Beautiful review and demonstration. I have the minuet SE tiny bookshelf is truly amazing. The natural tone sound stage and imaging is off the charts and clarity. I am definitely a fanboy.❤😊
Bravo on reducing eddy current distortion. Balanced drivers (with two cones) are often used in subwoofers to cancel forces induced into cabinet walls. I believe a balanced driver reduces even order distortion only, odd harmonics remain unchanged.
Hi, two different types of "balanced" being referred to. The balanced subwoofers you're talking about is often called a "force canceling" configuration. The drivers are mounted opposite to one another so their forces are equal and opposite -- and then the resonances from them cancel out instead of traveling into the cabinet walls. It's a mechanical cancellation two drivers mounted the way they are proved. The balanced configuration Lars Worre is talking about has to do with the motor system in a single driver -- essentially, there are two voice coils, two magnets in there, equal and opposite to one another, once again canceling their non-linearities.
In any balanced system only even order non-linearities are cancelled. In a correctly designed balanced subwoofer there is both mechanical force cancelllation & electrical even order distortion cancellation. The woofer Lars showed has a single cone (because it's a wideband woofer and not a subwoofer) so is not 'perfectly' balanced but there is still some cancellation.
@@trevorbartram5473 Unless I'm misinterpreting what yoi're saying, I don't think you're following what I'm referring to as "balanced" in this instance. Balanced, in this case, is the JBL-patented system of having dual voice coils and dual magnets in the motor system. This isn't two different drivers -- it's a single driver.
At about 15:10 - 15:20 it is mentioned that current drive doesn't have control over the driver because the damping factor isn't there, but current drive has full control of the driver because it controls the current, and there is no need to be concerned about the damping factor because that term is only relevant in voltage drive.
Good question and perhaps some day we'll be able to answer that -- we've never reviewed a Børresen loudspeaker. However, we've reviewed several DALI and they've all been excellent to outstanding.
