Single driver full range speakers


Hi,
I am a simple home hobbiest. I've built an great sounding full range single speaker set (so no cross-over,, and that's the point. I don't want a x-over).
But of course it lacks terribly in bass. Is it possible (is it commonly done?) to add a woofer into the cabinet with no cross-over (again, simple straight wire to amp). Would it require wiring in parallel or series?

Currently each speaker has one TangBand W8-1808 full range 8" driver and sounds very good.

Thanks in advance, I really would like to know if this is possible (safe?) to do.
Rob

tunehead
Post removed 

Listening to single driver speakers at audio shows in recent years, the most memorable experiences have been Songer Audio and HHR Exotic.  Not sure of the current status of HHR, but Dale's all-out interpretation of a Walsh driver is a high mark. 

“No One Person has been able to hear in use most of the Single Driver Speaker Designs that are in use” 

headphones? LOL 

Headphones, even though suggested as a Jest, the idea an individual has been able to experience all models since the 00's is a real challenge.

Speaker Types referenced in this thread have a History extending back to the 50's when they were in their Heyday.

I am able to listen to Tannoy Dual Concentrics from the 60's when a friend chooses to put them to use in place of their Quad 57's.  

 https://www.headphonezone.in/blogs/audiophile-101/evolution-of-headphones?srsltid=AfmBOoqgVb3So3SSwFaTUFXzbfTqF5opfNzu6Vm3TJJyxtAPf-TgcVvF                  

@tcutter please explain your point.. are you saying 2W/3W/4W/5W speakers are more accurate? agree on that, but 1W still has some advantages, such as x-over circuit impact on phase, damping factor etc..