I would like to keep the crossover as simple as possible, and to that end I wish to use a parallel resistor on the tweeter to flatten the impedance with which the crossover reacts. I am having difficulty predicting what, if any, effect the extra resistor in the series crossover will have on the response.

I know the resistor will dissipate some amplifier power and that the power rating of the resistor must be high enough to do so safely. I know that I must cross the tweeter high enough above resonance to keep the power applied to a low level and to come as close as possible to an acoustical first-order response. My question is: will a parallel resistor on the tweeter alter the characteristics of a first-order series crossover?

If anyone has specific knowledge on the subject, I would appreciate your reply. If you have experience with series crossovers, I would be interested in hearing about that also. Thanks to all.