NHT 12 ohm 10" subs at madisound - 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 14th December 2006, 02:27 PM   #1
badman is offline badman  United States
diyAudio Member
 
badman's Avatar
 
Join Date: Sep 2003
Location: Sunny Tustin, SoCal
Default NHT 12 ohm 10" subs at madisound

$55 each for good quality, if somewhat generic, 10" subs. Fs of 23Hz, 13mm Xmax, and the real rub: 12 ohm coils. Parallel 2, and you get six ohms.... add a 18 awg aircore at about 12mH and you'll push that back up to 8 ohms, increase Qes and accordingly Qts, to get a little extra bass extension out of them

What's the point? $130 per channel buys you two high excursion tens, you wind up with a nice 8 ohm load and OB appropriate(ish) Qts range......

subs are on clearance/sale page at madisound www.madisound.com

The aircoils are available many places, the Jantzens from www.partsexpress.com would be my choice.

For most people, this would be enough displacement for eq'd OB use.

One could roll in a FR125 first order on top of these, and barely need any EQ to deal with dipole cancellation if they chose the crossover points right.
__________________
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 14th December 2006, 07:08 PM   #2
diyAudio Member
 
Join Date: Apr 2003
Location: Seattle
Why not parallel 3 for a 4 ohm load?
  Reply With Quote
Old 14th December 2006, 09:50 PM   #3
badman is offline badman  United States
diyAudio Member
 
badman's Avatar
 
Join Date: Sep 2003
Location: Sunny Tustin, SoCal
Why indeed! Mine was as much a project idea as anything else, but if you want to parallel 3, be my guest
__________________
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 15th December 2006, 08:00 AM   #4
diyAudio Member
 
Join Date: Apr 2003
Location: Seattle
I was only thinking since it's common in car audio
  Reply With Quote
Old 18th December 2006, 09:08 PM   #5
diyAudio Member
 
Join Date: Nov 2006
Send a message via AIM to clearwaterms
what would be the benefit of building a box with three of these instead of 1 15" subwoofer? I am looking for something for HT purposes...

I realize the box will be quite large, and quite heavy. Looking at WINISD to build a box for three of these vented I would need to build a 228 liter box (if I put the driver perameters correctly)

that is for a vented box, a sealed box would be only 110 but would have it's 3db down point at like 35 hz. vs. the vented at 228 has it's 3db at 23 hz
  Reply With Quote
Old 18th December 2006, 09:24 PM   #6
diyAudio Member
 
Godzilla's Avatar
 
Join Date: Nov 2005
Location: New York
http://www.madisound.com/cgi-bin/ind....27123&pid=723

Is this $55 subwoofer old news or is it still a viable option? Is the 13mm peak speck really just 6.5mm one way? Will the 12 ohm rating work with current plate amps?

What are the best 10 sub driver options around these days?

TIA,
Godzilla
  Reply With Quote
Old 18th December 2006, 09:50 PM   #7
badman is offline badman  United States
diyAudio Member
 
badman's Avatar
 
Join Date: Sep 2003
Location: Sunny Tustin, SoCal
Three of these would have more displacement than a typical 15", quite possibly better power handling due to more cooling area, and they're very affordable. People often describe smaller bass drivers as 'quick' (though 'fast' bass is a myth)

But mostly the price and build quality for $55 is excellent. The low Fs (23Hz!!) is excellent for a 10" to be used as a sub. It is very similar to something like an adire shiva.

Best 10" subs... stiff competition. TC sounds has http://www.tcsounds.com/db500.htm

and there's

http://www.partsexpress.com/pe/showd...number=295-460

too many others to mention. This one has the unique 12 ohm coil, and the very low Fs, and probably a good 6.5mm xmax, the price, and the well optimized T/S parameters make it a very affordable and flexible option. Someone just did a project with four of Apex Jr.'s "Super 8s" and these are lower Fs... 4 10"s in a sub... yummy!!
__________________
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 18th December 2006, 10:01 PM   #8
diyAudio Member
 
Join Date: Nov 2006
Send a message via AIM to clearwaterms
Quote:
Originally posted by badman
Three of these would have more displacement than a typical 15", quite possibly better power handling due to more cooling area, and they're very affordable. People often describe smaller bass drivers as 'quick' (though 'fast' bass is a myth)

But mostly the price and build quality for $55 is excellent. The low Fs (23Hz!!) is excellent for a 10" to be used as a sub. It is very similar to something like an adire shiva.

Best 10" subs... stiff competition. TC sounds has http://www.tcsounds.com/db500.htm

and there's

http://www.partsexpress.com/pe/showd...number=295-460

too many others to mention. This one has the unique 12 ohm coil, and the very low Fs, and probably a good 6.5mm xmax, the price, and the well optimized T/S parameters make it a very affordable and flexible option. Someone just did a project with four of Apex Jr.'s "Super 8s" and these are much better... 4 10"s in a sub... yummy!

I'd think that most plate amps would be okay with it, since they're meant to handle 4 or 8 ohm loads. Might muck with the filters, but subamps kind of have to be load stable, due to big impedance peaks from sub drivers.
I guess a more direct question is this. I am planning on building a subwoofer for HT use, I am thinking about either three of these or something like a single 15" dayton DVC. I plan to power them with a bash 500w amp

which would be better? this is for my HT dedicated room in my basement, the only problem with my HT room is that I can't corner load the subwoofer, and I still want to shake the house on command...

thanks
  Reply With Quote
Old 19th December 2006, 01:50 PM   #9
badman is offline badman  United States
diyAudio Member
 
badman's Avatar
 
Join Date: Sep 2003
Location: Sunny Tustin, SoCal
Well, 'better' is a subjective term. There are 15"s that can outpace 3 of these, but mostly they're significantly more expensive. The Adire Tempest is what I use, and it's priced about the same as 3 of these, and I'd expect similar performance.

If I were you, I'd make a big sub made with the 10"s in a long line. Giant sealed enclosure, loaded into the 'corner' of the floor and the wall. By spacing out the drivers along a long length, you can break up room resonances, and smooth out the bass response. Something like a 12"x12"x72" cab for all three, with drivers on either end, and in the center. Oh, and lots of bracing.
Wouldn't protrude much into the room, but would be big and go deep, especially with EQ.... the reduction in room modal/nodal behavior would be quite an advantage over a single-driver sub.
__________________
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 29th December 2006, 02:05 PM   #10
diyAudio Member
 
Join Date: Apr 2005
Location: NH
Send a message via AIM to 69stingray Send a message via MSN to 69stingray Send a message via Yahoo to 69stingray
Aren't those NHT subs designed for sealed cabinets?
__________________
Audio DIY Page
FOLLOWMY529.COM - Subscribe and follow the performance of my daughter's 529 College Saving Account.
  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
SR-71's Seas ER18RNX 7" woofer sold out at Madisound :( Other 2-way suggestions? buttfacelicker Multi-Way 39 17th April 2008 08:35 PM
are bandpass subs passe compare to "horn-sub"? freddi Subwoofers 9 30th September 2007 07:54 PM
replacing 12" sub in box with back speaker mounted 6" subs aussiebuddha Car Audio 7 14th October 2006 08:26 PM
Convert floor standers to subs with Tang Band 8" subs? prerunnerv6 Subwoofers 3 26th February 2006 12:44 AM


New To Site? Need Help?

All times are GMT. The time now is 11:39 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