R6 is a no-no. Typically, a resistor here should not be this low of a value. If doing this, it can get hot and shunt a lot of current. I would try to not go below 40 ohms, and use at least a 25W part.
Wolf
Wolf
Did a quick Vituixcad model of the posted crossover and confirm your results (which are not good).
For illustration only (do not use as it has no box info or baffle step compensation and AMT is probably crossed too low) - I did a quick 2nd order plus series resistor to pad the AMT and series inductor to flatten the AMT rise. Looks reasonable as a starting point, However ......
Looks like these two drivers do not play well together - AMT needs to be crossed over above 2.5khz and the SP6 below 2.0khz. The SP6 info suggests a DT300 tweeter in a WG300 wave guide as a combo, have you looked into this ?
For illustration only (do not use as it has no box info or baffle step compensation and AMT is probably crossed too low) - I did a quick 2nd order plus series resistor to pad the AMT and series inductor to flatten the AMT rise. Looks reasonable as a starting point, However ......
Looks like these two drivers do not play well together - AMT needs to be crossed over above 2.5khz and the SP6 below 2.0khz. The SP6 info suggests a DT300 tweeter in a WG300 wave guide as a combo, have you looked into this ?