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Does a manufacturers specs mean GOLD ?
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<blockquote data-quote="generalGOTCHA" data-source="post: 2575040" data-attributes="member: 557157"><p>OK below are the T\S parameters for my Orion 10" P series subwoofers. They bang hard in the prefab their in right now, so its making me think about a custom box.</p><p></p><p>My main question is the fact that the ported enclosure specs show that the box needs to be tuned to 50Hz. Can it be tuned lower ?</p><p></p><p>Second , low Qtc has a higher box volume for a sealed application which I am considering for SQ, but there is a sealed SPL application as well. Which is better and why ? Does makeing the box bigger do anything more for the driver ?</p><p></p><p>Fs (free-air resonance, Hz) 38.52</p><p></p><p>Vas (equivalent compliance, cu. ft.) 0.56</p><p></p><p>Vas (equivalent compliance, liters) 15.75</p><p></p><p>Qms (Q, mechanical) 4.13</p><p></p><p>Qes (Q, electrical) 0.62</p><p></p><p>Qts (total driver Q) 0.54</p><p></p><p>Re (DC resistance, ohms) 6.85</p><p></p><p>Z (nominal impedance, ohms) 2.8</p><p></p><p>Le (inductance, mh) 2.96</p><p></p><p>Efficiency (1W @ 1M, dB) 83.5</p><p></p><p>Xmax (one way linear excursion, in.) 0.67</p><p></p><p>Xmax (one way linear excursion, mm) 17.19</p><p></p><p>Pe (continuous power handling, watts) 500</p><p></p><p>Peak power handling (music, watts) 1000</p><p></p><p>Mms (total moving mass, grams) 183.66</p><p></p><p>Cms (mechanical compliance, mm/N) 92.92</p><p></p><p>Bl (motor strength, Tesla-M) 22.18</p><p></p><p>Sd (effective radiating area, sq. m.) 0.035</p><p></p><p>Sd (effective radiating area, sq.in.) 53.78</p><p></p><p>Frequency range (Hz) 40-2.5k</p><p></p><p>Energy Bandwidth Product (EBP) 62.23</p><p></p><p>Model Number P10D4</p><p></p><p>Mounting hole diameter (inches) 9.45</p><p></p><p>Mounting depth (inches *) 5.25</p><p></p><p>Basket diameter (inches) 10.45</p><p></p><p>Model Number P10D4</p><p></p><p>Typical sealed enclosure (cu. ft.) 0.5</p><p></p><p>SPL sealed enclosure (cu. ft.) 0.45</p><p></p><p>Low Qtc sealed enclosure (cu. ft.) 0.65</p><p></p><p>Vented enclosure (cu. ft.) 0.95</p><p></p><p>Port tuning frequency (Hz) 50hz</p><p></p><p>Port diameter (inside, in.) 3</p><p></p><p>Equivalent square port (in.) 2.65x2.65</p><p></p><p>Port length (in.) 5.67</p></blockquote><p></p>
[QUOTE="generalGOTCHA, post: 2575040, member: 557157"] OK below are the T\S parameters for my Orion 10" P series subwoofers. They bang hard in the prefab their in right now, so its making me think about a custom box. My main question is the fact that the ported enclosure specs show that the box needs to be tuned to 50Hz. Can it be tuned lower ? Second , low Qtc has a higher box volume for a sealed application which I am considering for SQ, but there is a sealed SPL application as well. Which is better and why ? Does makeing the box bigger do anything more for the driver ? Fs (free-air resonance, Hz) 38.52 Vas (equivalent compliance, cu. ft.) 0.56 Vas (equivalent compliance, liters) 15.75 Qms (Q, mechanical) 4.13 Qes (Q, electrical) 0.62 Qts (total driver Q) 0.54 Re (DC resistance, ohms) 6.85 Z (nominal impedance, ohms) 2.8 Le (inductance, mh) 2.96 Efficiency (1W @ 1M, dB) 83.5 Xmax (one way linear excursion, in.) 0.67 Xmax (one way linear excursion, mm) 17.19 Pe (continuous power handling, watts) 500 Peak power handling (music, watts) 1000 Mms (total moving mass, grams) 183.66 Cms (mechanical compliance, mm/N) 92.92 Bl (motor strength, Tesla-M) 22.18 Sd (effective radiating area, sq. m.) 0.035 Sd (effective radiating area, sq.in.) 53.78 Frequency range (Hz) 40-2.5k Energy Bandwidth Product (EBP) 62.23 Model Number P10D4 Mounting hole diameter (inches) 9.45 Mounting depth (inches *) 5.25 Basket diameter (inches) 10.45 Model Number P10D4 Typical sealed enclosure (cu. ft.) 0.5 SPL sealed enclosure (cu. ft.) 0.45 Low Qtc sealed enclosure (cu. ft.) 0.65 Vented enclosure (cu. ft.) 0.95 Port tuning frequency (Hz) 50hz Port diameter (inside, in.) 3 Equivalent square port (in.) 2.65x2.65 Port length (in.) 5.67 [/QUOTE]
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