Robert North Posted April 2, 2022 Report Share Posted April 2, 2022 Built an enclosure for an American Bass 12 xmax sub, dual 2ohm. Would it sound better aiming the sub down with a 4" aero port facing back or the sub facing back? The console is in a F250. Sub will fire down, while port is aimed to the rear Link to comment Share on other sites More sharing options...
Joe X Posted April 2, 2022 Report Share Posted April 2, 2022 What stands out is that a single 4" port is insufficient port area for that sub, you will experience loss of output and probably port noise at high output levels. Link to comment Share on other sites More sharing options...
Robert North Posted April 3, 2022 Author Report Share Posted April 3, 2022 10 hours ago, Joe X said: What stands out is that a single 4" port is insufficient port area for that sub, you will experience loss of output and probably port noise at high output levels. Thanks for responding. What would you have done? I have another 4" that can be added. I thoight 1 4" was probably insufficient. Link to comment Share on other sites More sharing options...
Joe X Posted April 3, 2022 Report Share Posted April 3, 2022 Port area depends mainly on box size and power, assuming rated power of 3500WRMS and a box 2 cubic feet net you would need some 40 square inches of port area (more than 2 4" ports). Also sub clearance to the floor seems rather low. So try to mod this box to improve it and to learn what works best for you and if you need a new one you will know what needs to be done. Link to comment Share on other sites More sharing options...
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