Enclosure recommendation for cheap drivers - diyAudio
Go Back   Home > Forums > Loudspeakers > Multi-Way
Home Forums Rules Articles diyAudio Store Gallery Wiki Blogs Register Donations FAQ Calendar Search Today's Posts Mark Forums Read

Multi-Way Conventional loudspeakers with crossovers

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
Thread Tools Search this Thread
Old 21st July 2008, 01:24 PM   #1
asvisn is offline asvisn  United States
diyAudio Member
Join Date: Jul 2008
Default Enclosure recommendation for cheap drivers

Got these generic looking 10W drivers from an old Mitsubishi TV. Never built a speaker enclosure before. Anyone have any recommendations? Just want to play around a bit.

Click the image to open in full size.
  Reply With Quote
Old 21st July 2008, 01:28 PM   #2
diyAudio Member
wigginjs's Avatar
Join Date: Dec 2003
Location: Columbia, SC
Cardboard box? =)
  Reply With Quote
Old 21st July 2008, 01:49 PM   #3
diyAudio Member
Join Date: Apr 2007
Since we don't have the specs for the speaker a good bet would be a simple sealed box. Less than 1/4 cubic foot for that small a driver. Maybe 9"h by 7"w by 6"d or something like that.
  Reply With Quote
Old 21st July 2008, 08:11 PM   #4
asvisn is offline asvisn  United States
diyAudio Member
Join Date: Jul 2008
Easy enough. Does the placement of the driver matter at all. I'm guessing no in this case..
  Reply With Quote
Old 21st July 2008, 08:23 PM   #5
diyAudio Moderator
Cal Weldon's Avatar
Join Date: Jan 2004
Location: Near Vancouver
Put it off center maybe 1/3 from one end.
planet10 needs your help:
Let's help Ruth and Dave
  Reply With Quote
Old 21st July 2008, 09:57 PM   #6
diyAudio Member
Join Date: Feb 2002
Location: Western Sydney
I'd just put them on a baffle of some sort and see how they sound; you could download the "Edge" to give you an idea of placement, and "Synrta" to get an idea of the frequency response.
If they've got a small dia. voice coil, they might be good fairly high up, I doubt if the response will be too smooth (but you never know...)
Impedance varies with frequency, use impedance plots of your drivers and make crossover calculations using the actual impedance of the driver at the crossover frequency
  Reply With Quote
Old 21st July 2008, 11:35 PM   #7
DcibeL is offline DcibeL  Canada
diyAudio Member
DcibeL's Avatar
Join Date: May 2003
Location: Saskatchewan
You could hook them up to a wall socket and watch a little fireworks show.
The power of Science compels you!
  Reply With Quote
Old 22nd July 2008, 12:25 AM   #8
diyAudio Member
John Busch's Avatar
Join Date: Oct 2007
Location: Hill country, Texas

Judging from the reply's up to now... most do not see much potential in the driver you have.... OK... it is a very inexpensive medium range .... inexpensive driver that the maker ... likely got more out of that makes sense.... but much to learn here....

So... we need to quantify.... qualify what we have... It may turn out to be a sleeper mid-range... part of a larger 3 way.... with maybe an equally inexpensive 8" woofer and a five buck 2" cone tweeter... easy to make the hundred buck each drivers sing... more to learn to do it with simple low buck drivers....

So.... I love this kind of challenge... tell us what you have in mind?

Think about what you want to do.... achieve... it can be amazing what you can accomplish as you take a sows ear and transform it into a silk purse...

Look forward to your reply..... BTW.. courage and conviction can move moutains!!

  Reply With Quote
Old 22nd July 2008, 12:30 AM   #9
diyAudio Member
Join Date: Sep 2006
Send a message via AIM to FUCHSAUDIO Send a message via Yahoo to FUCHSAUDIO
Default How about ?

I always liked PVC tubing. You can use the angle to face it forward, a little cement or sand or plaster of Paris to weigh down the bottom. Think of an inverted letter 'L' , with the speaker on the short end.

A little cotton batting or fiberglass insulation (use gloves) is cool too. Cheap, available at Home Depot, or any building supply place.

If your "anal" (and hate resonances) use a cement tube (used for sewage and water supply), and perhaps a wood baffle to mount the driver. Wish I was kidding, but I've seen and heard them. Very cool.
  Reply With Quote
Old 22nd July 2008, 12:52 AM   #10
diyAudio Member
Join Date: Jun 2004
Location: Indiana
If you can't measure the fs and Q then this is what I suggest. take chunk of plywood, particle board or whatever (even cardboard in a pinch) about 3'x3' or so and see how it sounds. Vocals and brass sound good? Is the midrange clear? Any bass at all?

If the answer to all of these is yes then there is potential as a OB fullrange to be supplemented on the bottom end. Next step is to build a sealed box maybe20 to 30% larger than the average commercial speaker with that sized driver. Just eyeball it as it is not critical. Make sure that it is really sealed (i.e. air tight) but make the back removable. Throw some fiberglass of pillow stuffing in there to damp things a bit.

Now play some music. Is the bass boomy? If so try a bigger box. If not the open up the back and put something solid and rectangular in there to take up some space. More music, better? Worse? keep adjusting the volume like this until you find the combination with the best bass response without becoming boomy. Now figure the internal volume by subtracting the volume of the stuff you put in there (not counting the damping material) from the initial internal volume.

Now build two boxes of that internal volume and another open baffle like the first one. Try listening to both with good stereo sources and see which you like the best as regards imaging, dynamics etc. If the OB needs some bass support that is certainly doable if the other characteristics are good.

You now know which one to build in the pretty mode.

Without specs don't even worry about trying a ported or other augmented design as it would be a miracle if you got it right by trail and error.

Good luck. Some amazing results have been gotten with cheapo junk drivers (though more often with older units) so give it a try.
Generic Signature
  Reply With Quote


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
PHL 1220 enclosure recommendation Sjef Multi-Way 10 22nd October 2013 07:58 AM
Crossover Spec Recommendation for DYNAUDIO Drivers??? speedemon Multi-Way 2 9th June 2009 03:59 PM
How's this for a cheap GC enclosure? mattjk Chip Amps 63 22nd April 2006 08:17 AM
Recommendation of 2 cu. ft. enclosure for Titanic 12" MKIII and Rythmik 350W Amp AVaholic Subwoofers 0 15th January 2004 06:48 PM
enclosure recommendation for tempest sub supes Multi-Way 6 12th March 2003 07:39 PM

New To Site? Need Help?

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

vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.
Copyright 1999-2017 diyAudio

Content Relevant URLs by vBSEO 3.3.2