looking for a speaker with one driver.

Try looking here. I'm sure that you'll find something of interest and probably learn a lot along the way. These folks are buying, selling, designing, building, tweaking, etc... "one way" or "full range" speakers to death. Sean
>

http://f18.parsimony.net/forum31999/

I would recommend looking into the RL Acoustique Lamhorn 1.8's. You can contact Robert Lammare directly in Canada for more information. I am pretty sure they use the AER MK-1 full range driver and are also horn loaded. 4 Watts should be plenty with them.

They were very well reviewed and spoken quite well of at the Stereophile show.

And Sean, No I do not sell them. :)

You can try www.thehornshoppe.com, try doing a search on Google for lowther speakers. There is a David Dicks in St. Louis who sells Lowthers. Fostex drivers are ok. I build a Fostex based single driver full range , bass reflex speaker. They image well and have incredible clarity and detail (and this was a cheaper Fostex as opposed to the Sigma series Fostex) but not great bass. And th I have heard the bass is improved with Lowthers in a Fedelio horn loaded enclosure. You can also combine the Fostex or the Lowther with a an Audax 15 driver bassed on Basszilla design from Dan Olsher(check www.madisound.com). I was thinking about the Basszilla but decided against it as it requires a large room!! There is also a design available on the net by the name of Voight Pipe which looks cool and simple to build and will work with a Fostex or a Lowther, check this out as well. As for myself, I went with a speaker that's crossover-less from Decware High Fidelity Engineering( Check this site out www.decware.com). The reason I choose the RL-1 from decware? Well, upper frequency extension is better, imaging is better and holographic/3D presentation is amazing! I would not even build a 300b as the Zen amp from Decware for $500-700 will simply KILL any 300B! Good luck....By the way, hey wanna buy my 60lb bass reflex design for single drivers?...