Building cheap surrounds, what wide-range driver? - diyAudio
Go Back   Home > Forums > Loudspeakers > Multi-Way

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
Reply
 
Thread Tools Search this Thread
Old 11th February 2002, 07:52 PM   #1
diyAudio Member
 
Join Date: Feb 2002
Lightbulb Building cheap surrounds, what wide-range driver?

Hi all, DIY newbie here.

I'm building a Home Theater chair and I want to put the surrounds into the headrest. As you can imagine the drivers will be pretty close to the ears.

I want to keep the cost of the speakers very low, like $35 for the pair. So I was thinking of a 1 way design to keep everything simple and cheaper. But I'm at a loss for what would be an acceptable wide range, I cant seem to find one that gets near 20 khz (at any price), while I know I dont need bass, I certainly need top-end aswell as midrange. There are tons of HT systems with 1-ways and a sub, why cant I find a wide range with acceptable specs?

Can somebody recomend a cheap wide range for surrounds?

Also If I do use the 1 - way does it mean I do not need any type of crossover?

Thanks for any help
  Reply With Quote
Old 11th February 2002, 07:58 PM   #2
Super is offline Super  United States
diyAudio Member
 
Join Date: May 2001
Location: Connecticut
Send a message via AIM to Super
If its a smaller driver, you may want to filter out low frequencies to prevent the driver from being damaged, and distortion would be high anyways due to cone breakup.
__________________
Bryan
  Reply With Quote
Old 11th February 2002, 08:15 PM   #3
diyAudio Member
 
Join Date: Feb 2002
Location: Seattle, WA
I think Fostex has some relatively cheap/small fullrange drivers (Like the FE87) ... you could check them out, and maybe add a dome tweet with off axis with a inline cap for filtering or something if there isnt enough high highs.
  Reply With Quote
Old 11th February 2002, 08:19 PM   #4
diyAudio Member
 
Join Date: Feb 2002
Super, I figured that in HT, the surrounds arent usualy fed low signals?

Nonlethal, thanks for the link, that fostex looks pretty good. I'm really new at this so if you can entertain a dumb question... the in line filtering, that means I let the Fostex run full range signal while a tweeter gets a simple low freq filter? Is this cheaper than a full x-over?
  Reply With Quote
Old 12th February 2002, 12:47 AM   #5
diyAudio Member
 
Join Date: Feb 2002
Location: Seattle, WA
Yes, St, It could be as simple as a single cap. However by doing this you could end up with the opposite problem (too much high) which is why i suggested putting the tweets off axis. You should probably just try the full ranges first. Btw, Parts Express has some alternatives to the Fostex i mentioned above. So are you going to be putting some sort of LF Transducer in the chair (like bass shakers or something?) or just using subs?
  Reply With Quote
Old 12th February 2002, 03:37 AM   #6
diyAudio Member
 
Join Date: Feb 2002
Yeah there will be a bass shaker TT in the seat (any advice on this?)

I'm a little mystified by these wide-ranges, they dont seem to go up as high as they should, do they run out of spec when they are so close to the ear? I mean all those crappy all in one 5.1 dvd systems have wide ranges and their spec'd up to 20khz. The Fostex you pointed out seems to be the widest, dynamicly, I've seen.

I will probably throw a pot in between for easy adjustment as they will likely be too loud.
  Reply With Quote
Old 12th February 2002, 03:54 AM   #7
diyAudio Member
 
Join Date: Feb 2002
Location: Seattle, WA
Some of the commercial offerings simply lie... the others (ala Bose) simply use large cone tweeters that play down into the upper mid, and then run the rest of the midrange through the 'sub', which ends up being more of a mono woofer...

As for the Bass Shakers: just dont cross them over too high, you get a 'voice-in-your-butt' effect... and a lot of people don't like them for use with music, so if this is a dual purpose system, you might want a switch on the chair or something.

Good luck.
  Reply With Quote
Old 12th February 2002, 05:13 AM   #8
diyAudio Member
 
Join Date: Feb 2002
Thanks for the advice, I will keep my eye out for good wide-ranges, it doesnt seem many people have much experience with them.

As for the TT, I'm going to use a small sub-amp to drive them I think it has a crossover built in so I can dial in the cutoff probably about 140-40, its really mostly for HT aps, I'm aware bass shakers aent really a great musical thing (neither are surrounds for that matter)
  Reply With Quote
Old 12th February 2002, 06:55 AM   #9
frugal-phile(tm)
diyAudio Moderator
 
planet10's Avatar
 
Join Date: Oct 2001
Location: Victoria, BC, NA, Sol III
Blog Entries: 5
Default Re: Building cheap surrounds, what wide-range driver?

Quote:
Originally posted by St= Z

So I was thinking of a 1 way design to keep everything simple and cheaper.
If you can find some the Radio Shack 40-1197 (aka FE103) is an astounding driver for the $5 clearance price. The Tag-Band 3" drivers are also getting very good reviews (available at MCM IIRC) and some select units at http://www.nuera-acoustic.ca/.

dave
  Reply With Quote
Old 12th February 2002, 02:57 PM   #10
SteveG is offline SteveG  United States
Account Disabled
 
Join Date: Jan 2002
Location: Newton Falls, Ohio
I would have to agree with planet10- tang band. They seem to have decent specs, and are like $4 US a piece at mcmelectronics.com (if you can find them on the site- it's really hard to navigate). Sounds like a cool project.
Steve
  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
Wide range driver questions for xo.. JandG Multi-Way 2 23rd October 2006 01:11 AM
New Reference Speakers with Full/Wide-Range Driver surf,sun&sound Full Range 206 15th June 2006 01:27 PM
Wide range driver based 2 way system, Supravox?? zygibajt Full Range 18 14th March 2006 02:42 AM
help me choose a wide range driver johnmark Full Range 38 26th June 2005 09:39 AM
wide'ish range driver? dunderchief Multi-Way 1 18th July 2004 12:27 AM


New To Site? Need Help?

All times are GMT. The time now is 01:29 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