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<blockquote data-quote="1aespinoza" data-source="post: 8706742" data-attributes="member: 654802"><p>You are right, I am assuming 100%. I have zero knowledge of how to use much less apply tsps unless I have access to a box design program. However, I have never seen a sub with a 2.5&quot; voice coil have an rms of 1kw or more. The highest rms I have seen is 700 watts on a set of Oz Audio 15&quot; Matrix Elites. The specs sheet says they are able to be used in ib, sealed, and even ported. But they have none the less very soft parts. SAS basically banked on 2.5&quot; voice coils, and their efficiency on those tubes is phenomenal. But then again, it goes back to what you said, speaker and box design. So yeah, that is where I extrapolated that 2.5&quot; vcs have a higher efficiency than other sizes. And in regards to running subs over 100hz, I am guilty as charged. I had a universal volume with frequency (250hz max)knob running to a 275g4. It was pushing two Fosgate 12&quot; t0 subs and sounded great to my ear. I thought they were playing up to 250hz, but someone here told me it was probably less because of roll off. Now about that I am unversed so I take the word of those smarter than me at face value.</p></blockquote><p></p>

[QUOTE="1aespinoza, post: 8706742, member: 654802"] You are right, I am assuming 100%. I have zero knowledge of how to use much less apply tsps unless I have access to a box design program. However, I have never seen a sub with a 2.5" voice coil have an rms of 1kw or more. The highest rms I have seen is 700 watts on a set of Oz Audio 15" Matrix Elites. The specs sheet says they are able to be used in ib, sealed, and even ported. But they have none the less very soft parts. SAS basically banked on 2.5" voice coils, and their efficiency on those tubes is phenomenal. But then again, it goes back to what you said, speaker and box design. So yeah, that is where I extrapolated that 2.5" vcs have a higher efficiency than other sizes. And in regards to running subs over 100hz, I am guilty as charged. I had a universal volume with frequency (250hz max)knob running to a 275g4. It was pushing two Fosgate 12" t0 subs and sounded great to my ear. I thought they were playing up to 250hz, but someone here told me it was probably less because of roll off. Now about that I am unversed so I take the word of those smarter than me at face value. [/QUOTE]

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