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<blockquote data-quote="Art Welter" data-source="post: 84207" data-attributes="member: 52">Re: 5K$&nbsp; anyone?They seem to set their own&nbsp; computational and measurement rules :^).Response 15 Hz 250Hz: at the downward slope of the graph 25 Hz is about 10 dB down from 50 Hz, and 15 Hz is 30+ dB down, the port would be useful as a fan driven with more than a few watts that low.A 2 x 18&quot; front load bin could measure as the chart shows&nbsp; if measured directly in front of the cabinet center, at around 8 inches (20 centimeters), then to the side at 8&quot;, then to the rear at 8&quot;= approximately doubling the distance from the source each time&nbsp; would result in a 12 dB reduction as pictured.Do the same at a few meters and the cabinet would measure omni other than in the HF.142 dB peak figures OK with no power compression from 97 dB sensitivity driven with 4949 peak watts (what happens at 5000?), so two cabinets on paper do 148 dB, four cabinets, 154 dB, but hey presto- 3 units stacked per side magically produce 163 dB!Art</blockquote>

[QUOTE="Art Welter, post: 84207, member: 52"] Re: 5K$ anyone? They seem to set their own computational and measurement rules :^). Response 15 Hz 250Hz: at the downward slope of the graph 25 Hz is about 10 dB down from 50 Hz, and 15 Hz is 30+ dB down, the port would be useful as a fan driven with more than a few watts that low. A 2 x 18" front load bin could measure as the chart shows if measured directly in front of the cabinet center, at around 8 inches (20 centimeters), then to the side at 8", then to the rear at 8"= approximately doubling the distance from the source each time would result in a 12 dB reduction as pictured. Do the same at a few meters and the cabinet would measure omni other than in the HF. 142 dB peak figures OK with no power compression from 97 dB sensitivity driven with 4949 peak watts (what happens at 5000?), so two cabinets on paper do 148 dB, four cabinets, 154 dB, but hey presto- 3 units stacked per side magically produce 163 dB! Art [/QUOTE]

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