Is the Dynavox DY-200 9A any good? Also: inexpensive open-baffle friendly woofers?

So I am a newbie looking to experiment with an open-baffle lower-frequency speaker. The target frequencies are 45-200 Hz; my AV Receiver thinks this is a subwoofer while DIY forums don't think so 🙂

My question is specifically about this driver:

Lautsprecher Technik - Dynavox DY200-9A 8 inch 8 Ohm Woofer Speakers

It is very attractive on price and it is known to be used in open-baffle designs CT 306

So I wanted to get a couple of these and try to do what I could; worst case, I write the expenses off to experience.

But is the driver itself any good? I understand it's nothing hi-end 🙂 but is it workable, does it sound nice?

While the Visaton WS 25E is bigger and probably better, it's harder to write *that* off to experience; and I do wonder how much better it really is if we just think of the 45+ Hz range.

Advice on other inexpensive open-baffle-friendly woofers would also be much appreciated.
 
The DY200-9A is not very efficient and the Qts and Xmax are not even specified (not a good sign). That makes it impossible to assess suitability for OB, unless you can find that info somewhere.

Thanks. This confirms the reservations I have been feeling, despite the CT 306 existing.

I've been pointed to another inexpensive 8" high-Qt woofer; this time everything is specified on the page - click "show all data" for lots and lots of numbers. Would the Visaton WS20E be a good idea? WS 20 E - 8 Ohm | Visaton
 
Thanks. This confirms the reservations I have been feeling, despite the CT 306 existing.

I've been pointed to another inexpensive 8" high-Qt woofer; this time everything is specified on the page - click "show all data" for lots and lots of numbers. Would the Visaton WS20E be a good idea? WS 20 E - 8 Ohm | Visaton


If I understood the specs correctly, that 8" driver has a linear Xmax of +/-3mm. I doubt that's going to be enough for OB bass. There's a reason why people use 2 or even 4 high-Xmax 15" drivers per channel for OB.