I haven’t because honestly I feel JBL’s smoke EV’s (Fane Crescnedo’s do too imo). Those for my taste are to smooth and bland, while JBL’s are raw, gritty and actually have character and the E120’s have the heaviest low end I’ve heard in a speaker and the D120F’s has very punchy lows. Not as huge as E120’s, but more punchy and direct
The JBL’s do have very intense, sharp treble and scooped, hollow mids, but it’s perfectly balanced out imo with the Redbacks being dark, laid back, but with their strong, a chewy low mids, which I’m a big fan of. You basically get a lot of everything but uppermids. If you want that, that’s where 20w Greenbacks really excel imo