Here, I'll quote my previous post.Yeah you're missing the fact that if motor force meant nothing, they wouldn't bother publishing it along with the other TS parameters for the subwoofer. You act like motor force cancels out and means nothing. lol of course it does that's why they publish the number for it in the first place.
Also here's another "coincidence" for all you 8 ohm-doubters: Why do people say high-impedance headphones give you more tight, controlled and accurate bass then? Clearly they don't know anything either.
Clearly there's no need for all those really expensive, high-impedance headphones, because there's no way there's a difference in audio quality at all. And all those people that say bass reproduction on those types of headphones is tighter, more accurate....nah, those guys are all snowflakes too.
YOU CANNOT CHANGE THE EFFECTIVE MOTOR FORCE OF A SPEAKER, unless you use only one of the two voice coils. THE MOTOR FORCE IS DETERMINED BY THE PHYSICAL CHARACTERISTICS OF THE MOTOR (the magnetic flux in the gap and the number of windings in the gap), YOU CANNOT CHANGE THEM WITHOUT REBUILDING THE SPEAKER TO DIFFERENT SPECS. Yes, I meant to scream.Motor force is "B" (magnetic flux in the gap) times "l" (length of windings in the gap), wiring it either in series or parallel WILL NOT change either of those parameters. However, only using 1 coil will change "l" (halves it). I think what you may have experienced is amplifier distortion when wired in parallel.
For what it's worth, we would normally compare motor force with "Bl/Re", which gives consistent and less confusing results.
As much as I hate to encourage you, your argument does hold water IF you're talking about a SINGLE voice coil speaker in either 2 or 8 ohm versions, the 8 ohm speaker will have more windings in the gap to achieve 8 ohms, therefore it will have more motor force, all else being equal.
YOUR ARGUMENT DOES NOT WORK WHEN DRIVING BOTH COILS OF A DVC SPEAKER IN EITHER SERIES OR PARALLEL. WHEN BOTH COILS ARE USED, MOTOR FORCE REMAINS THE SAME.