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<blockquote data-quote="Moble Enclosurs" data-source="post: 7617030" data-attributes="member: 634917">Think of this......you are in a room. Sitting in the center at the front of the room. Now, on the other side is a sub box. The port faces you as well as the driver on the same baffle. Now, if you were to extend that port closer to you and connect it to the walls and floor and curving at an angle relevant to coupling, then you will here much more coming from the port because now it is part of the room and the room is an extension of the port. So minimal acoustical losses are present from before. You are essentially now sitting in the port because the port is coupled with the room by extending itself into the rooms boundaries.So efficiency is higher because you did not have to turn anything up but the sound increased due to coupling. And since the port is larger, the boundaries act much like resonances in a room where the larger the room, the lower the resonances that are excited, or heard.Maybe that will help a bit also.</blockquote>

[QUOTE="Moble Enclosurs, post: 7617030, member: 634917"] Think of this......you are in a room. Sitting in the center at the front of the room. Now, on the other side is a sub box. The port faces you as well as the driver on the same baffle. Now, if you were to extend that port closer to you and connect it to the walls and floor and curving at an angle relevant to coupling, then you will here much more coming from the port because now it is part of the room and the room is an extension of the port. So minimal acoustical losses are present from before. You are essentially now sitting in the port because the port is coupled with the room by extending itself into the rooms boundaries. So efficiency is higher because you did not have to turn anything up but the sound increased due to coupling. And since the port is larger, the boundaries act much like resonances in a room where the larger the room, the lower the resonances that are excited, or heard. Maybe that will help a bit also. [/QUOTE]

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