- Yes,,, typically any MTM uses dulpicate woofers. So, one would never, ever think of allowing duplicate woofers to run with different polarities .
- The slope is really a secondary issue / though one type may produce more lobing than others. Experimentation , is still the key here .
- The fact that your UltraDrive machine choose different polarities for the two woofer types just means it detected something it didn't like and attempted to fix it. It likely detected some "lobing" of some sort. Microphone position can also greatly effect this. Lobing is a fact of life with MTM systems. There is a stable listening window in which the imaging is unbeatable / outside that window , it starts to break down . The machines' solution to lobing was worse than the "problem" it detected. Remember "automatic whatevers" are just some electronic manisfestation of the programmers own crossover philosophy ( with his "logic" burned into the chip ) . You can bet ( in this case ) the programmer wasn't thinking about MTM crossover design.
- Back in the second post of your MTM thread , I stated you were going to have to try out different slopes to find the best fit between the "M(s)" & the "T" section . There is no road-map for this stuff / just instincts and intuition.
- What slope are you now using on the 2441 ?
- And yes, I would choose a filter type that gives the best transient or step response / since these systems actually let one hear these choices ( when properly implemented ) .
- As Scott has suggested ; just disarm that silly auto phase flip feature / it's useless for MTM work ( keep the auto time-align engaged, assuming they are separate ) .
<>