Can you just close the back of a open back cabinet?

Hey all,
I have a TA 15, which I love, and use it with an open back 1X12 cab. I play a lot of corporate gigs, private parties weddings etc. It's wedding season now and here in California that means outdoor gigs. I lose all the tone and most of the sound with the open back. Can I just close the back of the cabinet with some kind of removable panel?
Thanks.

Sure. Or you could add a Thiele cabinet and have the best of both.

Tried one. Didn't really like it. Maybe with a different speaker in it.

Did you try it alone or with a second speaker cabinet? I'm not crazy about a Thiele alone, but love it in conjunction with a 1/2 back 1x12 cab.

I just closed the back of my 23" open back cab because I needed tighter bass (used with the ED). It works fine and helped quite a lot, but you don't get something for nothing. The closed cab does not sound as free and airy which I miss.

If your getting setup is not cutting outside, I don't think converting to closed back is going to solve your issue. Have you tried lifting your rig up. I use an amp stand for my Express 5:25 combo (similar in output to the TA-15) and that makes all the difference. Sometimes I also use an extension cab which does help at high volume levels