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<blockquote data-quote="ZO6killinsbf" data-source="post: 7960991" data-attributes="member: 619992">Ok, I followed the tutorial and I thought all was going good until I checked the transfer function magnitude in WinISD.(2) Infinity Reference 1262w&#039;sPower Handling, RMS&nbsp; &nbsp; 300 WFrequency Response&nbsp; &nbsp; 23Hz - 400HzNominal Impedance&nbsp; &nbsp; 2 or 8 OhmsSensitivity (2.83V @1m)&nbsp; &nbsp; 96 dBMounting Cutout Diameter (Metric, English)&nbsp; &nbsp; 11-1/8&quot; (282mm)Mounting Depth (Metric, English)&nbsp; &nbsp; 6-7/16&quot; (314mm)Vas (liters)&nbsp; &nbsp;&nbsp; 80.14Fs (Hz)&nbsp; &nbsp;&nbsp; 25Qts&nbsp; &nbsp;&nbsp; 0.46Xmax (millimeters)&nbsp; &nbsp;&nbsp; 13Single square/rectangular port box, 4 ft/3 tuned for 34 Hz3/4&quot; MDF 45 x 16 x 16.5Inner dimensions: 43.5 x 14.5 x 14Port dimensions: 14.5 x 4.13 x 30.51 = 1805.5 in/3When I run the numbers it comes up with a peak @ 168Hz!! What did I do wrong or skip? Bad math? Please help.Also, I&#039;d like to do the numbers for a center port if at all possible. Thanks</blockquote>

[QUOTE="ZO6killinsbf, post: 7960991, member: 619992"] Ok, I followed the tutorial and I thought all was going good until I checked the transfer function magnitude in WinISD. (2) Infinity Reference 1262w's Power Handling, RMS 300 W Frequency Response 23Hz - 400Hz Nominal Impedance 2 or 8 Ohms Sensitivity (2.83V @1m) 96 dB Mounting Cutout Diameter (Metric, English) 11-1/8" (282mm) Mounting Depth (Metric, English) 6-7/16" (314mm) Vas (liters) 80.14 Fs (Hz) 25 Qts 0.46 Xmax (millimeters) 13 Single square/rectangular port box, 4 ft/3 tuned for 34 Hz 3/4" MDF 45 x 16 x 16.5 Inner dimensions: 43.5 x 14.5 x 14 Port dimensions: 14.5 x 4.13 x 30.51 = 1805.5 in/3 When I run the numbers it comes up with a peak @ 168Hz!! What did I do wrong or skip? Bad math? Please help. Also, I'd like to do the numbers for a center port if at all possible. Thanks [/QUOTE]

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