| Theil Small Parameters |
| These T/S parameters were compiled from various individuals, to give an idea of general T/S parameters. If you have run measurements and would like to send them please email them to me and I will post them here as well. (tadgesualdo@hotmail.com) |
| 12trxb Re = 6.7 Sd = 535 cm2 Bl = 8.76 Vas = 167 liters Cms = 411 uM/N Fs = 45 hertz Qms = 5.9 Qes = 0.75 Qts = 0.665 Pe = 65 watts Xmax = 3.3mm 1w SPL = 96.22 db* Believe it or not optimum volume is around 450 liters. But you could try 100 - 150 liters as a compromise. This is normal situation considering the Q value. |
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| SP12B The measurements I have are as follows driver #1 driver #2 Fs.................................... 40.52.................44.49 Vas Cubic feet..............6.27....................6.98 Vas Litres....................177.73..............169.55 Qms................................5.947.................4.950 Qes.................................0.696.................0.709 Qts..................................0.623.................0.620 Re....................................9.41.....................10.57 Le mH............................1.194...................1.396 Mm grams....................32.90.................28.61 Eff 1w/1m....................94.13.................95.06 . You can plug these numbers into your favorite loudspeaker modeling program to determine what you want to do for box size. I have mine mounted in 5.5 cubic foot sealed cabinets. The f3 is 45Hz. |
| LS12 Fs: 58.35 Re:6.746 Qms: 7.722 Qes: 2.217 Qts: 1.722 Cms: 0.342 mm/N Mms: 21.74g Sd: 557 sq. cm Le: 0.2 mH BL: 4.925 N/A Vas 151 liters 1w SPL: 95dbs Fs of three different LS12's Fs A: 58 Fs B: 47 Fs C: 60 |
| EV 30W Re = 4 Fs = 16 Vas = 5.9472 Qes = 0.3 Qms = 2.61 Qts = 0.2691 Sd = .3626 Pe = 60 watts Xmax = 0.0038 Le = 1.28 Mms = .30624 BL = 20.261 1w SPL = 101.09 |
| MC12A Re = 7.5 Fs = 50 Vas = .1444 Qes = 1.2 Qms = 2.2 Qts = .7765 Sd = .0484 Pe = 20 watts Xmax = .0015 Le = .5 Mms = .02301 BL = 6.722 1w SPL = 93.767 |
| MC8 Re = 6.5 Fs = 75 Vas = .0312 Qes = .87 Qms = 1.95 Qts = .6016 Sd = .0194 Pe = 12 Xmax = .0015 Le = .3 Mms = .0076 BL = 5.174 1w SPL = 93.792 |
| SP8C Re = 5.5 Fs = 55 Vas = .0283 Qes = .49 Qms = 5.2 Qts = .4478 Sd = .0194 Pe = 25 watts Xmax = .003 Le = .4 Mms = .01559 BL = 7.776 1w SPL = 91.821 |
| SP15 Re = 5.5 Fs = 40 Vas = .2804 Qes = .49 Qms = 5 Qts = .4463 Sd = .0806 Pe = 50 watts Xmax = .0051 Le = .3 Mms = .05135 BL = 12.036 1w SPL = 97.6 |