Low Profile Concave Speaker Technical Question

[dbmonkey]

Hi all.
I need a very low profile (thin) speaker for a project of mine. The speaker needs to be less than 1/3 inch tall and less than 2.5" diameter.
Sound quality can be very poor if necessary. High efficiency is preferred. I am looking to spend less than $40 on this speaker.

My question is this:
Are there any speakers that meet this specification?

Are there any speakers with CONCAVE CONES?
This is what I am referring to:
postimage.org/image/5j2ve50pp

Thanks in advance!!

 

[dbmonkey]

For the record, I want to install this speaker in my computer as a fun project.

Any ideas?

 

[JerryLove]

Think "shielded"?

 

[theJman]

What about an exciter? They make it possible to turn many different things into a speaker of sorts. That link also contains small BMR drivers, which may work as well.

 

[dbmonkey]

Jim, thanks for the link; but I ended up getting this instead:

www cui.com/Product/Components/Speakers/Low_Profile:__50~57_mm/CLS0571M-L152

Hopefully it will work out well.