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Down to Three
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<blockquote data-quote="VereChronicus" data-source="post: 1481206" data-attributes="member: 565864"><p>Those stats won't really tell you anything about its ability to punch you in the chest. Xmax just tells you how much the voice coil overhangs the gap height on both sides. Nothing more than a physical measurement of two parts in the sub. The Vas tells you how many liters of air it takes to equal the subwoofers suspension springiness. The Fs tells you what frequency the moving parts naturally resonate at. The lower the Fs, normally the higher the moving parts weigh in relation to the stiffness of the suspension that supports and aligns it. Qts is a product of multiple systems functions within the speaker as a whole, it gives you a round-a-bout idea of what kind of enclosure the sub was made for or accidentally came to be in many cases (just not in these). For very low frequency extension in a small sealed box like yours, which will come closer to 0.5 cubic foot after subwoofer displacement, the Type X has the stats that better suit low frequency extension, BUT....as in almost every case, the sensitivity is very low, meaning that to compare the Type X to the JL W6v2 in output, you will have to have double the amplifier power to get the same SPL as the JL. With those subs, when you have a 3dB+ sensitivity variance, unless they are suspension limited, the more sensitive sub will utlimately get louder in an SQ situation since you won't be "SQing" anything with a sub being powered over 500w. The sub output level would be well over that of an SQ listening level. Those subs are all pretty equal and will perform very much alike in that small sealed enclosure you have. I would recommend that you find the SPL rating or sensitivity rating of the Boston sub and choose your sub out of the three by that number. The higher the sensitivity of these three drivers, the more output you'll get in the end from your limited amplifier power. You want that amp to work as little as possible to get maximum results and the highest sensitivity driver will do just that. Have a great time with whatever you choose.</p></blockquote><p></p>
[QUOTE="VereChronicus, post: 1481206, member: 565864"] Those stats won't really tell you anything about its ability to punch you in the chest. Xmax just tells you how much the voice coil overhangs the gap height on both sides. Nothing more than a physical measurement of two parts in the sub. The Vas tells you how many liters of air it takes to equal the subwoofers suspension springiness. The Fs tells you what frequency the moving parts naturally resonate at. The lower the Fs, normally the higher the moving parts weigh in relation to the stiffness of the suspension that supports and aligns it. Qts is a product of multiple systems functions within the speaker as a whole, it gives you a round-a-bout idea of what kind of enclosure the sub was made for or accidentally came to be in many cases (just not in these). For very low frequency extension in a small sealed box like yours, which will come closer to 0.5 cubic foot after subwoofer displacement, the Type X has the stats that better suit low frequency extension, BUT....as in almost every case, the sensitivity is very low, meaning that to compare the Type X to the JL W6v2 in output, you will have to have double the amplifier power to get the same SPL as the JL. With those subs, when you have a 3dB+ sensitivity variance, unless they are suspension limited, the more sensitive sub will utlimately get louder in an SQ situation since you won't be "SQing" anything with a sub being powered over 500w. The sub output level would be well over that of an SQ listening level. Those subs are all pretty equal and will perform very much alike in that small sealed enclosure you have. I would recommend that you find the SPL rating or sensitivity rating of the Boston sub and choose your sub out of the three by that number. The higher the sensitivity of these three drivers, the more output you'll get in the end from your limited amplifier power. You want that amp to work as little as possible to get maximum results and the highest sensitivity driver will do just that. Have a great time with whatever you choose. [/QUOTE]
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