Single driver full range speakers

I tried a single driver speaker and while it sounded great at lower volumes it just didn't do it for me after a while.   I admit I fell in love with their presentation of vocals and imaging,   they struggled with rock at even modest listening levels.  

I used them for about a year and I'm glad I tried a single driver speaker but in the end I was missing the sparkle and air a tweeter brings to the party so I sold them and bought a sealed acoustic suspension 2 way.  Never looked back.  

Hi OP

I have encountered the same question to me by another audiophile friend, as some have posted above, the speaker I was asked my opinion was a Reference 3A De Cappo driven by JELabs 300B. those are a wonderful match but lacking lower bass power to the owner. IMHO, I thought the bass was good enough. but everyone hears differently and have their personal wants

therefore, after months to trying different things, he ended up with an external powered sub(s). nothing can be done any better. in your case, you can try different enclosures in your BASS drivers. BUT again, in IMHO, using external powered subs, you can Taylor the power output and the crossover.

MY last idea is to build a woofer enclosure, power it up with Class D amps and use a DSP (ex MiniDSP) to custom tailor the frequency match to your open baffle speakers

good luck

Several folks have recommended adding a sub, and that’s a proven way to add bass. For several years I used a Martin Logan Dynamo with my 6.5-inch FR diy speakers. But a few months ago I built a Nelson Pass -designed EQ module designed for FR speakers, plugged it in and I no longer use the sub. Go to diyAudio store.com and look for it. As I recall, Pass even posted a few customizations for particular drivers. It’s an easy project and surprisingly effective. Cheers.

I know Louis at Omega Speakers used to make a full range tower with an integrated powered sub at the bottom. I heard they were great. I personally use full range speakers, but almost always with a separate powered sub. You can use a powered sub's phase control to really dial it in and integrate it properly. 

I like the idea of an active crossover. With one in place, you could always add a third speaker set, something smaller for a tweeter? If you wanted to bi-amp or tri-amp.

Below is the link to the one I’ve always wanted to try. 100% analog. Also, you can buy new frequency X/O cards for $12 bucks apiece, so lots of experimentation for little added cost.

https://sublimeacoustic.com/products/k231-stereo-3-way-active-crossover?variant=27880714185&country=US&currency=USD&utm_medium=product_sync&utm_source=google&utm_content=sag_organic&utm_campaign=sag_organic&srsltid=AfmBOoq_oebLkKmABXDeS7PUQ7uTk63NJKByFp3XZKGLTtbmGd3AfNiLInI&com_cvv=8fb3d522dc163aeadb66e08cd7450cbbdddc64c6cf2e8891f6d48747c6d56d2c