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Message: <blockquote data-quote="shauncox26" data-source="post: 8164626" data-attributes="member: 654960"><p>Example i have 2 obsidian audio 12s i had them in a ported box somewhere around 4.5ft^3 tuned to 30hz and tthe lows were amazing but i lacked upper bass power, but everything below 35 tell my subsonic kicked in was beast. Now they were on a rf t.1500bdcp at 1 ohm roughly 1700. Now i have one in a 2:1 4th tuned to 40Hz. I have tremendous highs and a fairly flat response down to 30Hz and a slow roll off into the twentys. With the 4th i have around the same output as the two in the ported on a 1/4 the power. I used a 40Hz 0db test tone and clamped a mild 456watts rms rising from 1.9 to 4.9 ohm. It is all in preference but im hooked on the flat response of a good 4th. They can be efficient beasts, but they are hard to build, and tune. Though if done right u won't believe the difference.</p></blockquote><p></p>

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