JL 18W6 Qtc=0.707
Driver parameters:
Qts=0.384
Fs=20.00 Hz
Vas=9.00 cu. ft
SPL=88.9 dB 1W 1m
max power=500 W RMS
Diameter=0.457 m
Xmax=0.013 m
Calculated parameters:
Vd=0.001436 m^3
n0=0.004898
Fc=36.82 Hz
F3=36.83 Hz
Vb=3.77 cu. ft
Par=1.609 acoustic W
Per=328.53 W
Thermal and Xmax limited SPL as a function of frequency:
Hz | SPL thermal | SPL xmax | Power xmax |
---|
2.0 | 65.29 dB | 63.46 dB | 328.5 W |
4.0 | 77.33 dB | 75.50 dB | 328.6 W |
6.0 | 84.37 dB | 82.55 dB | 328.8 W |
8.0 | 89.36 dB | 87.54 dB | 329.3 W |
10.0 | 93.22 dB | 91.42 dB | 330.3 W |
12.0 | 96.36 dB | 94.59 dB | 332.3 W |
14.0 | 99.00 dB | 97.27 dB | 335.4 W |
16.0 | 101.26 dB | 99.59 dB | 340.3 W |
18.0 | 103.21 dB | 101.63 dB | 347.3 W |
20.0 | 104.92 dB | 103.46 dB | 357.2 W |
22.0 | 106.42 dB | 105.12 dB | 370.5 W |
24.0 | 107.73 dB | 106.63 dB | 387.9 W |
26.0 | 108.88 dB | 108.02 dB | 410.3 W |
28.0 | 109.88 dB | 109.31 dB | 438.5 W |
30.0 | 110.74 dB | 110.51 dB | 473.4 W |
32.0 | 111.49 dB | 111.63 dB | 516.1 W |
34.0 | 112.13 dB | 112.68 dB | 567.5 W |
36.0 | 112.68 dB | 113.67 dB | 628.9 W |
38.0 | 113.14 dB | 114.61 dB | 701.3 W |
40.0 | 113.54 dB | 115.50 dB | 786.2 W |
42.0 | 113.87 dB | 116.35 dB | 884.8 W |
44.0 | 114.16 dB | 117.16 dB | 998.6 W |
46.0 | 114.39 dB | 117.93 dB | 1128.9 W |
48.0 | 114.60 dB | 118.67 dB | 1277.4 W |
50.0 | 114.77 dB | 119.38 dB | 1445.7 W |
52.0 | 114.91 dB | 120.06 dB | 1635.4 W |
54.0 | 115.04 dB | 120.72 dB | 1848.4 W |
56.0 | 115.14 dB | 121.35 dB | 2086.3 W |
58.0 | 115.23 dB | 121.96 dB | 2351.2 W |
60.0 | 115.31 dB | 122.55 dB | 2644.9 W |
62.0 | 115.38 dB | 123.12 dB | 2969.5 W |
64.0 | 115.44 dB | 123.67 dB | 3327.1 W |
66.0 | 115.49 dB | 124.20 dB | 3719.8 W |
68.0 | 115.53 dB | 124.72 dB | 4149.9 W |
70.0 | 115.57 dB | 125.22 dB | 4619.6 W |
72.0 | 115.60 dB | 125.71 dB | 5131.4 W |
74.0 | 115.63 dB | 126.19 dB | 5687.7 W |
76.0 | 115.66 dB | 126.65 dB | 6290.9 W |
78.0 | 115.68 dB | 127.10 dB | 6943.7 W |
80.0 | 115.70 dB | 127.54 dB | 7648.6 W |
82.0 | 115.72 dB | 127.97 dB | 8408.5 W |
84.0 | 115.73 dB | 128.39 dB | 9226.1 W |
86.0 | 115.75 dB | 128.80 dB | 10104.1 W |
88.0 | 115.76 dB | 129.20 dB | 11045.7 W |
90.0 | 115.77 dB | 129.59 dB | 12053.6 W |
92.0 | 115.78 dB | 129.97 dB | 13131.1 W |
94.0 | 115.79 dB | 130.35 dB | 14281.1 W |
96.0 | 115.80 dB | 130.71 dB | 15506.9 W |
98.0 | 115.80 dB | 131.07 dB | 16811.8 W |
100.0 | 115.81 dB | 131.42 dB | 18199.1 W |
With this alignment the JL 18W6 is barely Xmax limited up to 30 Hz and thermal
limited past that.
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