single driver with bass...????

Have you consider coaxial speakers?
They sound quite good.

Ttrhp,
IMHO.. the F200A is a move in the right direction. Don't bother hooking up flea powered amplifiers to them. You need a good 40 or 50 wpc or more to wake up the big alnico drivers. You will give up efficiency but gain better bass and dynamics. They are great for nearfield listening, where head banging SPLs aren't needed. They also do classical very well if that's important to you. I also agree with you on the Monarchy SM70..it is one sweet little amplifier!

Good Luck!

Check out the JLM/2 from Carolina Audio. Not sure how they'll do with your amps, but I've heard them with some <30wpc amps and was really impressed with their bass response...

Try the Hammer Dynamics Super-12 speaker kit. They feature custom 12" Emminence single-drivers with a supertweeter crossed in above 10kHz. The kit includes all the crossover parts needed, too - everything except the easily built cabinet.

I own a pair and it is the best, unassisted, bass I have heard from a single driver system. They pack punch and depth to 45Hz.

My 6 foot tall Cain & Cain I-Bens go as low(at 15x the cost), but not with the same punch. But, I use a pair of passive C&C Bailey subs to get the rest.

Don't let the price fool anyone, the Hammers are really something special. Especially, after doing all the simple mods listed on the old Single Driver Website Super-12 Tweaks page. Some simple x-over mods and it becomes a bigtime contender in the under $2k single-driver field. Luckily, the kits come stock with Solen Hepta-Litz inductors, a big part of the x-over upgrade.

Bob Brines FT-1600 mkII have tremendous bass.