported enclosure 2.5 cu.ft tuned to 26 hz with a 4" flared port 17" long. Either sealed or ported, a 100 watt Dayton amp would be all you'll need.

Parts-Express.com:*Dayton SA100 100W Subwoofer Amplifier | subwoofer amplifier subwoofer amp sub amplifier sub amp plate amp DayAudSubAmp050109
  Reply With Quote
Old 27th December 2009, 05:07 PM   #3
diyAudio Member
 
Join Date: Jul 2008
Location: Pacific Northwest
You could also pick up one of Jack Hidley's surplus Foster WF-100K amps.

NHT drivers and electronics surplus sale

Essentially the same wattage, considerably cheaper.
  Reply With Quote
Old 27th December 2009, 10:23 PM   #4
bjorno is offline bjorno  Sweden
diyAudio Member
 
Join Date: Mar 2005
Location: Jacobsmountain
Send a message via MSN to bjorno
Quote:
Originally Posted by Mikey p View Post
You would get a lot more output out of the sub in a ported enclosure 2.5 cu.ft tuned to 26 hz with a 4" flared port 17" long. Either sealed or ported, a 100 watt Dayton amp would be all you'll need.

Parts-Express.com:*Dayton SA100 100W Subwoofer Amplifier | subwoofer amplifier subwoofer amp sub amplifier sub amp plate amp DayAudSubAmp050109
Hi, Good suggestions!Maybe this folded T-TQWT is suitable too:

b
Attached Images
File Type: jpg JL_Audio_T-TQWT.jpg (196.0 KB, 349 views)
  Reply With Quote
Old 27th December 2009, 11:12 PM   #5
badman is offline badman  United States
diyAudio Member
 
badman's Avatar
 
Join Date: Sep 2003
Location: Sunny Tustin, SoCal
Hey, realistic car specs! Those are a rarity indeed!
__________________
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 28th December 2009, 11:17 AM   #6
Mikey p is offline Mikey p  Canada
diyAudio Member
 
Join Date: Feb 2004
Location: Sask. Canada
Quote:
Originally Posted by littlemike View Post
You could also pick up one of Jack Hidley's surplus Foster WF-100K amps.

NHT drivers and electronics surplus sale

Essentially the same wattage, considerably cheaper.
It should be also mentioned that this amp has a Hi-Pass filter at 29 hz that would need to be modified for this application.

Last edited by Mikey p; 28th December 2009 at 11:22 AM.
  Reply With Quote
Old 28th December 2009, 05:41 PM   #7
diyAudio Member
 
Join Date: Jul 2008
Location: Pacific Northwest
Quote:
Originally Posted by Mikey p View Post
It should be also mentioned that this amp has a Hi-Pass filter at 29 hz that would need to be modified for this application.
True, I believe that is also the case with the Dayton, but no documentation is available. In the case of the Foster, considerable details and instructions are provided, as well as a spreadsheet to calculate the appropriate values of resistors.
  Reply With Quote
Old 29th December 2009, 02:41 PM   #8
diyAudio Member
 
Join Date: Oct 2009
I am using the exact same subwoofer in my home audio setup. I have tried both sealed and bass reflex enclosures. The sealed enclosure sounds really tight and articulate, but lacks the 20-30hz extension the bass reflex enclosure had. Both types left me wanting. I think a bass reflex design is the most practical, mostly because of the lower extension. I think I may try a transmission line or a folded horn next.
  Reply With Quote
Old 29th December 2009, 10:25 PM   #9
diyAudio Member
 
Join Date: May 2008
Location: Towson, Maryland
HiVi Guy,

What are you powering it with and what are you trying to accomplish with a folded horn or transmission line?

I am looking to do this for the low end for a budget 2.1 music system (for fun) using bookshelf speakers.

Scott
  Reply With Quote
Old 30th December 2009, 03:55 PM   #10
diyAudio Member
 
Join Date: May 2008
Location: Towson, Maryland
The NHT plate amp looks like a good deal. The only thing I don't like is the spring clip speaker level connectors. However the Dayton plate amp is out of stock until @ 2/20/10 which is quite a ways off.

Scott
  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
DIY budget Super Tweeters davidhugo Multi-Way 11 2nd April 2009 10:48 AM
Budget DIY, I tried searching Luke352 Multi-Way 12 22nd July 2006 02:12 PM
budget diy bookshelves and sub uzziah Multi-Way 2 1st March 2005 07:24 PM
Help with my budget sub diy vegeotto Subwoofers 2 24th January 2004 03:21 AM
is there a budget diy design for me? leadbelly Multi-Way 7 20th January 2003 01:09 AM


New To Site? Need Help?

All times are GMT. The time now is 06:12 AM.


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