500Hz is way too low for a tweeter to play so this will probably cause the tweeter to distort or blow up. Using a 2nd order filter would have the output down by 24dB which would be a signficant improvement. 3rd and 4th order filters are even better but expensive. Also analog crossovers change the phase response so try wiring your tweeter out of phase to see if it makes the sound better or worse and leave it the way it sounds better to you. Crossovers can also be made to have different types of response near the crossover point.
Butterworth filters have smooth but slow response.
Chebychev filters are quicker but have some overshoot. Details of these filters is beyond the scope of this page.