Hate to breathe life into a dying thread, but I guess this is it? The best 2.0 speakers for $75 is a set of $110 2.1 speakers? I know there is little in my price range that is audiophile quality, but what comes closest?
For $75 its difficult to find anything that would actually sound better than the Logitechs. Theres the Swan 1080MkII
or the M-Audio AV-40
which are both popular and very affordable audiophile speakers, but they both sit just outside your budget. Your best bet would be to pick up a cheap desktop digital amp like this Dayton DTA-1
(which I believe is just a rebadged Sonic Impact T-Amp) then shop around for passive speakers of your choice. This was a popular option some time back, and that amp was usually paired off with these Insignia
speakers from Best Buy. This option is slightly cheaper than the above two sets, but its still over $75.
To get to the point...I can't really think of anything. I would suggest waiting and saving a bit more before you start shopping.
Best Buy has these Sony
passives that are cheaper than the Insignias. Paired with the Dayton amp, the whole thing comes out to roughly $96 and some change. I've never heard those Sony speakers before, but I'm fairly certain they'll sound LEAGUES better than the Logitechs you're using now (or practically anything from Logitech really).
I just found these M-Audio AV20
for $80. I have no idea how they sound. I know the M-Audio AV40s sound excellent, but I can't say if that carries over to these. They definitely fall into your budget though. Though, personally, I'd still go with the amp + passive route. Its how I started out at least.