JBL d123 crossover yes or no ?

No crossover is needed for either 8 or 16 ohm version. Pretty good sounding, but they don’t cover the high or low frequencies really well. I have enjoyed them for what they are!

I googled this driver and I found evidence it has been used as a woofer, but I also found it is somewhat "full range" and was designed as a guitar amp speaker, not the best for general music listening.  but if indeed it is "full range", then no crossover needed.

Jerry

It looks like a high quality PA speaker.  Worth playing with for sure!

Also, try a little EQ here and there, you may be pleasantly surprised by what a little smoothing can do.

@rocky1313,

The JBL D123 is a 12’’ extended range speaker design for flush wall mounting between studs. See article below:

Mike

https://www.lansingheritage.org/images/jbl/specs/home-comp/d123/page1.jpg