Acoustic suspension and infinite baffle are different. An acoustic suspension is a sealed enclosure that has an air volume less than the equivalent air volume compliance, the Vas, of the driver, usually less than half. An infinite baffle is also a sealed enclosure, but with an air volume greater than the Vas of the driver.
Open baffle, electrostatic, or panel/planar, are not infinite baffle because the back wave is not isolated.
The size of the enclosure is not necessarily an indicator. A driver with a Vas of 12L in a 16L enclosure is an infinite baffle. A driver with a Vas of 34L in the same enclosure is an acoustic suspension.
Open baffle, electrostatic, or panel/planar, are not infinite baffle because the back wave is not isolated.
The size of the enclosure is not necessarily an indicator. A driver with a Vas of 12L in a 16L enclosure is an infinite baffle. A driver with a Vas of 34L in the same enclosure is an acoustic suspension.