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RE: All of the popular dipole woofers systems I've seen

Posted by emailtim (A) on May 23, 2021 at 09:35:55

In Reply to: All of the popular dipole woofers systems I've seen posted by E-Stat on May 23, 2021 at 08:48:20:

Alternating the drivers in the H-Frames (as sometimes pictured in the GR-Research subs) distributes the magnet weight within the H-Frame cabinet provided even number of drivers are used. He has many triples out there.

It supposedly averages out non-linearity of the driver's back-2-forward and forward-2-back movements (assuming even number of drivers), but I have not able to measure or hear any discernible differences between the 2 mounting options. The force on the cabinet is still the same (both fire towards the front at the same time and fire at the back at the same time), but the weight distribution is different.

The Linkwitz Phoenix cabinet design both centers the weight in the cabinet, averages out the non-linearity driver movement and also throws in force cancellation making the cabinet as still as a tombstone (provided it is sufficiently strong for the task). It does exhibit different front and back waves due to asymmetrical chase openings which can interact with the room differently than the H-Frame design. I have tried the Phoenix in a 2-driver configuration, but not a 4-driver configuration which has the same number/size of front and back chases.

The W frame is somewhere inbetween the 2.

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2022/03/30 Historical Records CENSORED

Edits: 05/23/21

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