bennybbbx
Addicted to Fun and Learning
Perhaps another difference between Abacus and ESI plays a role here. Mid-woofer in Abacus is compensated for the electromotive force (EMF)? Those -6 at 35Hz are perhaps only in ultranearfield? Also, Abacus is engineered from the ground up to be exclusively closed speaker that reaches deep down with very limited SPL.
I do not have any measuring equipment, but I hear sinewaves unmistakenly all the way down to 40Hz (I listen to in near-field, not ultranearfield).
I can hear with closed port 30 hz louder as with open port on the ESI. (minimum i can hear is 28 hz)I think with closed port sound more cleaner the 30 hz. the 40 hz sound also cleaner as with open port, it sound near same loud.
Intresting what happen with the D3V. if the 2 passive systems give even more bass gain as openport and what happen with distortion. between closed port and open port changes the room modes alot. maybe with the 2 passive speakers on side it give better sound
kick drum is between 50-70 hz. on this the open port sound most louder as the closed port. I verify with sine tone the arc 4 results on closed port. right speaker is level -18 db at 55 hz. but left speaker is -5 db(happen due to correction) can see in DAW Level meter. when reduce the lots correction on left speaker 6 db less at 50-70 hz then i can go loud enough for me and no risc for ear damage( 75 db max on music with DBa) with closed port. seem i can use the esi with closed port
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